ISP Programmer-2

EASY PROGRAMMER ISP 89SXXX

Introduction

This ISP Programmer can be used either for in-system programming or as a stand-alone spi programmer for Atmel ISP programmable devices.

Hardware

Figure T.4 shows the circuit diagram of the in-system programmer interface, the power to the interface is provided by the target system. The 74LS244 ic isolate and buffer the parallel port signals.

Figure T.1. Programmer AT89S

Figure T.2. Top View Programmer AT89S

Figure T.3. Bottom View Programmer AT89S

Figure T.4 Schematic Diagram Programmer with LPT Connection

Use ATMEL ISP Software to program the microcontroller.

Download : Programmer Schematic

T A R G E T

Target is the chip or microcontroller ( I am using 89s51 microcontroller ) that we are going to keep our program, target is the brain for your whole circuit. The target that I have been build is shown in figure T.5, from this circuit you can use all port and connected to others circuit.

Figure T.5. Diagram Schematic Target

Figure T.6. Target Board