MB89490 Series
■ PIN DESCRIPTION
Pin number
I/Ocircuit
type
MQFP*1/
QFP*2
Pin name
Function
LQFP*3
99
98
49
48
96
95
46
45
X0
X1
Connection pins for a crystal or other oscillator circuit.
An external clock can be connected to X0. In this case, leave
X1 open.
A
A
X0A
X1A
Connection pins for a crystal or other oscillator circuit.
An external clock can be connected to X0A. In this case, leave
X1A open.
Input pin for setting the memory access mode.
Connect directly to VSS.
97
94
MOD0
B
J
95, 94
92, 91
P84, P83
General-purpose CMOS input port.
Reset I/O pin. The pin is an N-ch open-drain type with pull-up
resistor and hysteresis input. The pin outputs an “L” level when
an internal reset request is present. Inputting an “L” level initial-
izes internal circuits.
96
93
RST
C
2 to 9
99 to 6
P00 to P07
D
E
General-purpose CMOS I/O port.
P10/INT00
to
P17/INT07
General-purpose CMOS I/O port.
The pin is shared with external interrupt 0 input.
10 to 17 7 to 14
General-purpose CMOS I/O port.
The pin is shared with 8/16-bit timer/counter 00 and 01 output.
18
19
15
16
P20/TO0
P21/RMC
F
E
General-purpose CMOS I/O port.
The pin is shared with remote receiver input.
General-purpose CMOS I/O port.
The pin is shared with 8/16-bit timer/counter 00 and 01 input.
20
21
22
17
18
19
P22/EC0
P23
E
F
F
General-purpose CMOS I/O port.
General-purpose CMOS I/O port.
The pin is shared with 8/16-bit timer/counter 10 and 11 output.
P24/TO1
General-purpose CMOS I/O port.
The pin is shared with 8/16-bit timer/counter 10 and 11 input.
23
24
25
20
21
22
P25/EC1
P26/PWM0
P27/PWM1
E
F
F
General-purpose CMOS I/O port.
The pin is shared with PWM0 output.
General-purpose CMOS I/O port.
The pin is shared with PWM1 output.
P30/AN0/INT10
to
P37/AN7/INT17
General-purpose CMOS I/O port.
The pin is shared with external interrupt 1 input and A/D
converter input.
32 to 39 29 to 36
40 to 45 37 to 42
G
P40 to P45
H
H
General-purpose N-ch open-drain I/O port.
General-purpose N-ch open-drain I/O port.
The pin is shared with I2C clock I/O.
46
43
P46/SCL
(Continued)
9