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HD404654

Hitachi Semiconductor
Part Number HD404654
Manufacturer Hitachi Semiconductor
Description 4-Bit Single-Chip Microcomputer
Published Oct 25, 2017
Detailed Description HD404654 Series 4-Bit Single-Chip Microcomputer Rev. 7.0 Sept. 1999 Description The HD404654 Series is a member of the H...
Datasheet PDF File HD404654 PDF File

HD404654
HD404654

Overview
HD404654 Series 4-Bit Single-Chip Microcomputer Rev.
7.
0 Sept.
1999 Description The HD404654 Series is a member of the HMCS400-series of microcomputers designed to increase program productivity with large-capacity memory.
Each microcomputer has a high-precision dual-tone multi-frequency (DTMF) generator, three timers, serial interface, voltage comparator, and input capture circuit.
The HD404654 Series includes three chips: the HD404652 with 2 k-word ROM; the HD404654 with 4 kword ROM; and the HD4074654 with 4 k-word PROM (ZTAT™ version).
The HD4074654 is a PROM version (ZTAT™ microcomputer).
A program can be written to the PROM by a PROM writer, which can dramatically shorten system development periods and smooth the process from debugging to mass production.
(The ZTAT™ version is 27256-compatible.
) ZTAT™ : Zero Turn Around Time.
ZTAT is a trademark of Hitachi Ltd.
Features www.
DataSheet4U.
com • 27 I/O pins and 5 dedicated input pins  10 high-current output pins: Six 15-mA...


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