Atmel AT89STK-06 Uživatelská příručka stáhnout pdf (Strana 11)

Hardware Description

2-8 AT89STK-03 Hardware User Guide

7609B–SCR–11/06

2.4.2 USB Peripheral All the required hardware to develop a USB firmware is available and includes:

– a USB connector

– 2 test points D+ / D-

– a DETACH pushbutton which enables to connect / disconnect the pull-up on D+ and then to

simulate an USB Attach/Detach operation. This avoids removals and insertions of the USB

cable.

2.4.3 SPI An SPI interface is available.

2.4.4 RS232 All the required hardware to manage a RS232C interface is available. Tx and Rx can be

connected to the LEDs (Rx and Tx) by means of SW28 and SW29 solder pads on solder

side of the board.

– 9 pin SUBD connector

– Transceiver MAX202

2.4.5 SIM Alternate Card The following hardware is supplied:

– SIM connector

– power supply jumper

2.4.6 PLL Filter 1. PLCC68 / VQFP64

PLL Filter is composed by C7, C10, R9

2. PLCC28

PLL filter is composed by C25, R16, C26.

LED2 Green

General purpose led - Connected to P3.6 - Enabled by LED2 jumper or SW21

solder pad

LED3 Green

General purpose led - Connected to P3.7 - Enabled by LED3 jumper or SW22

solder pad

LED4 Green

General purpose led - Connected to P4.3 (Only on PLCC68 / VQFP64 packages)

- Enabled by LED4 jumper

LED5 Green

General purpose led - Connected to P4.4 (Only on PLCC68 / VQFP64 packages)

- Enabled by LED5 jumper

LED6 Green

General purpose led - Connected to P4.5 (Only on PLCC68 / VQFP64 packages)

- Enabled by LED6 jumper or SW25 solder pad

TX Green

Serial Transmission Line Status - Connected to TXD / P3.1 - Enabled by SW28

solder pad

RX Red

Serial Reception Line Status - Connected to RXD / P3.0 - Enabled by SW29

solder pad

Name Color Description

SIM PWR

5V power supply 3.3V power supply

3.3V

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 37 38

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