W800_Smart_Watch

A Smart Watch project using the Chinese W800 MCU.

Pin Name	Type	Function	Pull UP/DOWN	Comment
PB_20	I/O	UART0_RX/PWM1/UART1_CTS/I²C_SCL	U/D
PB_19	I/O	UART0_TX/PWM0/UART1_RTS/I²C_SDA	U/D
WAKEUP	I	External Wake Up Pin	D	The chip is waken up when the pin is HIGH
RESET	I	Reset Pin	D
XTAL_OUT	O	External crystal output
XTAL_IN	I	External crystal input
AVDD3V3	P	Chip power supply, 3.3V
ANT	I/O	RF Antenna
AVDD3V3	P	Chip power supply, 3.3V
AVDD3V3	P	Chip power supply, 3.3V
AVDD3V3_AUX	P	Chip power supply, 3.3V
TEST	I	Test function configuration pin
BOOTMODE	I/O	BOOTMODE and I²S_MCLK/LSPI_CS/PWM2/I²S_DO	U/D
PA_1	I/O	JTAG_CK/I²C_SCL/PWM3/I²S_LRCK/ADC0	U/D
PA_4	I/O	JTAG_SWO/I²C_SDA/PWM4/I²S_BCK/ADC1	U/D
PA_7	I/O	PWM4/LSPI_MOSI/I²S_MCK/I²S_DI/Touch0	U/D
VDD3V3IO	P	IO power supply, 3.3V
PB_0	I/O	PWM0/LSPI_MISO/UART3_TX/PSRAM_CK/Touch3	U/D
PB_1	I/O	PWM1/LSPI_CK/UART3_RX/PSRAM_CS/Touch4	U/D
PB_2	I/O	PWM2/LSPI_CK/UART2_TX/PSRAM_D0/Touch5	U/D
PB_3	I/O	PWM3/LSPI_MISO/UART2_RX/PSRAM_D1/Touch6	U/D
PB_4	I/O	LSPI_CS/UART2_RTS/UART4_TX/PSRAM_D2/Touch7	U/D
PB_5	I/O	LSPI_MOSI/UART2_CTS/UART4_RX/PSRAM_D3/Touch8	U/D
VDD3V3IO	P	IO power supply, 3.3V
CAP	I	External capacitor, 4.7µF
PB_6	I/O	UART1_TX/MMC_CLK/HSPI_CK/SDIO_CK/Touch9	U/D
PB_7	I/O	UART1_RX/MMC_CMD/HSPI_INT/SDIO_CMD/Touch10	U/D
PB_8	I/O	I²S_BCK/MMC_D0/PWM_BREAK/SDIO_D0/Touch11	U/D
PB_9	I/O	I²S_LRCK/MMC_D1/HSPI_CS/SDIO_D1/Touch12	U/D
PB_10	I/O	I²S_DI/MMC_D2/HSPI_DI/SDIO_D2	U/D
VDD3V3IO	P	IO power supply, 3.3V
PB_11	I/O	I²S_DO/MMC_D3/HSPI_DO/SDIO_D3	U/D
GND	P	Ground (Central Pad)