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參數(shù)資料
| 型號(hào)： | MB90P224A |
| 廠商： | Fujitsu Limited |
| 英文描述： | 8-Bit Proprietary Microcontroller(8位專(zhuān)用微控制器) |
| 中文描述： | 8位微控制器專(zhuān)利（8位專(zhuān)用微控制器） |
| 文件頁(yè)數(shù)： | 12/105頁(yè) |
| 文件大?。?/td> | 1130K |
| 代理商： | MB90P224A |
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MB90220 Series
12
(Continued)
Pin no.
Pin name
Circuit
type
Function
83
P55
E
General-purpose I/O port
This function is valid in single-chip mode or when WR pin output is
disabled.
WRL
Write strobe output pin for the low-order 8 bits of the data bus
This function is valid in modes where the external bus is enabled and
WR pin output is enabled.
84
P56
E
General-purpose I/O port
This function is valid in single-chip mode. This function is valid in
modes where the external bus is valid.
RD
Read strobe output pin for the data bus
This function is valid in modes where the external bus is enabled.
85
P57
D
General-purpose I/O port
This function is always valid.
When these pins are open in input mode, through current may leak in
stop mode/reset mode, be sure to fix these pins to V
use these pins in input mode.
CC
/V
SS
level to
WI
RAM write disable request input. During this operation, the input may
be used suddenly at any time; therefore, it is necessary to stop output
by other fuctions on this pin, except when using it for output
deliberately.
86
HST
G
Hardware standby input pin
89 to 87
MD0 to MD2
F
Operation mode specification input pins. Connect directly to V
V
SS
.
CC
or
90
RST
K
External reset request input
8, 54, 94
V
CC
Power
supply
Power supply for digital circuitry
33, 63,
91, 119
V
SS
Power
supply
Ground level for digital circuitry
42
AV
CC
Power
supply
Power supply for analog circuitry
When turning this power supply on or off, always be sure to first apply
electric potential equal to or greater than AV
During normal operation AV
CC
should be equal to V
CC
to V
CC
.
.
CC
43
AVRH
Power
supply
Reference voltage input for analog circuitry
When turning this pin on or off, always be sure to first apply electric
potential equal to or greater than AVRH to AV
CC
.
44
AVRL
Power
supply
Reference voltage input for analog circuitry
45
AV
SS
Power
supply
Ground level for analog circuitry
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