HD404019R Datasheet, PDF (3/65 Pages) Renesas Technology Corp – CMOS 4-bit single-chip microcomputers

HD404019R Series
Rev. 6.0
Sept. 1998
Description
The HD404019R series are HMCS400-series CMOS 4-bit single-chip microcomputers. Each device
incorporates a ROM, RAM, I/O, serial interface, and two timer/counters, and contains high-voltage I/O
pins including high-current output pins to directly drive fluorescent displays.
The HD404019R series includes four chips. The HD404019R and HD40L4019R are Mask ROM versions.
The HD4074019 and HD407L4019 are PROM versions. The HD40L4019R and HD407L4019 are low-
voltage operation versions.
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 µs
• 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