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HD4074344 Datasheet, PDF (10/100 Pages) Hitachi Semiconductor – 4-bit microcomputers | |||
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HD404344R Series/HD404394 Series
Pin Description
HD404344R Series, HD4074344
Item
Power supply
Test
Reset
Oscillator
Port
Interrupt
Stop clear
Serial interface
Timer
A/D converter
Pin Number
DP-28S/
Symbol FP-28DA FP-30D Chip I/O Function
VCC
16
GND
11
18
14, 15
11
8, 9
Applies power voltage
Connects to ground
TEST
17
19
16
I Cannot be used in user applications.
Connect this pin to GND.
RESET 18
20
17
I Resets the MCU
OSC1
9
9
6
I Input/output pins for the internal
oscillator. Connect these pins to the
ceramic oscillator, or OSC1 to an external
oscillator circuit.
OSC2
D0âD5
10
23â28
10
7
O
25â30 22â27 I/O Input/output pins addressed individually
by bits; pins D1 and D2 can sink 15 mA
max.
R00âR03,
R10âR13,
R20âR23,
R30âR33
INT0
STOPC
1â8,
12â15
19â22
23
27
1â8, 18â21, I/O Four-bit input/output pins.
13â16, 28â30,
21â24 1â5,
Pins R10âR23 can sink 15 mA max.
10â13
25
22
I Input pin for external interrupts
29
26
I Input pin for transition from stop mode to
active mode
SCK
19
21
18
I/O Serial interface clock input/output pin
SI
20
22
19
I Serial interface receive data input pin
SO
21
23
20
O Serial interface transmit data output pin
TOC
22
24
21
O Timer output pin
EVNB
23
25
22
I Event count input pin
AN0âAN3 12â15 13â16 10â13 I Analog input pins for the A/D converter
10
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