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HD4074654

Hitachi Semiconductor
Part Number HD4074654
Manufacturer Hitachi Semiconductor
Description 4-Bit Single-Chip Microcomputer
Published Jan 9, 2010
Detailed Description HD404654 Series 4-Bit Single-Chip Microcomputer Rev. 7.0 Sept. 1999 Description The HD404654 Series is a member of the ...
Datasheet PDF File HD4074654 PDF File

HD4074654
HD4074654

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 sinks and four 10-mA sources • Three timer/counters • Eight-bit input capture circuit • Two timer outputs (including two PWM outputs) • One event counter input (including one double-edge function) • One clock-synchronous 8-bit serial interface • Voltage comparator (2 channels) • On-chip DTMF generator (fOSC = 400 kHz, 800 kHz, 2 MHz, 3.
58 MHz or 4 MHz) • Built-in oscillators  Main clock: Ceramic or crystal oscillator (an external clock is also possible) • Six interrupt sources  Two by external sources  Four by internal sources • Subroutine stack up to 16 levels, including interrupts HD404654 Series • Two low-power dissipation modes  Standby mode  Stop mode • One external input for transition from stop mode to active mode • Instruction cycle time: 1 µs (fOSC = 4 MHz at 1/4 division ratio)  1/4 or 1/32 division ratio can be selected by hardware • Two operating modes  MCU mode  MCU/PROM mode (HD4074654) Ordering Information Type Product Name Model Name HD404652H HD404652S HD404654 ZTA...


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