Description
This is a simple 8052 microprocessor demo board PCB with spi programming interface for Atmel 89s8252, 89s8253 and serial programmer for ds89c4x0. You can configure it choosing the correct components following the instructions on the backside of the PCB. It has all the pins on headers, you can use it like and Arduino board.
Schematics:

Project: https://oshwlab.com/bigjohnson/ds89c450_1_copy_copy_copy
BOM:





