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參數(shù)資料
| 型號(hào)： | MB90P214B |
| 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)： | 64/99頁(yè) |
| 文件大小： | 932K |
| 代理商： | MB90P214B |
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MB90210 Series
64
(5) Power-on Reset/Power Supply Specifications
Single-chip mode MB90214/P214B/W214B : (V
CC
= +4.5 V to +5.5 V, V
SS
= 0.0 V, T
A
= –40
°
C to +105
°
C)
MB90P214A/W214A
: (V
CC
= +4.5 V to +5.5 V, V
SS
= 0.0 V, T
A
= –40
°
C to +85
°
C)
External bus mode
: (V
CC
= +4.5 V to +5.5 V, V
SS
= 0.0 V, T
A
= –40
°
C to +70
°
C)
* :Before the power rising, V
CC
must be less than +0.2 V.
Notes:
The above specifications are for the power-on reset.
When HST = L, always apply power-on reset using these specifications, regardless of whether or not
the power-on reset is needed.
There are some internal registers (such as STBYC) which are only initialized by the power-on reset. If
this type of initialization is required, apply power according to these specifications.
Caution on switching power supply
Abrupt change of supply voltage may initiate power-on reset, even if the above requirements are not met.
It is, therefore, recommended to power up gradually during the instantaneous change of power supply as shown
in the figure below.
Parameter
Symbol
Pin
name
Condition
Value
Unit
Remarks
Min.
Typ.
Max.
Power supply rising time
t
R
V
CC
—
—
—
30
ms
*
Power supply cut-off time
t
OFF
V
CC
—
1
—
—
ms
t
R
0.2 V
0.2 V
4.5 V
V
CC
t
OFF
V
SS
Main power
supply voltage
Subpower
supply voltage
The rising edge should be 50 mV/ms or less.
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