[어보브반도체(주)]

The A31L22x series is an ultra-low power microcontroller based on the high-performance ARM Cortex-M0+ core. It has a Flash memory of up to 32KB and an SRAM of 4KB. Operation voltage of the device is from 1.71V to 3.6V. It provides a highly flexible and cost-effective solution for manyembedded control applications.This device offers 16-bit timers, Real timer and calendar, 12-bit ADC, Comparator, CRC generator, UART, USART, LPUART, I2C, SPI, etc. The A31L21x series also has a POR, LVR, LVI, and an internal RC oscillator.The A31L21x series supports SLEEP mode and DEEP SLEEP mode to reduce power consumption, and these power saving modes allow the design of low power applications.

Product Spec

Availability	Mass Production
Core	CM0+
Op. Freq. (MHz)	32
Flash (Kbytes)	32
Data Flash (Kbytes)
RAM (Kbytes)	4
Pin Count	20
Max I/O Pins	17
Timer (16-bit)	5
Timer (32-bit)
Watch Dog Timer	1
PWM (16-bit)
3-phase PWM (16-bit)
ADC (12-bit)(Unit)	1
ADC (ch)	8
ADC Speed (ksps)	500
DMA (ch)
DAC (bit)
Number of OP Amp.
Number of PGA
Number of Comparator	2
USART (ch)	1
UART (ch)	1
SPI (ch)	1
I2C (ch)	1
USB FS	N
LCD Driver
LED Driver / High current port
HSI Freq. (MHz)
HSI Err. (±%) 85	5
HSI Err. (±%) 105
Sub. X-tal Support	Y
Ext. X-tal Support	Y
Touch Key (ch)
CRC	Y
Min Op Voltage (V)	1.71
Max Op Voltage (V)	3.6
Min Op Temp (℃)	-40
Max Op Temp (℃)	105
Remarks	RTCC, LPUART, LP Timer
Package	20-QFN
Package Size (mm)	4x4x0.75-0.5