CFAL32128A0-0171B-WC

Crystalfontz CFAL32128A0-0171B-WC - Tiny OLED with Capacitive Touch

Example Seeeduino (Arduino Clone) Software.

This product can be found here: https://www.crystalfontz.com/product/cfal32128a00171bwc

Display Connection Details

By default the "prefs.h" file is configured for I2C display & touch interfaces. You'll need to edit the file if using a different interface configuration.

Display using SPI interface

OLED / Touch Module Pin	Seeeduino Pin	Connection Description
17 (DCS)	10	Display CS
19 (RES)	3	Display Reset
21 (D/C)	8	Display D/C
26 (D0)	13 / SCK	Display SPI SCK
27 (D1)	11 / MOSI	Display SPI MOSI
28 (D2)	11 / MOSI	Display SPI MOSI
29 (BS1)	GND	Display SPI Select

Display using I2C interface

OLED / Touch Module Pin	Seeeduino Pin	Connection Description
17 (DCS)	3.3V	Display CS (tied high)
19 (RES)	3	Display Reset
21 (D/C)	GND	Display D/C (see note)
26 (D0)	SCL	Display I2C SCL
27 (D1)	SDA	Display I2C SDA
29 (D2)	SDA	Display I2C SDA
29 (BS1)	3.3V	Display I2C Select

note: The D/C pin selects display I2C address. See "prefs.h" for details.

Touch Connection Details

Touch using SPI interface

OLED / Touch Module Pin	Seeeduino Pin	Connection Description
18 (TCS)	9	Touch CS
20 (TRES)	4	Touch Reset
22 (IRQ)	2	Touch IRQ
23 (TD0)	13 / SCK	Touch SPI SCK
24 (TD1)	11 / MOSI	Touch SPI MOSI
25 (TD2)	12 / MISO	Touch SPI MISO
30 (BS3)	GND	Touch SPI Select

Touch using I2C interface

OLED / Touch Module Pin	Seeeduino Pin	Connection Description
18 (TCS)	9	Touch CS
20 (TRES)	4	Touch Reset
22 (IRQ)	2	Touch IRQ
23 (TD0)	SCL	Touch I2C SCL
24 (TD1)	SDA	Touch I2C SDA
25 (TD2)	SDA	Touch I2C SDA
30 (BS3)	3.3V	Touch I2C Select