Name: Adafruit PCF8575 I2C 16 GPIO Expander Breakout
Brand: Adafruit

ADA5611 · AdafruitActive

Adafruit product #5611 — built on PCF8575. Interfaces: I2C.

Part number	ADA5611
Manufacturer	Adafruit
Category	Interface & Expansion › RTC & Timing
Pins	40

Adafruit PCF8575 I2C 16 GPIO Expander Breakout pinout

Pin	Name	Type
1	INTA	bidirectional
2	A0	bidirectional
3	A1	bidirectional
4	A2	bidirectional
5	GPB7	bidirectional
6	GPB6	bidirectional
7	GPB5	bidirectional
8	GPB4	bidirectional
9	GPB3	bidirectional
10	GPB2	bidirectional
11	GPB1	bidirectional
12	GPB0	bidirectional
13	VCC	power
14	VCC	power
15	VCC	power
16	VCC	power
17	VCC	power
18	VCC	power
19	VCC	power
20	VCC	power
21	GND	ground
22	GND	ground
23	GND	ground
24	GND	ground
25	GND	ground
26	GND	ground
27	GND	ground
28	GND	ground
29	VCC	power
30	GND	ground
31	SCL	bidirectional
32	SDA	bidirectional
33	GPA0	bidirectional
34	GPA1	bidirectional
35	GPA2	bidirectional
36	GPA3	bidirectional
37	GPA4	bidirectional
38	GPA5	bidirectional
39	GPA6	bidirectional
40	GPA7	bidirectional