6 5 4 3 2 1 REVISION RECORD LTR ECO NO: APPROVED: DATE: D D VDD_BAT RF RF VDD_BAT PIO[0]/UART_TX 1 1 GND4 GND6 1 1 PIO[1]/ UART_RX WAKE 1 PIO[2] GND5 1 WAKE PIO[0]/ UART_TX C AIO[0] 1 1 PIO[3]/ SF_DIN 1 PIO[4]/ SF_CS# 1 1 1 PIO[10] 1 PIO[10] 1 PIO[11] 1 PIO[11] 1 1 SPI_PIO# GND1 1 1 PIO[6]/CS# PIO[6]/ DEBUG_CS# GND2 1 1 PIO[7]/MOSI PIO[7]/ DEBUG_MOSI C SPI_PIO# PIO[5]/CLK PIO[5]/ DEBUG_CLK I2C_SDA I2C_SDA PIO[9] PIO[9] PIO[4]/SF_CS# I2C_SCL I2