404344RF HD404344 Datasheet

404344RF Datasheet, PDF, Equivalent


Part Number

404344RF

Description

HD404344

Manufacture

Hitachi

Total Page 30 Pages
Datasheet
Download 404344RF Datasheet


404344RF
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HD404344R Series/HD404394 Series
Rev. 7.0
Sept. 1999
Description
The HD404344R series and HD404394 series 4-bit microcomputers are products of the HMCS400 series,
which is designed to make application systems compact while realizing higher performance and increasing
program productivity.
Each microcomputer has an A/D converter, two timers and a serial interface. The HD404344R series
includes the HD404344R with on-chip 4-kword ROM, HD404342R with 2-kword ROM, and HD404341R
with 1-kword ROM. The HD404394 series includes the HD404394 with on-chip 4-kword ROM,
HD404392 with 2-kword ROM, and HD404391 with 1-kword ROM.
The HD4074344 and HD4074394 are the PROM version ZTATmicrocomputers. Programs 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 PROM program specifications are the same
as for the 27256.)
ZTAT: Zero Turn Around Time ZTAT is a Trademark of Hitachi Ltd.
Features
Input/output pins
HD404344R series, HD4074344: 22 pins
(10pins: Large-current I/O pins)
HD404394 series: 21 pins
(3 pins: intermediate-voltage NMOS open drain I/O; 5 pins: NMOS open drain I/O with 15-mA
high-current driver)
Two timer/counters
One timer output
One event counter input (with programmable edge detection)
8-bit clock-synchronous serial interface (1 channel)
On-chip A/D converter
HD404344R series, HD4074344: 8 bit × 4 channel
HD404394 series: 8 bit × 3 channel (with Vref pin)
Built-in oscillator

404344RF
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HD404344R Series/HD404394 Series
HD404344R Series
Ceramic oscillator, CR oscillation, External clock drive is also possible.
HD404394 Series, HD4074344
Ceramic oscillator, External clock drive is also possible.
Five interrupt sources
One by external source (with programmable edge detection)
Four by internal sources
Subroutine stack
Maximum 16 levels including interrupts
Two low-power dissipation modes
Standby mode
Stop mode
One input signal to return from stop mode
Instruction cycle time
1 µs (fOSC = 4 MHz)
2


Features www.DataSheet4U.com HD404344R Series/HD 404394 Series Rev. 7.0 Sept. 1999 Desc ription The HD404344R series and HD4043 94 series 4-bit microcomputers are prod ucts of the HMCS400 series, which is de signed to make application systems comp act while realizing higher performance and increasing program productivity. Ea ch microcomputer has an A/D converter, two timers and a serial interface. The HD404344R series includes the HD404344R with on-chip 4-kword ROM, HD404342R wi th 2-kword ROM, and HD404341R with 1-kw ord ROM. The HD404394 series includes t he HD404394 with on-chip 4-kword ROM, H D404392 with 2-kword ROM, and HD404391 with 1-kword ROM. The HD4074344 and HD4 074394 are the PROM version ZTAT ™ mi crocomputers. Programs can be written t o the PROM by a PROM writer, which can dramatically shorten system development periods and smooth the process from de bugging to mass production. (The PROM p rogram specifications are the same as f or the 27256.) ZTAT ™: Zero Turn Around Time ZTAT is a Trademark .
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