Product Info

9
NOTES:
1) All digital IOs including PA<0> ~ PD<7> can be used as GPIOs and have
configurable pull-up/pulldown resistor.
2) SPI:
◎ PD<7>: SPI_CK, PB<6>: SPI_DI, PB<7>: SPI_DO, PD<2>: SPI_CN
◎ PA<2>: DO, PA<3>: DI, PA<4>: CK, PD<6>: CN 3)
I2C:
◎ PC<0> ~ PC<3> can be used as I2C. PC<0>: I2C_SDA, PC<1>: I2C_SCK,
PC<2>: I2C_SDA, PC<3>: I2C_SCK
◎ I2C can also be multiplexed with SPI interface, i.e. I2C_SDA/I2C_SCK can be
multiplexed with SPI_DI /SPI_CK respectively.
4) Audio PGA/AMIC input: PC<0>~PC<3>. Any GPIO pin can be used as AMIC BIAS.
5) DMIC:
◎PA<0>: DMIC_DI, PA<1>: DMIC_CLK
6) I2S:
◎PD<7>: I2S_BCK, PA<1>: I2S_CLK, PD<2>: I2S_LR, PD<3>: I2S_SDI, PD<4>:
I2S_SDO
7) Stereo audio output:
◎PB<4>: SDM_P0, PB<5>: SDM_N0, PB<6>: SDM_P1, PB<7>: SDM_N1
8) UART:
◎PA<0>: UART_RX, PA<2>: UART_TX, PB<0>: UART_RX, PB<1>: UART_TX,
PB<7>: UART_RX, PC<3>: UART_RX, PC<5>: UART_RX, PD<6>: UART_RX
◎ UART hardware flow control:
PA<3>: UART_CTS, PA<4>: UART_RTS, PA<7>: UART_RTS, PB<2>: UART_CTS,
PB<3>: UART_RTS, PB<6>: UART_RTS, PC<0>: UART_RTS, PC<4>: UART_CTS,
PD<1>: UART_CTS
◎ UART 7816:
PD<7>: 7816_TRX (UART_TX), PA<1>: 7816_CLK, PC<2>: 7816_TRX (UART_TX),
PD<0>: 7816_TRX (UART_TX), PD<3>: 7816_TRX (UART_TX)
9) USB:
◎PA<5>: DM
◎PA<6>: DP
10) Single Wire debug interface:
◎PA<7>: SWS. SWS can also be multiplexed with DP
◎PD<4>: SWM
11) RX_CYC2LNA & TX_CYC2PA:
◎PB<2>: RX_CYC2LNA, PB<3>: TX_CYC2PA, PC<6>: RX_CYC2LNA, PC<7>:
TX_CYC2PA, PD<0>: RX_CYC2LNA, PD<1>: TX_CYC2PA
◎RX_CYC2LNA/TX_CYC2PA serves to control enabling external PA/LNA.
12) ATSEL0~2:
◎PB<0>: ATSEL1, PB<1>: ATSEL2, PC<5>: ATSEL0, PC<6>: ATSEL1, PC<7>:
ATSEL2, PD<6>: ATSEL0