Product Description

Xiaomi Communications Co., Ltd.
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figure 2-1. MHCWB4P-IB pin distribution
MHCWB4P-IB has a total of 18 pins. See Table 2-1 for pin definitions.
table 2-1. MHCWB4P-IB pin definition
Number
Pin name
Description
1
VDD
Power
The maximum output current of the external power supply is
recommended to be 500 mA and above.
2
CHIP-EN
Module enable
3
GPIO2
I/O
4
GPIO4
I/O
5
GPIO13
I/O
Communication RX
6
GPIO14
I/O
Communication TX
7
GIPO17
I/O
8
GPIO18
I/O
9
GND
Ground
10
GPIO19
I/O