HD404019RS General Description
HD404019RS Maximum Ratings
HD404019RS Features
` 16,384-word* 10-bit ROM
- Mask ROM: HD404019R, HD40L4019R
- PROM: HD4074019, HD407L4019
` 992-digit *4-bit RAM
` 58 I/O pins, including 26 high-voltage I/O pins (40 V max.)
` Two timer/counters
- 8-bit free-running timer
- 8-bit auto-reload timer/counter
` Clock synchronous 8-bit serial interface
` Five interrupt sources
- Two by external sources
- Two by timer/counters
- One by serial interface
` Subroutine stack, up to 16 levels including interrupts
` Minimum instruction execution time: 0.89 ms
` Low-power dissipation modes
- Standby: Stops instruction execution while allowing clock oscillation and interrupt functions to operate
- Stop: Stops instruction execution and clock oscillation while retaining RAM data
HD404019RS Connection Diagram
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