Hitachi HD4074458
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. The HD404459 Series includes three chips: the HD404458 with an 8-kword ROM; the HD404459 with a 16-kword ROM; and the HD4074459 with a 16-kword PROM (ZTATTM version).| Part No. | HD4074458 |
|---|---|
| Datasheet | HD4074458 Download |
| Manufacturer |  Hitachi |
| Description | MICROCONTROLLER |
| Buy | Stock & Price |
DESCRIPTION
The HD4074459 is a PROM version (ZTATTM microcomputer). A program can be written to the PROM by a PROM writer, thus dramatically shortening system development periods and turnaround time (ZTAT TM versions are 27256-compatible). ZTAT TM: Zero Turn Around Time ZTAT is a trademark of Hitachi, Ltd.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
● Eight wakeup inputs
● Four-channel voltage comparator (external or internal reference power supply can be selected)
● Built-in oscillators Main clock: 4-MHz ceramic or crystal oscillator (an external clock is also possible) Subclock: 32.768-kHz crystal w w .D w t a S a e h t e U 4 .c m o Rev.
