User Manual

Table Of Contents

Jennic

A.4 Accessories

Product Description Note

JNAC001 JN5 serial level converter dongle

Connects module UART port to PC serial port to allow code

development and debug

The JNAC001 RS-232 level converter is used to translate the +/- 7V RS-232 levels to CMOS compatible logic levels.

The CMOS levels are made available through a short flying lead with a 6-way IDC socket. This can be connected to

the relevant module UART0 pins. The RS-232 Interface is available on a standard nine-way ‘D’ connector.

JNAC001 RS-232 Converter

CTS

RTS

DSR

DCD

TXD

RXD

DTR

GND

FFD

Figure 5-1: JNAC001 RS-232 Converter Connection

Pin Function

1 UART 0 TXD

2 UART 0 RXD

3 PROGRAM

4 VCC - IN

5 GND

6 GND

View looking at cable

connector

Figure 5-2: RS-232 Connector