87C54-20 microcontroller equivalent, chmos single-chip 8-bit microcontroller.
of 16 Kbytes of program memory make it an even more powerful microcontroller for applications that require High Speed I O and up down counting capabilities such as brake .
that require High Speed I O and up down counting capabilities such as brake and traction control
Other brands and names.
VCC Supply voltage VSS Circuit ground VSS1 Secondary ground (in PLCC only) Provided to reduce ground bounce and improve power supply by-passing NOTE This pin is not a substitute for the VSS pin (pin 22) 4
Port 1 receives the low-order address bytes.
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