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+--- Thread: T16M ESP32-S3 IO pins define (/showthread.php?tid=7422)
T16M ESP32-S3 IO pins define - admin - 01-20-2025
IIC Bus:
SDA:GPIO11
SCL:GPIO12
PCF8575/XL9555:U22 (output1-16): i2c address:0x25
PCF8575/XL9555:U17 (input1-16): i2c address:0x24
Note: after 2026-11-01 KinCony begin use XL9555 i2c extend chip. you can use KCS v3 "SYSTEM" webpage to scan device show the model or config by ESPHome to scan i2c bus, will find the chip model.
24C02 EPROM i2c address: 0x50
-----------------
1-wire (pull-up resistance on PCB):
1-wire1:GPIO8
1-wire2:GPIO9
1-wire3:GPIO10
1-wire4:GPIO15
1-wire5:GPIO16
1-wire6:GPIO17
1-wire7:GPIO18
-----------------
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:GPIO14
TXD:GPIO13