WL865E4-P Module Hardware User Guide
1VV0301580 Rev. 4
Page
13
of
56
2019-08-08
3.
PINS ALLOCATION
Pin-out Table
Pin Signal
I/O
Function
Type
Comment
USB HS 2.0 COMMUNICATION PORT
12
VUSB
I
Power Supply for the
internal USB transceiver.
POWER
Connect to
VDD_BLE
13
USB_D-
AIO
USB differential Data -
AIO
Used only for
programming
and testing
14
USB_D+
AIO
USB differential Data +
AIO
Used only for
programming
and testing
High Speed Asynchronous Serial Port (USIF0)
23
UART0_CTS / GPIO_22
DI
Input
VDD_VIO
Max baud rate
3 Mbps
24
UART0_RTS / GPIO_23
DO
Output
VDD_VIO
Max baud rate
3 Mbps
25
UART0_RXD / GPIO_24
DI
Serial data input
VDD_VIO
Max baud rate
3 Mbps
26
UART0_TXD / GPIO_25
DO
Serial data output
VDD_VIO
Max baud rate
3 Mbps
Low Speed Asynchronous Serial Port (USIF1)
27
UART1_RXD / GPIO_26
DI
Serial data input
VDD_VIO
Max baud rate
115200 bps
28
UART1_TXD / GPIO_27
DO
Serial data output
VDD_VIO
Max baud rate
115200 bps
Serial Peripheral Interface (SPI)
53
SPI_M_CS / GPIO_11
DIO
General Purpose
Input/Output
VDD_VIO
SPI Chip
Select (Master)
(Active LOW)
54
SPI_M_CLK / GPIO_12
DIO
General Purpose
Input/Output
VDD_VIO
SPI Clock
(Master)
