32-bit ARM CortexTM-M23 - NuMicro® Family

M251/M252 Series

The series of NuMicro Family 32-bit microcontrollers based on the ARM Cortex-M23 core using ARMv8-M architecture. They provide secure memory areas to secure critical program codes. They are equipped with rich peripherals and communication interfaces, including UART, SPI, I2C, I2S, CAN, LIN, SD, SC and USB. These chips are mainly designed to realize robust IoT security applications.
All Ics are RoHS compliant.

* Status: P - mass production, S - samples, UD - under development, N - not recommended for new design.

Chip Description Application Flash  SRAM  Data Flash Loader Flash Programm.
methods		 Clock
  frequency  		 Supply
  voltage  
[V]		 Operating
temperature
[°C]		    Package    Status *
M251EC2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 19 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 2 x UART, 1 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 11-channel PWM
  • 9-channel 12-bit ADCs
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 32 KB 8 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 TSSOP-28 P
M251FC2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 15 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 2 x UART, 1 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 9-channel PWM
  • 7-channel 12-bit ADCs
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management:Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 32 KB 8 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 TSSOP-20 P
M251ZC2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 26 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 2 x UART, 1 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 12-channel PWM
  • 10-channel 12-bit ADCs
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 32 KB 8 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 QFN-33 P
M251LC2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 41 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 24-channel PWM
  • 12-channel 12-bit ADCs
  • 2 x analog comparator
  • 4 x PSIO (Programmable Serial I/O) pins
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 32 KB 12 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-48 P
M251LD2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 41 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 24-channel PWM
  • 12-channel 12-bit ADCs
  • 2 x analog comparator
  • 4 x PSIO (Programmable Serial I/O) pins
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 64 KB 12 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-48 P
M251SC2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 54 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 24-channel PWM
  • 16-channel 12-bit ADCs
  • 2 x analog comparator
  • 4 x PSIO (Programmable Serial I/O) pins
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 32 KB 12 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-64 P
M251SD2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 54 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 24-channel PWM
  • 16-channel 12-bit ADCs
  • 2 x analog comparator
  • 4 x PSIO (Programmable Serial I/O) pins
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 64 KB 12 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-64 P
M251ZD2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 26 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 20-channel PWM
  • 10-channel 12-bit ADCs
  • 2 x analog comparator
  • 4 x PSIO (Programmable Serial I/O) pins
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 64 KB 12 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 QFN-33 P
M251KE3AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 85 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3), 16/8-bits EBI
  • VAI (Voltage Adjustable Interface)
  • 8-channel PDMA
  • 24-channel PWM
  • 16-channel 12-bit ADCs
  • 2 x analog comparator
  • 8 x PSIO (Programmable Serial I/O) pins
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 128 KB 16 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-128 P
M251LE3AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 41 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3), 16/8-bits EBI
  • VAI (Voltage Adjustable Interface)
  • 8-channel PDMA
  • 24-channel PWM
  • 12-channel 12-bit ADCs
  • 2 x analog comparator
  • 8 x PSIO (Programmable Serial I/O) pins
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 128 KB 16 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-48 P
M251SE3AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 53 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3), 16/8-bits EBI
  • VAI (Voltage Adjustable Interface)
  • 8-channel PDMA
  • 24-channel PWM
  • 16-channel 12-bit ADCs
  • 2 x analog comparator
  • 8 x PSIO (Programmable Serial I/O) pins
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 128 KB 16 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-64 P
M251KG6AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 85 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3), 16/8-bits EBI
  • VAI (Voltage Adjustable Interface)
  • 8-channel PDMA
  • 24-channel PWM
  • 16-channel 12-bit ADCs
  • 1 x 12-bit DAC
  • 2 x analog comparator
  • 1 x operational amplifier
  • 8 x PSIO (Programmable Serial I/O) pins
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 256 KB 32 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-128 P
M251LG6AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 41 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3), 16/8-bits EBI
  • VAI (Voltage Adjustable Interface)
  • 8-channel PDMA
  • 24-channel PWM
  • 12-channel 12-bit ADCs
  • 1 x 12-bit DAC
  • 2 x analog comparator
  • 1 x operational amplifier
  • 8 x PSIO (Programmable Serial I/O) pins
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 256 KB 32 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-48 P
M251SG6AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 53 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3), 16/8-bits EBI
  • VAI (Voltage Adjustable Interface)
  • 8-channel PDMA
  • 24-channel PWM
  • 16-channel 12-bit ADCs
  • 1 x 12-bit DAC
  • 2 x analog comparator
  • 1 x operational amplifier
  • 8 x PSIO (Programmable Serial I/O) pins
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 256 KB 32 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-64 P
M252EC2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 19 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 2 x UART, 1 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 11-channel PWM
  • 9-channel 12-bit ADCs
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 32 KB 8 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 TSSOP-28 P
M252FC2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 15 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 2 x UART, 1 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 7-channel PWM
  • 3-channel 12-bit ADCs
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management:Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 32 KB 8 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 TSSOP-20 P
M252ZC2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 26 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 2 x UART, 1 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 12-channel PWM
  • 10-channel 12-bit ADCs
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 32 KB 8 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 QFN-33 P
M252LC2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 41 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 24-channel PWM
  • 12-channel 12-bit ADCs
  • 2 x analog comparator
  • 4 x PSIO (Programmable Serial I/O) pins
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 32 KB 12 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-48 P
M252LD2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 41 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 24-channel PWM
  • 12-channel 12-bit ADCs
  • 2 x analog comparator
  • 4 x PSIO (Programmable Serial I/O) pins
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 64 KB 12 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-48 P
M252SC2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 54 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 24-channel PWM
  • 16-channel 12-bit ADCs
  • 2 x analog comparator
  • 4 x PSIO (Programmable Serial I/O) pins
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 32 KB 12 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-64 P
M252SD2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 54 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 24-channel PWM
  • 16-channel 12-bit ADCs
  • 2 x analog comparator
  • 4 x PSIO (Programmable Serial I/O) pins
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 64 KB 12 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-64 P
M252ZD2AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 26 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3)
  • VAI (Voltage Adjustable Interface)
  • 5-channel PDMA
  • 20-channel PWM
  • 10-channel 12-bit ADCs
  • 2 x analog comparator
  • 4 x PSIO (Programmable Serial I/O) pins
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 64 KB 12 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 QFN-33 P
M252KE3AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 85 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3), 16/8-bits EBI
  • VAI (Voltage Adjustable Interface)
  • 8-channel PDMA
  • 24-channel PWM
  • 16-channel 12-bit ADCs
  • 2 x analog comparator
  • 8 x PSIO (Programmable Serial I/O) pins
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 128 KB 16 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-128 P
M252LE3AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 41 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3), 16/8-bits EBI
  • VAI (Voltage Adjustable Interface)
  • 8-channel PDMA
  • 24-channel PWM
  • 12-channel 12-bit ADCs
  • 2 x analog comparator
  • 8 x PSIO (Programmable Serial I/O) pins
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 128 KB 16 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-48 P
M252SE3AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 53 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3), 16/8-bits EBI
  • VAI (Voltage Adjustable Interface)
  • 8-channel PDMA
  • 24-channel PWM
  • 16-channel 12-bit ADCs
  • 2 x analog comparator
  • 8 x PSIO (Programmable Serial I/O) pins
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 128 KB 16 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-64 P
M252KG6AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 85 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3), 16/8-bits EBI
  • VAI (Voltage Adjustable Interface)
  • 8-channel PDMA
  • 24-channel PWM
  • 16-channel 12-bit ADCs
  • 1 x 12-bit DAC
  • 2 x analog comparator
  • 1 x operational amplifier
  • 8 x PSIO (Programmable Serial I/O) pins
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 256 KB 32 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-128 P
M252LG6AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 41 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3), 16/8-bits EBI
  • VAI (Voltage Adjustable Interface)
  • 8-channel PDMA
  • 24-channel PWM
  • 12-channel 12-bit ADCs
  • 1 x 12-bit DAC
  • 2 x analog comparator
  • 1 x operational amplifier
  • 8 x PSIO (Programmable Serial I/O) pins
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 256 KB 32 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-48 P
M252SG6AE
 (4111 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 3 internal RC oscillators
  • 32-bit hardware multiplier / divider
  • 1-region eXecute-Only-Memory ( XOM ) to secure critical program codes
  • up to 53 I/O pins
  • 4 x 32-bit timers
  • RTC
  • Watchdog
  • interfaces: 3 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x SC ( ISO-7816-3), 16/8-bits EBI
  • VAI (Voltage Adjustable Interface)
  • 8-channel PDMA
  • 24-channel PWM
  • 16-channel 12-bit ADCs
  • 1 x 12-bit DAC
  • 2 x analog comparator
  • 1 x operational amplifier
  • 8 x PSIO (Programmable Serial I/O) pins
  • 1 x USB 2.0 FS Device with on-chip PHY (crystal-less design)
  • 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID)
  • LDO regulator
  • power management: Power-on Reset (POR), Brown-out Reset (BOR) and Low Voltage Reset (LVR)
  • power saving modes: Idle, Power-down, and Deep Power-down
 256 KB 32 KB   4 KB ISP / ICP / IAP Ext. crystal:
4 - 32 MHz
32.768 kHz

Int. RC:
48 MHz
4.032 MHz
38.4 kHz		 1.8 – 5.5 -40 – +105 LQFP-64 P