MB89120 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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MB89120 Datasheet PDF : 47 Pages
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MB89120/120A Series
s PIN DESCRIPTION
Pin no.
5
6
8
9
3
4
Pin name
X0
X1
X0A
X1A
MOD0
MOD1
2
RST
27 to 34
P07/ (INT27) to
P00/ (INT20)
18, 20 to 26
10 to 17
P17 to P10
P27 to P20
42
P30/SCK
41
P31/SO
40
P32/SI
39
P33/EC/SCO
38
P34/TO/INT0
36,
P36/INT2,
37
P35/INT1
35
P37/BZ/ (RCO)
Circuit type
Function
A
Main clock crystal oscillator pins (max. 4.2 MHz)
B
Subclock crystal oscillator pins (for 32.768 kHz)
C
Operation mode select pins
Connect these pins directly to VSS.
Reset I/O pin
This port is of N-ch open-drain output type with pull-up re-
D
sistor and a hysteresis input type. The internal circuit is ini-
tialized by the input of “L”. “L” is output from this pin by an
internal reset source as optional setting.
General-purpose I/O ports
I
On the MB89120A series, these pins also serve as exter-
nal interrupt input.
External interrupt input is hysteresis input.
E
General-purpose I/O ports
G
General-purpose output-only ports
General-purpose I/O port
F
Also serves as clock I/O for the 8-bit serial I/O interface.
This port is of hysteresis input type.
General-purpose I/O port
F
Also serves as a serial I/O data output. This port is of hys-
teresis input type.
General-purpose I/O port
F
Also serves as a serial I/O data input. This port is of hys-
teresis input type.
General-purpose I/O port
F
Also serves as the external clock input for the 8-bit timer/
counter. This port is of hysteresis input type.
System clock output is optional.
General-purpose I/O port
F
Also serves as the overflow output and external
interrupt input for the 8-bit timer/counter. This port is of
hysteresis input type.
General-purpose I/O ports
F
Also serve as an external interrupt input. These ports are
of hysteresis input type.
General-purpose I/O port
F
Also serves as a buzzer output. This port is of
hysteresis input type. On the MB89120A series, the pin
also serves as a remote control output.
(Continued)
6
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