Specifications

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深圳市芯中芯科技有限公司

SHENZHENSHI XINZHONGXIN TECHNOLOGY CO., LTD.

地址：深圳市宝安区沙井东环工业区 A3 栋电话：0755-29179480/81 /82 传真: 0755-84736169

公司网址：WWW.C-CHIP.COM.CN

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C-3L_V1.0

6.3 Pin function description

Pin Name

Type

Description

1 RST

reset, active low

2 P23_ADC/TDO

I/O P23 or ADC or JTAG TDO

3 EN

Chip enable, active high

4 P14

I/O

P14

5 PWM5

I/O

PWM5

6 PWM4

I/O

PWM4

7 PWM0

I/O

PWM0

8 3V3

Power input(3.3V-3.6V)

9 GND

GND

10 PWM3

I/O

PWM3

11 UART2

I/O

UART2

12 P16

I/O

P16

13 PWM2

I/O

PWM2

14 PWM1

I/O

PWM1

15 1RX

I/O

1RX

16 1TX

I/O

1TX

Notes:

1. I：Input

2. O：Output

3. P：Power

4. G：Ground

7 Application Note

A. During the use of the module, please pay attention to avoid the influence of power amplifier, booster

line, DC/DC circuit and other interference sources on the module, and avoid the formation of series

circuit between the power supply loop of the module and the high-power circuit unit to reduce the

interference

B. If there are batteries, metal objects, LCD screens, speakers, etc. next to the module antenna, the

distance from the antenna should be at least 15mm(as shown in the figure).