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PDF 404344RF Data sheet ( Hoja de datos )

Número de pieza 404344RF
Descripción HD404344
Fabricantes Hitachi 
Logotipo Hitachi Logotipo



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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

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404344RF pdf
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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 k)
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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404344RF arduino
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HD404344R Series/HD404394 Series
HD404394 Series
Item
Power supply
Test
Reset
Oscillator
Port
Interrupt
Stop clear
Serial interface
Timer
A/D converter
Symbol
VCC
GND
TEST
Pin Number
DP-28S/
FP-28DA FP-30D
16 18
11 11
17 19
RESET
OSC1
18
9
20
9
OSC2
D0–D5
10
23–28
10
25–30
R00–R03,
R10–R13,
R20–R23,
R31–R33
INT0
STOPC
1–8,
13–15
19–22
23
27
1–8,
14–16,
21–24
25
29
SCK
SI
SO
TOC
EVNB
Vref
19
20
21
22
23
12
21
22
23
24
25
13
AN1–AN3 13–15 14–16
I/O Function
Applies power voltage
Connects to ground
I Cannot be used in user applications. Connect
this pin to GND.
I Resets the MCU
I Input/output pin for the internal oscillator.
Connect these pins to the ceramic oscillator, or
OSC1 to an external oscillator circuit
O
I/O Input/output pins addressed individually by bits;
pins D1 and D2 can sink 15 mA max.
I/O Four-bit input/output pins. Pins R10–R12 are
NMOS intermediate-voltage open drain pins.
Pins R13–R23 are NMOS standard-voltage open
drain pins which can sink 15 mA max.
I Input pin for external interrupts
I Input pin for transition from stop mode to active
mode
I/O Serial interface clock input/output pin
I Serial interface receive data input pin
O Serial interface transmit data output pin
O Timer output pin
I Event count input pin
Power supply for the internal ladder resistor in
the A/D converter
I Analog input pins for the A/D converter
11

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