The Early Microcontroller :
80C39 is a CMOS Version of 8048 the one that
preceded 8031-8051.
MCS48 is the set for that, MCS51 is the current set. Here is an example
project for 80C39-8748-8749 microcontroller. This code was written by
me, and it works. But the documentation is not complete or may have
errors.
Process
Controller code here 80C39
Code
for
MCS48 (editable spreadsheet online) or use pc80C39.zip.
The circuit for these are on this page along with other circuits.
This may be difficult to put together now. But the code and hardware is
near compatible to 8051 uC. Now there are may types of ADC and uC. Then
there are PIC Projects and AVR Projects.
This was supposed to have Analog in and Analog out. Some parts of the
circuit may be in the 80C51 page. This has ramp-up and ramp-down
settings for the Increment and Decrement buttons. This helps setting
setpoint quickly. There is also debouncing for the pushbutton.
Anantha Narayan 06:48 20-Apr-07
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