Build your own a cheap simple Microcontroller learning board S-52. The board is based on ATMEL’s 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.
I have 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.
The board design is kept as simple as possible so that even a total newbie with microcontroller can easily make his owns learning board. The schematic shown below depicts the complete hardware of the AT89Sxx learning board. Port 0,1,2,3 are available for interfacing external devices. P3.0 and P3.1 are being used for UART.
Bill of Materials
R1 330 1/4W +/-5%
R2 10K 1/4W +/-5%
C1 1000uF/16V electrolytic capacitor
C2 100uF/16V electrolytic capacitor
C3 100nF multilayer or ceramic
C4 10uF/16V electrolytic
C5,C6 33pF ceramic
D1 1N4001 / 1N4002 silicon rectifier diode
U1 Lm7805, voltage regulator
DB25 parallel port, 25pins connector
For more detail: Cheap and Simple Learning Board using AT89S51