User's Manual

Promi-ESD User Manual – Connections 25

 Pin Assignment (ESD02)

GND

VDD

Status

RST

RXD

TXD

RTS

CTS

Antenna

Pin no. Pin name Direction Description Signal Level

1 GND I Power Ground Ground

2 VDD I DC input (3.0 ~ 3.3V) Power

3 Status O Bluetooth Connect

Detect (Active High)

TTL

4 RST I Reset (Active Low) TTL

5 CTS I UART Clear to Send TTL

6 RTS O UART Ready to Send TTL

7 TXD O UART data out TTL

8 RXD I UART data input TTL

RTS/CTS : RTS and CTS signal will be used for Hardware Flow Control of

Promi-ESD.

Promi-ESD RTS  CTS

Promi-ESD CTS  RTS

If you are not using Hardware flow control (handshaking), please bridge CTS and

GND to disable the function.