CFA12232A1 Example Code

Information

Example firmware for Crystalfontz CFAG12232A1 Family

• CFAG12232-TMI-TJ
• CFAG12232-YYH-TJ

Code written for Seeeduino 3.3v (important!), an open-source 3.3v capable Arduino clone.

https://www.seeedstudio.com/Seeeduino-V4.2-p-2517.html

https://github.com/SeeedDocument/SeeeduinoV4/raw/master/resources/Seeeduino_v4.2_sch.pdf

Controller

The controller is a Wuxi i-core AiP31520

https://www.crystalfontz.com/controllers/Wuxi/AiP31520/

Please refer the display datasheet before connecting to a power source.

Further, a variable resistor connection is required for contrast adjustment and its connection scheme has been outlined in the datasheet.

Additionally, refer to the datasheet for proper backlight connection

Connection Guide

Function - 6800 Parallel	Seeeduino	Port	Display pin
	Power Lines
Power 3.3V	3.3V		2
Ground	GND		1
	Control Lines
Data/Instruction (A0)	D8	PORTB	4
Read/Write (R/W)	D9	PORTB	11
Chip enable IC1 (CS1)	D10	PORTB	5
Chip enable IC2 (CS2)	D11	PORTB	6
Reset (RES)	D12	PORTB	18
	Data Lines
DATA BUS LINE (DB0)	D0	PORTD	10
DATA BUS LINE (DB1)	D1	PORTD	11
DATA BUS LINE (DB2)	D2	PORTD	12
DATA BUS LINE (DB3)	D3	PORTD	13
DATA BUS LINE (DB4)	D4	PORTD	14
DATA BUS LINE (DB5)	D5	PORTD	15
DATA BUS LINE (DB6)	D6	PORTD	16
DATA BUS LINE (DB7)	D7	PORTD	17

Example explanation

This example highlights the ability to display several fullscreen demos as well as the splash screen for this product family

This splash screen was converted to code using our utility Image2Code