M253 Series

The series of NuMicro Family 32-bit microcontrollers based on the ARM Cortex-M23 core for 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, 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 *
M253LD3AE (2529 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 up to 37 I/O pins 4 x 32-bit timers RTC Watchdog interfaces: 5 x UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x CAN VAI (Voltage Adjustable Interface) 5-channel PDMA USB Device compliant with USB 2.0 Full-Speed specification 6-channel PWM 12-channel 12-bit ADCs 2 x analog comparator 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	64 KB	16 KB	configurable	4 KB	ISP / ICP / IAP	Ext. crystal: 4 - 32 MHz 32.768 kHz Int. RC: 48 MHz 4.032 MHz 38.4 kHz	1.75 – 5.5	-40 – +105	LQFP-48	P
M253LE3AE (2529 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 up to 37 I/O pins 4 x 32-bit timers RTC Watchdog interfaces: 5 x UART, 3 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x CAN 5-channel PDMA USB Device compliant with USB 2.0 Full-Speed specification 6-channel PWM 12-channel 12-bit ADCs 2 x analog comparator 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	128 KB	16 KB	configurable	4 KB	ISP / ICP / IAP	Ext. crystal: 4 - 32 MHz 32.768 kHz Int. RC: 48 MHz 4.032 MHz 38.4 kHz	1.75 – 5.5	-40 – +105	LQFP-48	P
M253ZE3AE (2529 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 up to 22 I/O pins 4 x 32-bit timers RTC Watchdog interfaces: 5 x UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x SPI / I2S (configured as SPI or I2S), 2 x I2C, 1 x CAN VAI (Voltage Adjustable Interface) 5-channel PDMA USB Device compliant with USB 2.0 Full-Speed specification 6-channel PWM 10-channel 12-bit ADCs 2 x analog comparator 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	128 KB	16 KB	configurable	4 KB	ISP / ICP / IAP	Ext. crystal: 4 - 32 MHz 32.768 kHz Int. RC: 48 MHz 4.032 MHz 38.4 kHz	1.75 – 5.5	-40 – +105	QFN-33	P