HD404394 Datasheet PDF - Hitachi Semiconductor
| Part Number | HD404394 | |
| Description | (HD404xxx Series) 4-Bit Microcomputer | |
| Manufacturers | Hitachi Semiconductor | |
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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 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
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HD404344R Series/HD404394 Series
List of Functions (cont)
Mask ROM
ZTAT™
item
HCD40C4344R HD4074344
Operating voltage (V)
2.7 to 5.5
2.7 to 5.5
Instruction cycle time (typ.) 2 µs
(Rf = 20 kΩ)
ROM (Words)
4,096
1 µs
(fosc = 4.0 MHz)
4,096 PROM
RAM (Digits)
256 256
I/O 22 22
High-current
I/O pins (Sink
15 mA max)
10
10
Timer
functions
Free running 2
timer
2
Reload timer 2
2
Event counter 1
1
Watchdog
timer
1
1
Serial interface
1
1
A/D converter
8bit × 4ch
8bit × 4ch
Interrupt External
1
1
Internal
4
4
Low-power modes
2
Stop mode l
lStandby mode
Oscillator
Ceramic
—
oscillation
lRC oscillation
2
l
l
l
—
Package
Chip
DP-28S
FP-28DA
FP-30D
Guaranteed operation
temperature (°C)
+75
–20 to +75
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for HD404394 electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ HD404394.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| HD404391 | The function is (HD404xxx Series) 4-Bit Microcomputer. Hitachi Semiconductor | |
| HD404392 | The function is (HD404xxx Series) 4-Bit Microcomputer. Hitachi Semiconductor | |
| HD404394 | The function is (HD404xxx Series) 4-Bit Microcomputer. Hitachi Semiconductor | |
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