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參數(shù)資料
| 型號： | MB89121 |
| 廠商： | Fujitsu Limited |
| 英文描述： | 8-Bit Proprietary Microcontroller(8位專用微控制器) |
| 中文描述： | 8位微控制器專利（8位專用微控制器） |
| 文件頁數(shù)： | 6/49頁 |
| 文件大?。?/td> | 604K |
| 代理商： | MB89121 |
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6
MB89120/120A Series
I
PIN DESCRIPTION
(Continued)
Pin no.
Pin name
Circuit type
Function
5
X0
A
Main clock crystal oscillator pins (max. 4.2 MHz)
6
X1
8
X0A
B
Subclock crystal oscillator pins (for 32.768 kHz)
9
X1A
3
MOD0
C
Operation mode select pins
Connect these pins directly to V
SS
.
4
MOD1
2
RST
D
Reset I/O pin
This port is of N-ch open-drain output type with pull-up
resistor and a hysteresis input type. The internal circuit
is initialized by the input of “L”. “L” is output from this pin
by an internal reset source as optional setting.
27 to 34
P07/(INT27) to
P00/(INT20)
I
General-purpose I/O ports
On the MB89120A series, these pins also serve as
external interrupt input.
External interrupt input is hysteresis input.
18, 20 to 26
P17 to P10
E
General-purpose I/O ports
10 to 17
P27 to P20
G
General-purpose output-only ports
42
P30/SCK
F
General-purpose I/O port
Also serves as clock I/O for the 8-bit serial I/O interface.
This port is of hysteresis input type.
41
P31/SO
F
General-purpose I/O port
Also serves as a serial I/O data output. This port is of
hysteresis input type.
40
P32/SI
F
General-purpose I/O port
Also serves as a serial I/O data input. This port is of
hysteresis input type.
39
P33/EC/SCO
F
General-purpose I/O port
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.
38
P34/TO/INT0
F
General-purpose I/O port
Also serves as the overflow output and external
interrupt input for the 8-bit timer/counter. This port is of
hysteresis input type.
36,
37
P36/INT2,
P35/INT1
F
General-purpose I/O ports
Also serve as an external interrupt input. These ports
are of hysteresis input type.
35
P37/BZ/(RCO)
F
General-purpose I/O port
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.
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| MB89121PFM | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
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