
MB90800 Series
10
(Continued)
Pin No.
* : For the circuit type, see section “
I
I/O CIRCUIT TYPE”.
Pin Name
Circuit
Type*
Status/function
at reset
Description
QFP
49
SDA
H
Port input
(High-Z)
Data input/output pin of I
2
C Interface.
This function is enabled when the operation of the
I
2
C interface is permitted. While the I
2
C interface is
running, the port must be set for input use.
P74
General purpose input/output port.
(N-ch open drain)
SC2
Serial clock input pin of serial I/O channel 2.
Valid when serial clock output of serial I/O channel 2
is enabled.
50
SCL
H
Clock input/output pin of I
2
C Interface.
This function is enabled when the operation of the
I
2
C interface is permitted. While the I
2
C interface is
running, the port must be set for input use.
P75
General purpose input/output port.
(N-ch open drain)
SO2
Serial data output pin of serial I/O channel 2.
Valid when serial data output of serial I/O channel 2
is enabled.
55 to 57
V0 to V2
J
LCD drive power
supply input
LCD controller/driver.
Reference power terminals of LCD controller/driver.
P80 to P82
General purpose input/output port.
59, 60
COM0,
COM1
D
LCD COM
output
A common output terminal of the LCD controller/
driver.
61, 62
P83, P84
E
Port input
(Hi-Z)
General purpose input/output port.
COM2,
COM3
A common output terminal of the LCD controller/
driver.
32
AVCC
C
Power supply
A/D converter exclusive power supply input pin.
35
AVSS
C
A/D converter-exclusive GND power supply pin.
58
V3
J
LCD controller/driver
Reference power terminals of LCD controller/driver.
15, 65, 90
VCC
These are power supply input pins.
16, 44,
66, 91
VSS
GND power supply pin.