Description
The HD404459 Series is a member of the 4-bit HMCS400-series microcomputers with large-capacity memory and architecture providing high program productivity.
Each microcomputer has a 32-kHz oscillator for clock, low-voltage (1.8 V) operating mode, and four low-power dissipation modes.
Features
- 8,192-word × 10-bit ROM (HD404458) 16,384-word × 10-bit ROM (HD404459 and HD4074459).
- 512-digit × 4-bit RAM (HD404458) 768-digit × 4-bit RAM (HD404459 and HD4074459).
- 56 I/O pins, including seven input pins.
- Four timer/counters.
- 1-channel × 8-bit input capture circuit.
- Three timer outputs (including two PWM outputs).
- Two event counter inputs (including one double-edge function).
- 8-bit clock-synchronous serial interface.
HD404459 Datasheet
