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. 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.
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
AT89Sxx Simple Learning Board: [Link]