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watch_2019.md

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1.Pinout table

Peripherals 2019/TOUCH 2019/NO TOUCH T BLOCK
Core ESP32-DOWDQ6 ESP32-DOWDQ6 ESP32-DOWDQ6
Flash 16MB 16MB 16MB
SPRAM 8MB 8MB 8MB
TOUCH Driver FT6236 N/A N/A
TFT Driver ST7789 ST7789 N/A
TFT Size 240x240/1.54 240x240/1.54 N/A
TFT RST N/A N/A N/A
TFT MISO N/A N/A N/A
TFT MOSI 19 19 N/A
TFT SCLK 18 18 N/A
TFT DC 27 27 N/A
TFT CS 5 5 N/A
TFT BackLight 12 12 N/A
SENSOR SDA[3] 21 21 21
SENSOR SCL[3] 22 22 22
FT6236 SDA 23 N/A N/A
FT6236 SCL 32 N/A N/A
MOTOR N/A[1] N/A[1] N/A[1]
BMA423 Interrupt 39 N/A N/A
FT6236 Interrupt 38 38[2] N/A
PCF8563 Interrupt 37 37 37
BUTTON 36 36 36
AXP202 Interrupt 35 35 35
I2S BCK N/A[1] N/A[1] N/A[1]
I2S WS N/A[1] N/A[1] N/A[1]
I2S DOUT N/A[1] N/A[1] N/A[1]
IR Send N/A N/A N/A
SD MISO N/A N/A N/A
SD MOSI N/A N/A N/A
SD SCLK N/A N/A N/A
SD CS N/A N/A N/A

[1]. According to different base plates

[2]. Capacitive touch button

[3]. SENSOR SDA and SCL share PCF8563, BMA423, AXP202,T-Block without BMA423, use MPU6050

2. AXP202 Power domain

channel Explanation
DC2 NO USE
DC3 ESP32(Can't close)
LDO1 Can't control
LDO2 Backlight
LDO3 Backplane power supply
LDO4 S76/78G Backplane only

3. Bottom plate Pinout

Standard

ESP32 Core GPIO33 GPIO25 GPIO21 GPIO22
Standard Motor Speaker SDA SCL
  • Onboard SD card slot
  • The motor/speaker power domain is LDO3

SIM800L

ESP32 Core GPIO14 GPIO15 GPIO4 GPIO33 GPIO34
SIM800L RST PWRKEY BOOST_CTRL TX RX
  • No onboard SD card slot
  • The modem power domain is LDO3

SIM868

ESP32 Core GPIO33 GPIO34
SIM868 TX RX
  • Onboard SD card slot
  • The gps power domain is LDO3

MPR121

ESP32 Core GPIO21 GPIO22
MPR121 SDA SCL
  • Onboard SD card slot
  • The sensor power domain is LDO3

S7XG_Lora & GPS

ESP32 Core GPIO33 GPIO34
S7XG_Lora TX RX
  • Onboard SD card slot
  • The S76/78G power domain is LDO3
  • The gps power domain is LDO3

3.datasheet

4.other