User's Manual

Bluetooth Low Energy Module
Shanghai Ehong Technologies Co., Ltd
5.
Pinout and Terminal Description
5.1. Pin Configuration
Figure 1： Pinout of EH-MC20
Symbol
Pin
PAD Type Description
GND
1
Ground Ground
VDD_3V3
2
Power supply
Button cell battery or DC
1.8V to 3.6V
VDD_3V3
3
Power supply
Button cell battery or DC
1.8V to 3.6V
PWM0/ANA_E(0)
4
Digital I/O PWM0/GPIO/ANA_E0
PWM1/ANA_E(1)
5
Digital I/O PWM1/GPIO/ANA_E1
PWM0/ANA_A(0)
6
Digital I/O PWM0/GPIO/ANA_A0