NEe Microcomputers, Inc.
PROGRAMMABLE INTERVAL TIMER NEe p.
PD8253 p.
PD8253-5 DESCR IPTION The NEC flPD8253-5 contains three independent, programmable, multi-modal 16-bit counter/timers.
It is designed as a general purpose device, fully compatible with the 8080 family.
The flPD8253-5 interfaces directly to the busses of the processor as an array of I/O ports.
The flPD8253-5 can generate accurate time delays und~r the control of system software.
The three independent 16-bit counters can be clocked at rates from DC to 4 MHz.
The system software controls the loading and starting of the counters to provide accurate multiple time delays.
The counter output flags the processor at the completion ...

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