User's Manual

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Address : 2674 N. First Street, ste 220, San Jose, CA 95134
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地址：天津市华苑产业区海泰西路 18 号西 3B-202（300384）
9
2.7 Pin Assignment
Name Type Pin # Description ALT Function 5V Tolerant Initial State
UART Interface
RXD I 13 Receive data Y
TXD O 14 Transmit data Y
RTS O 12 Request to send (active low) I2C Data/Aux Uart Rx Y
CTS I 11 Clear to send (active low) I2C Clock/Aux Uart Tx Y
Reserved
BOOT 0 I 9 Boot 0
Power and Ground
V
in
8 V
in
GND 7 GND
Reset
RESETN I 10 Reset input (active low for 5 ms) 2.5V max
LPO
LPO I 15 LPO input
GPIO – General Purpose Input/Output
GPIO [1] I/O 1 General Purpose Input/Output SPI MISO/I2SextSD Y Input pull down
GPIO [2] I/O 2 General Purpose Input/Output SPI MOSI/I2S SD Y Floating
GPIO [3] I/O 3 General Purpose Input/Output SPI SCLK/ I2S CK Y Input pull down
GPIO [4] I/O 4 General Purpose Input/Output SPI SS/I2S WS Y Input pull down
GPIO [5] I/O 5 General Purpose Input/Output ADC 0 Y Input pull down
GPIO [6] I/O 6 General Purpose Input/Output ADC 1 Y Input pull down