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T32M ESP32-S3 IO pins define - admin - 06-23-2025
analog A1 (0-5v): GPIO7
analog A2 (0-5v): GPIO6
analog A3 (4-20mA): GPIO5
analog A4 (4-20mA): GPIO4
-----------------
IIC Bus-1:
SDA:GPIO48
SCL:GPIO47
PCF8575: (output1-16): i2c address:0x20
PCF8575: (output17-32): i2c address:0x21
PCF8575: (input1-16): i2c address:0x24
PCF8575: (input17-32): i2c address:0x25
24C02 EPROM i2c address: 0x50
-----------------
1-wire (pull-up resistance on PCB):
GPIO15
GPIO16
GPIO17
GPIO18
free GPIO:
GPIO8
GPIO9
GPIO10
-----------------
Ethernet (W5500) I/O define:
clk_pin: GPIO42
mosi_pin: GPIO43
miso_pin: GPIO44
cs_pin: GPIO41
interrupt_pin: GPIO2
reset_pin: GPIO1
--------------------
RS485:
RXD:GPIO21
TXD:GPIO13
EN:GPIO14