32-bit ARM CortexTM-M0 - NuMicro® Family

M0A21 Series

The series of NuMicro Family 32-bit microcontrollers based on the ARM Cortex-M0 core, running up to 48 MHz within -40 – +125 °C and equipped with rich peripherals and interfaces, including LIN interface.
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 *
M0A21EB1AC
 (3479 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 2 internal RC oscillators
  • PLL controller sourced from 2 high speed oscillators: crystal or RC
  • 5-channel PDMA
  • up to 26 I/Os
  • 4 x 32-bit timers
  • Watchdog
  • 32 interrupts
  • interfaces: 2 x UART, 2 x USCI (configured as UART, SPI or I2C), 2 x LIN
  • supports CRC-CCITT, CRC-8, CRC-16 and CRC-32 error-detecting codes
  • 6-channel 16-bit PWM
  • 17-channel 12-bit ADC
  • 2-channel 5-bit DAC
  • 2 analog comparators
  • LDO regulator
  • LVR (Low Voltage Reset)
  • 2-level BOD
 16 KB 4 KB configurable 2 KB ISP
IAP		 Ext. crystal:
4 - 24 MHz
32.768 kHz

Int. RC:
48 MHz
38.4 kHz		 2.4 – 5.5 -40 – +125 TSSOP-28
(4.4x9.7 mm)		 P
M0A21EC1AC
 (3479 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 2 internal RC oscillators
  • PLL controller sourced from 2 high speed oscillators: crystal or RC
  • 5-channel PDMA
  • up to 26 I/Os
  • 4 x 32-bit timers
  • Watchdog
  • 32 interrupts
  • interfaces: 2 x UART, 2 x USCI (configured as UART, SPI or I2C), 2 x LIN
  • supports CRC-CCITT, CRC-8, CRC-16 and CRC-32 error-detecting codes
  • 6-channel 16-bit PWM
  • 17-channel 12-bit ADC
  • 2-channel 5-bit DAC
  • 2 analog comparators
  • LDO regulator
  • LVR (Low Voltage Reset)
  • 2-level BOD
 32 KB 4 KB configurable 2 KB ISP
IAP		 Ext. crystal:
4 - 24 MHz
32.768 kHz

Int. RC:
48 MHz
38.4 kHz		 2.4 – 5.5 -40 – +125 TSSOP-28
(4.4x9.7 mm)		 P
M0A21OB1AC
 (3479 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 2 internal RC oscillators
  • PLL controller sourced from 2 high speed oscillators: crystal or RC
  • 5-channel PDMA
  • up to 18 I/Os
  • 4 x 32-bit timers
  • Watchdog
  • 32 interrupts
  • interfaces: 2 x UART, 2 x USCI (configured as UART, SPI or I2C), 2 x LIN
  • supports CRC-CCITT, CRC-8, CRC-16 and CRC-32 error-detecting codes
  • 6-channel 16-bit PWM
  • 17-channel 12-bit ADC
  • 2-channel 5-bit DAC
  • 2 analog comparators
  • LDO regulator
  • LVR (Low Voltage Reset)
  • 2-level BOD
 16 KB 4 KB configurable 2 KB ISP
IAP		 Ext. crystal:
4 - 24 MHz
32.768 kHz

Int. RC:
48 MHz
38.4 kHz		 2.4 – 5.5 -40 – +125 SSOP-20
(5.3x7.2 mm)		 P
M0A21OC1AC
 (3479 kB)
  • operating frequency up to 48 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 2 internal RC oscillators
  • PLL controller sourced from 2 high speed oscillators: crystal or RC
  • 5-channel PDMA
  • up to 18 I/Os
  • 4 x 32-bit timers
  • Watchdog
  • 32 interrupts
  • interfaces: 2 x UART, 2 x USCI (configured as UART, SPI or I2C), 2 x LIN
  • supports CRC-CCITT, CRC-8, CRC-16 and CRC-32 error-detecting codes
  • 6-channel 16-bit PWM
  • 17-channel 12-bit ADC
  • 2-channel 5-bit DAC
  • 2 analog comparators
  • LDO regulator
  • LVR (Low Voltage Reset)
  • 2-level BOD
 32 KB 4 KB configurable 2 KB ISP
IAP		 Ext. crystal:
4 - 24 MHz
32.768 kHz

Int. RC:
48 MHz
38.4 kHz		 2.4 – 5.5 -40 – +125 SSOP-20
(5.3x7.2 mm)		 P