
5
MB89810A Series
(Continued)
Pin no.
8
Pin name
P37/PTO2
Circuit type
D
Function
General-purpose I/O port
A pull-up resistor option is provided.
Also serves as the toggle output for the 8-bit PWM timer 2 (PTO2).
General-purpose I/O port
A pull-up resistor option is provided.
General-purpose I/O port
A pull-up resistor option is provided.
Also serves as a 16-bit timer/counter input (EC).
EC input is hysteresis input.
General-purpose I/O port
A pull-up resistor option is provided.
Also serves as the data output 1 for the UART (TXD1).
General-purpose I/O port
A pull-up resistor option is provided.
Also serves as the data input 1 for the UART (RXD1).
RXD1 input is hysteresis input.
General-purpose I/O port
A pull-up resistor option is provided.
Also serves as the clock I/O 1 for the UART (SCL1).
SCL1 input is hysteresis input.
General-purpose I/O port
A pull-up resistor option is provided.
Also serves as the data output 2 for the UART (TXD2).
General-purpose I/O port
A pull-up resistor option is provided.
Also serves as the data input 2 for the UART (RXD2).
RXD2 input is hysteresis input.
General-purpose I/O port
A pull-up resistor option is provided.
Also serves as the clock I/O 2 for the UART (SCL2).
SCL2 input is hysteresis input.
N-channel open-drain I/O ports
A pull-up resistor option is provided only for the MB89816A.
General-purpose I/O ports
A pull-up resistor option is provided.
Also serve as an external interrupt input (INT0 to INT2).
These ports are a hysteresis input type.
General-purpose I/O ports
A pull-up resistor option is provided.
Also serve as an external interrupt input (INT3 to INT7).
These ports are a hysteresis input type.
Power supply pin
Power supply (GND) pin
56
P40
D
58
P41/EC
E
59
P42/TXD1
D
60
P43/RXD1
E
61
P44/SCL1
E
62
P45/TXD2
D
63
P46/RXD2
E
64
P47/SCL2
E
51 to 55
P50 to P54
G
9 to 11
P60/INT0 to
P62/INT2
H
13 to 17
P63/INT3 to
P67/INT7
H
12, 57
25, 50
V
CC
V
SS
–
–