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Hitachi Semiconductor - 4-Bit Single-Chip Microcomputer

Numéro de référence HD404612
Description 4-Bit Single-Chip Microcomputer
Fabricant Hitachi Semiconductor 
Logo Hitachi Semiconductor 





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HD404612 fiche technique
HD404618 Series
4-Bit Single-Chip Microcomputer
Rev. 6.0
Sept. 1998
Description
The HD404618 Series is designed with the powerful and efficient architecture of the HMCS400 family.
The MCU incorporates a high-precision dual-tone multifrequency (DTMF) circuit, LCD driver/controller,
voltage comparator, and 32-kHz watch oscillator circuit.
The HD404618 Series includes five chips: the HD404612 with 2-kword ROM; the HD404614 with 4-
kword ROM; the HD404616 with 6-kword ROM; the HD404618 with 8-kword ROM; the HD4074618
with 8-kword PROM.
The HD4074618, incorporating PROM, is a ZTATmicrocomputer that can dramatically shorten system
development periods and smooth the process from debugging to mass production.
ZTAT™ : Zero Turn Around time ZTAT is a trademark of Hitachi Ltd.
Features
2048-word × 10-bit ROM (HD404612)
4096-word × 10-bit ROM (HD404614)
6144-word × 10-bit ROM (HD404616)
8192-word × 10-bit ROM (HD404618, HD4074618)
1184-digit × 4-bit RAM
30 I/O pins
10 high-current output pins
CMOS I/O pin circuit configuration
Input/output pull-up MOS can be selected by software
On-chip DTMF generator
LCD controller/driver (32 segments × 4 commons)
Three timer/counters
Clock-synchronous 8-bit serial interface
Six interrupt sources
Two by external sources
Four by internal sources

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