MB89143A/144A
(Continued)
Pin no.
SDIP*
44
Pin name
P31/INT1
45
P30/INT0
1
BZ
19 to 26,
11 to 18,
2 to 9
10
64
32
63
62
P47 to P40,
P57 to P50,
P67 to P60
N.C.
VCC
VSS
AVR
AVSS
* : DIP-64P-M01
Circuit type
Function
E
General-purpose I/O port
This port is an N-ch open-drain outupt and hysteresis
input type. Also serves as an external interrupt. The
interrupt input is a hysteresis input type and with a built-in
noise canceller.
I
General-purpose I/O port
This port is a hysteresis input type. Also serves as an
external interrupt. The interrupt input is a hysteresis input
type and with a built-in noise canceller.
G
Buzzer output-only pin
P-ch high-voltage open-drain output port
G
P-ch high-voltage open-drain output port
—
Be sure to leave them open.
—
Power supply pin
Also serves as an A/D converter power supply.
—
Power supply (GND) pin
—
A/D converter reference voltage input pin
—
A/D converter power supply pin
Use this pin at the same voltage as VSS.
8