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TTGO_TWatch_Library/docs/pinmap.md

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The following only applies to T-Watch, please click here to view LilyPi

1.Pinout table

Peripherals 2019/TOUCH 2019/NO TOUCH T BLOCK T-Watch2020 V1
Core ESP32-DOWDQ6 ESP32-DOWDQ6 ESP32-DOWDQ6 ESP32-DOWDQ6
Flash 16MB 16MB 16MB 16MB
SPRAM 8MB 8MB 8MB 8MB
TOUCH Driver FT6236 N/A N/A FT6236
TFT Driver ST7789 ST7789 N/A ST7789
TFT Size 240x240/1.54 240x240/1.54 N/A 240x240/1.54
TFT RST N/A N/A N/A N/A
TFT MISO N/A N/A N/A N/A
TFT MOSI 19 19 N/A 19
TFT SCLK 18 18 N/A 18
TFT DC 27 27 N/A 27
TFT CS 5 5 N/A 5
TFT BackLight 12 12 N/A 12
SENSOR SDA[3] 21 21 21 21
SENSOR SCL[3] 22 22 22 22
FT6236 SDA 23 N/A N/A 23
FT6236 SCL 32 N/A N/A 32
MOTOR N/A[1] N/A[1] N/A[1] 4
BMA423 Interrupt 39 N/A N/A 39
FT6236 Interrupt 38 38[2] N/A 38
PCF8563 Interrupt 37 37 37 37
BUTTON 36 36 36 N/A
AXP192 Interrupt 35 35 35 35
I2S BCK N/A[1] N/A[1] N/A[1] 26
I2S WS N/A[1] N/A[1] N/A[1] 25
I2S DOUT N/A[1] N/A[1] N/A[1] 33
IR Send N/A N/A N/A 13
SD MISO N/A N/A N/A N/A
SD MOSI N/A N/A N/A N/A
SD SCLK N/A N/A N/A N/A
SD CS N/A N/A N/A N/A

[1]. According to different base plates

[2]. Capacitive touch button

[3]. SENSOR SDA and SCL share PCF8563, BMA423, AXP192,T-Block without BMA423, use MPU6050

[4]. T-Watch2020 V1, Audio audio power domain is controlled by AXP202 LDO3

3. AXP202 power management channel

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
  • In T-Watch 2020, LDO3 is the audio power domain, and the remaining power channels are not applicable

2. Bottom plate Pinout(The following does not apply to T-Watch2020)

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