AT89STK-06 Ver la hoja de datos (PDF) - Atmel Corporation

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AT89STK-06

AT89STK-06 Demo Board Hardware User Guide

Atmel Corporation 

Hardware Description

2.4

2.4.1

Serial Interfaces

RS-232C

All CAN microcontrollers have one on-chip UART peripheral. Only the asynchronous

mode is supported by the AT89STK-06 board.

The AT89STK-06 board is supplied with a RS-232 driver/receiver. Only one female DB9

connector assumes the RS-232 connections. A full range of configuration can be set

with two Rx lines and two Tx lines.

Figure 2-4 . RS-232 DB9 Connections

RS-232 DB9 front view

54321

9876

pin 2

pin 3

pin 4

pin 6

pin 5

pin 7

pin 8

RS-TxD

RS-RxD

Gnd

RS-CTS

RS-RTS

Figure 2-5 . Typical PC Connection Lay-out

AT89C51CC0x / RS-232 DB9

Function

TxD (AT89C51CC0x)

RxD (AT89C51CC0x)

Gnd

Pin Nb

2

3

5

Figure 2-6. RS-232 DB9

PC / DB9 serial port

(COM1 or COMx)

Pin Nb

Function

2

RxD (PC)

3

TxD (PC)

5

Gnd

Green Rx LED

“Auto_ISP”

Jumpers

Red Tx LED

AT89STK-06 Demo Board Software Demo Guide

2-5

4339C–CAN–07/05

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