參數(shù)資料
型號： HCD40C4344R
廠商： Hitachi,Ltd.
英文描述： 4-bit HMCS400-series microcomputer(4位單片微計算機)
中文描述： 4位HMCS400系列微電腦（4位單片微計算機）
文件頁數(shù)： 11/100頁
文件大?。?/td> 610K
代理商： HCD40C4344R
HD404344R Series/HD404394 Series
11
HD404394 Series
Pin Number
Item
Symbol
DP-28S/
FP-28DA FP-30D
I/O
Function
Power supply
V
CC
GND
16
18
Applies power voltage
11
11
Connects to ground
Test
TEST
17
19
I
Cannot be used in user applications. Connect
this pin to GND.
Reset
RESET
18
20
I
Resets the MCU
Oscillator
OSC
1
9
9
I
Input/output pin for the internal oscillator.
Connect these pins to the ceramic oscillator, or
OSC
1
to an external oscillator circuit
OSC
2
D
0
–D
5
10
10
O
Port
23–28
25–30
I/O
Input/output pins addressed individually by bits;
pins D
1
and D
2
can sink 15 mA max.
Four-bit input/output pins. Pins R1
–R1
are
NMOS intermediate-voltage open drain pins.
Pins R1
–R2
are NMOS standard-voltage open
drain pins which can sink 15 mA max.
R0
0
–R0
3
,
R1
0
–R1
3
,
R2
0
–R2
3
,
R3
1
–R3
3
INT
0
STOPC
1–8,
13–15
19–22
1–8,
14–16,
21–24
I/O
Interrupt
23
25
I
Input pin for external interrupts
Stop clear
27
29
I
Input pin for transition from stop mode to active
mode
Serial interface
SCK
19
21
I/O
Serial interface clock input/output pin
SI
20
22
I
Serial interface receive data input pin
SO
21
23
O
Serial interface transmit data output pin
Timer
TOC
22
24
O
Timer output pin
EVNB
23
25
I
Event count input pin
A/D converter
V
ref
12
13
Power supply for the internal ladder resistor in
the A/D converter
AN
1
–AN
3
13–15
14–16
I
Analog input pins for the A/D converter
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