Monday, March 16, 2015


Build your own a programmer for writing intel-HEX file to the 89C51, 89C52 and 89C55, PCB file included. The prototype board may be builtusing universal PCB with point-to-point soldering.

Programmer for AT89S52 Microcontroller

The 89C51 with ez52.hex receives a 9600 baud serialdata from PC and generates the appropriated signal applying to the ZIFsocket. P0 is for bi-directional data transferring. P1 provides A0-A7,P2.0-P2.6 for A8-A14.

Programmer for AT89S52 Microcontroller

Atmel AT89S52

The Atmel AT89S52 is an 8051 based Full Static CMOS controller with Three-Level Program Memory Lock, 32 I/O lines, 3 Timers/Counters, 8 Interrupts Sources, Watchdog Timer, 2 DPTRs, 8K Flash Memory, 256 Bytes On-chip RAM.

Compatible with the industry-standard 80C51 instruction set and pinout. The on-chip Flash allows the program  memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer.


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