Overview：

The AC781x product serials is  MCU of automotive grade, complies with the AEC-Q100 specification, and is suitable for automotive electronics and high reliability industrial applications.Typical applications cover BCM, T-BOX, BLDC motor control, industrial control, AC charging piles, etc.
The AC781x device family is based on ARM Cortex®-M3 core, running up to 100MHz，up to 256KB Flash memory，supply voltage ranges from 2.7 to 5.5V, excellent EMC/ESD capability to be suit for harsher environment.

Features：

- ARM Cortex®-M3 core,100MHz, single cycle 32x32 multiplier
- Support up to 256KB embedded Flash memory
- Support up to 64KB RAM
- Support 2*CAN 2.0B
- Support 1*LIN 2.1, 1*URAT LIN
- Support 2*SPI
- Support up to 6*UART
- Support 2*I2C
- 2.7-5.5V power supply
- Temperature range: -40 to 125 °C

Chip Block Diagram：

Development Board Functional Description












Device Name	Number	Remark
Power	1	+12V
Reset	1	K2
Trap PIN	3	BOOT, UART1_CTS, UART1_RTS only functions on the MCUstartup time, and can be used for other purposes after startup.
NMI	1	K1
JTAG/SWD	1
CAN	2 set	CAN1,CAN2,CAN1_TX and CAN1_RX , wichi are signals all from the IC.
LIN	2 set	HWLIN, 1 SWLIN(UART6)
UART	3 set	UART1, UART_SFLASH, UART2(debug/ISP)
LED	3	1 Power Indicator LED, 2 GPIO LED
I2C	2 set	I2C1, I2C2(OLED)
SPI	1	SPI2
ADCKey	3	K3, K4, K5
GPIOKey	2	K6, K7
sFlash	1
UART2 to USB	1	used to debug and printLOG or download program in ISP Mode (UART2carrier or USB).











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