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AT89Sxx Cheap and Simple Learning Board

AT89Sxx Cheap and Simple Learning Board

Build your own a cheap simple Microcontroller learning board S-52. The board is based on ATMEL new ISP chip AT89S51, AT89S52, or AT89S53. This board can be used by beginners for learning Assembly and C language programming. Single sided PCB file included.
The author designed this leaning board to be used as a tool for learning MCS-51 Microcontrollers.
The AT89Sxx learning board features,
Designed for new ISP chips, 89S51, 89S52, and 89S53, 40-pin DIP,
In System Programmable (ISP) through the 6-pin header and a jumper, (no need external programmer),
TxD and RxD serial port for communicating with serial devices,
32 bit GPIO,
Onboard rectifier and +5V DC voltage regulator,
Single Sided PCB design.
Hardware
The board design is kept as simple as possible so that everone can make the learning board easily. The schematic shown below shows the complete hardware schematic of the AT89Sxx learning board. PORT0, PORT1, PORT2, and PORT3 are available for interfacing external devices. P3.0 and P3.1 are being used for RS232 interface.

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