+- Smart Home Automation Forum (https://www.kincony.com/forum)
+-- Forum: Technical Support (https://www.kincony.com/forum/forumdisplay.php?fid=72)
+--- Forum: T128M (https://www.kincony.com/forum/forumdisplay.php?fid=82)
+--- Thread: T128M ESP32-S3 IO pins define (/showthread.php?tid=8247)
T128M 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:0x27
PCF8575: (output17-32): i2c address:0x26
PCF8575: (output33-48): i2c address:0x23
PCF8575: (output49-64): i2c address:0x22
PCF8575: (output65-80): i2c address:0x25
PCF8575: (output81-96): i2c address:0x24
PCF8575: (output97-112): i2c address:0x21
PCF8575: (output113-128): i2c address:0x20
24C02 EPROM i2c address: 0x50
------------------
IIC Bus-2:
SDA:GPIO12
SCL:GPIO11
PCF8575: (input1-16): i2c address:0x27
PCF8575: (input17-32): i2c address:0x26
PCF8575: (input33-48): i2c address:0x23
PCF8575: (input49-64): i2c address:0x22
PCF8575: (input65-80): i2c address:0x25
PCF8575: (input81-96): i2c address:0x24
PCF8575: (input97-112): i2c address:0x21
PCF8575: (input113-128): i2c address:0x20
-----------------
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