[어보브반도체(주)]

The A31L21x series is an ultra-low power microcontroller based on the high-performance ARM CortexM0+ core. It has a Flash memory of up to 128KB, a Data Flash of 4KB, and an SRAM of 20KB. Operation voltage of the device is from 1.71V to 3.6V. It provides a highly flexible and cost-effective solution for many embedded control applications. This device offers 16-bit timers, Real timer and calendar, 12-bit ADC, Comparator, CRC generator, UART, USART, LPUART, I2C, SPI, Smart card interface, LCD driver/controller, AES 128, True random number generator, DMA, 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	Upon Request
Core	CM0+
Op. Freq. (MHz)	32
Flash (Kbytes)	64
Data Flash (Kbytes)	0
RAM (Kbytes)	20
Pin Count	80
Max I/O Pins	73
Timer (8-bit)	0
Timer (16-bit)	9
Timer (32-bit)	0
Watch Dog Timer	1
PWM (8-bit)
PWM (16-bit)
3-phase PWM (16-bit)
ADC (bit)	12-bit
ADC (12-bit)(Unit)	1
ADC (ch)	16
ADC Speed (ksps)	1
DMA (ch)	7
DAC (bit)
Number of OP Amp.
Number of PGA
Number of Comparator	2
USART (ch)	2
UART (ch)	1
SPI (ch)	4
I2C (ch)	3
I2S (ch)	0
USB FS	N
USI
LCD Driver	39x8
LED Driver / High current port
HSI Freq. (MHz)	0
HSI Err. (±%) 85	9
HSI Err. (±%) 105	0
Sub. X-tal Support	Y
Ext. X-tal Support	Y
Touch Key (ch)	0
ISP	Y
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, SC, LP Timer, TS, AES-128, RNG, Data flash 4k
Package	80-LQFP
Package Size (mm)