User's Manual

©Ehong Technology Co.,Ltd 2014-2019. Page 9 of 14
15
VCC
VCC for LDO and
Buck
1.
Supply, 1.8 V ~ 3.6 V
2. A set of ADC can be used for battery voltage
detection
3. Test point for MP calibration shall be reserved
16
GND
17
PWM1
AIO
Programmable IO
Support PWM function LED
(fixed Timer)
Connect cold light by default
18
PWM2
AIO
Programmable IO
Support PWM function LED
(fixed Timer)
Connect cold light by default
19
PWM3
OD_GPIO
Programmable IO
1. The I2C SDA
2. LED supported PWM such as breathing lamp
(adjustable Timer)
3. RED by default
20
PWM4
OD_GPIO
Programmable IO
1. The I2C SDA
2. LED supported PWM such as breathing lamp
(adjustable Timer)
3. GREEN by default
21
PWM5
OD_GPIO
Programmable IO
1.LED supported PWM such as breathing lamp
(adjustable Timer)
2. Default to receive BLUE
22
ADC1
AIO/DIO
Programmable IO
GPIO
23
GPIO1
DIO
Programmable IO
GPIO
24
GPIO2
DIO
Programmable IO
GPIO
TESTPOI
NT
GPIO3
TPx
Programmable IO
BLE Test mode
TESTPOI
NT
GPIO2
TPx
Programmable IO
1. The MPTOOL crystal trim
2. Test point for MP calibration shall be reserved
Table 6：PIN Terminal Description
6. Physical Interfaces
6.1Power Supply
➢ The module power supply 3v coin cell batteries or DC 3.3v
➢ Power supply pin connection capacitor to chip and pin as far as possible close
➢ Capacitor decouples power to the chip
➢ Capacitor prevents noise coupling back to power plane.
Figure 2： Power Supply PCB Design
EH-MC16 Data Sheet