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參數(shù)資料
| 型號： | MB90P214BPF |
| 廠商： | FUJITSU LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-bit Proprietary Microcontroller |
| 中文描述： | 16-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | PLASTIC, QFP-80 |
| 文件頁數(shù)： | 65/100頁 |
| 文件大?。?/td> | 1689K |
| 代理商： | MB90P214BPF |
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65
MB90210 Series
(5) Power on Supply Specifications (Power-on Reset)
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.
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.
Note: 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
0.2 V
Power-on Reset
V
SS
Main power
supply voltage
Subpower
supply voltage
The rising edge should be 50 mV/ms or less.
Changing Power Supply
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