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HD404356 Datasheet, PDF (4/100 Pages) Hitachi Semiconductor – 4-bit HMCS400-Series microcomputer | |||
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HD404358 Series
Pin Description
Item
Power
supply
Test
Symbol
VCC
Pin Number
DP-42S FP-44A I/O
21
16
GND
10
5
TEST
6
1
I
Reset
RESET 7
2
I
Oscillator OSC1
8
3
I
OSC2
9
4
O
Port
D0âD8
22â30 17â21, I/O
23â26
RA1
R00âR13,
R30âR43,
R80âR83
R20âR23
1
2â5,
12â19,
31â38
39â42
39
I
40â43, I/O
7â14
27â34
35â38 I/O
Interrupt INT0, INT1 22, 23 17, 18 I
Stop clear STOPC 26
21
I
Serial
SCK
2
Interface
40
I/O
SI
3
41
I
SO
4
42
O
Timer
TOC
5
43
O
EVNB
24
19
I
Alarm
BUZZ
25
20
O
A/D
AVCC
converter
20
15
AVSS
11
6
AN0âAN7 12â19 7â14 I
Function
Applies power voltage
Connected to ground
Cannot be used in user applications. Connect this pin
to GND.
Resets the MCU
Input/output pin for the internal oscillator. Connect
these pins to the ceramic oscillator or crystal oscillator,
or OSC1 to an external oscillator circuit.
Input/output pins addressed individually by bits; D0âD8
are all standard-voltage I/O pins.
One-bit standard-voltage input port pin
Four-bit input/output pins consisting of standard-voltage
pins
Four-bit input/output pins consisting of intermediate
voltage pins
Input pins for external interrupts
Input pin for transition from stop mode to active mode
Serial interface clock input/output pin
Serial interface receive data input pin
Serial interface transmit data output pin
Timer output pin
Event count input pin
Square waveform output pin
Power supply for the A/D converter. Connect this pin
as close as possible to the VCC pin and at the same
voltage as VCC. If the power supply voltage to be used
for the A/D converter is not equal to VCC, connect a 0.1-
µF bypass capacitor between the AVCC and AVSS pins.
(However, this is not necessary when the AVCC pin is
directly connected to the VCC pin.)
Ground for the A/D converter. Connect this pin as
close as possible to GND at the same voltage as GND.
Analog input pins for the A/D converter
4
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