Hardware Description

– No specific polarization mandatory

Note: There is a diode voltage level between the negative output of the power supply and the “GND”. This could introduce some gap of voltage during measurement and instrumentation.

Figure 2-2 .Male JACK Outlet and Wires

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Caution: Do not mount more than one power supply source on AT89STK-06 board.

J5 - 9V Battery connector: – Need of a female 2 points connector

–Input supply from 6 up to 10V DC (example: 9V battery)

–Polarization mandatory

Figure 2-3 .EXT PWR Female Connector / Cable for 9V Battery

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Caution: Do not mount more than one power supply source on AT89STK-06 Starter Kit.

2.3

RESET

Although the

AT89C51CC03

& AT89C51AC3

microcontrollers have on-chip RESET

 

 

circuitry (c.f.

microcontroller

datasheet), the

AT89STK-06 board provides to the

 

 

microcontroller a RESET signal witch can come from 2 different sources:

2.3.1Power-on RESET The on-board RC network acts as power-on RESET.

2.3.2RESET Push Button By pressing the RESET push button on the AT89STK-06 board, a warm RESET of the microcontroller is performed.

2-4

AT89STK-06 Demo Board Software Demo Guide

4339C–CAN–07/05