MB89990 データシートの表示（PDF） - Fujitsu
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コンポーネント説明
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MB89990 Datasheet PDF : 42 Pages
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MB89990 Series
s PIN DESCRIPTION
Pin no.
SOP*1,
SH-DIP*2
MQFP*3
7
31
8
32
5
29
Pin name
X0
X1
TEST
6
30
RST
24,
25,
26,
27
1 to 4
17
12,
13,
23,
24
25 to 28
P00/INT20,
P01/INT21,
P02/INT22,
P03/INT23
P04/INT24 to
P07/INT27
5
P30
16
4
P31
15
3
P32
14
2
P33/EC
13
1
P34/TO/INT10
12,
48, P35/INT11,
11
34
P36/INT12
*1: FPT-28P-M17
*2: DIP-28P-M03
*3: MQP-48C-P01
Circuit type
Function
A
Clock oscillation pins
B
Test input pin
This pin is connected directly to VSS.
C
Reset I/O pin
This pin consists of an N-ch open-drain output with
a pull-up resistor and hysteresis input.
A low level is output from this pin by internal source.
The internal circuit is initialized at the input of a low
level.
G
General-purpose I/O ports
Also serve as external interrupt input pins.
External interrupt input is hysteresis input type.
D
General-purpose I/O ports
Also serve as external interrupt input.
External interrupt input is hysteresis input type.
D
General-purpose I/O port
Also serves as a serial I/O clock I/O.
The serial I/O clock input is hysteresis input type
with a built-in noise filter.
E
General-purpose I/O port
Also serves as a serial I/O data output pin.
D
General-purpose I/O port
Also serves as a serial I/O data input pin.
The serial I/O data input is hysteresis input type
with a built-in noise filter.
D
General-purpose I/O port
Also serves as an external clock input pin for the 8-
bit timer/counter.
External clock input of the 8-bit timer/counter is
hysteresis input type with a built-in noise filter.
D
General-purpose I/O port
Also serves as the overflow output and external
interrupt input for the 8-bit timer/counter.
External interrupt input is hysteresis input type with
a built-in noise filter.
D
General-purpose I/O port
Also serve as external interrupt input pins.
External interrupt input is hysteresis input type with
a built-in noise filter.
(Continued)
7
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