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404344RF

Hitachi
Part Number 404344RF
Manufacturer Hitachi
Description HD404344
Published Jun 15, 2006
Detailed Description www.DataSheet4U.com HD404344R Series/HD404394 Series Rev. 7.0 Sept. 1999 Description The HD404344R series and HD404394...
Datasheet PDF File 404344RF PDF File

404344RF
404344RF

Overview
www.
DataSheet4U.
com 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 ZTAT ™ microcomputers.
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 ww w.
D a taS hee t4U .
co m www.
DataSheet4U.
com 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 ...


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