Data Sheet

Module：825X-LA Series
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Fig 3 Top view
Table 6 the hardware Pin definition of the module
Table 6 825X-LA Series Pin definition
8 Pin Definition
PIN Definition IC Pin Description
1 Ant / BT
2 GND / Module power reference
3 ADC PB1 SAR ADC input /UART_TX / GPIO PB[1]
4 SWS PA7 Single wire slave
5 UART_TX PD7 7816_TRX(UART_TX) / SPI clock (I2C_SCK) / GPIO PD[7]
6 UART_RX PA0
UART_RX /PWM0 inverting output / GPIO PA[0]
7 Int_A PC0 GPIO PC[0]/ I2C serial data / PWM4 inverting output / UART_RTS
8 Int_B PC2
GPIO PC[2]/ PWM0 output / 7816_TRX(UART_TX) /
I2C serial data/ (optional) 32kHz crystal output
9 VBAT / Supply power 1.8V-3.3V；
10 GND / Module power reference
11 PWM0 PC1
PWM0 output / I2C serial clock / PWM1 inverting output /
GPIO PC[1]
12 PWM1 PC3
PWM1 output / UART_RX / I2C serial clock /
(optional)32kHz crystal input / GPIO PC[3]
13 PWM2 PC4
PWM2 output / UART_CTS / PWM0 inverting output /
SAR ADC input / GPIO PC[4]
14 PWM4 PB4
PWM4 output /SAR ADC input / GPIO PB[4]
15 PWM5 PB5
PWM5 output / SAR ADC input / GPIO PB[5]