MB90F654A FUJITSU [Fujitsu Component Limited.], MB90F654A Datasheet - Page 81
MB90F654A
Manufacturer Part Number
MB90F654A
Description
16-bit Proprietary Microcontroller
Manufacturer
FUJITSU [Fujitsu Component Limited.]
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Manufacturer:
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* : When the power rising, V
Notes:
Power supply rising time
Power supply cut-off time
(4) Power on Supply Specifications (Power-on Reset)
Main power supply voltage
V
Sub-power supply voltage
V
CC
SS
The above standards are the values needed in order to activate a power-on reset.
V
Activate a power-on reset by turning on the power supply again this in device.
Parameter
CC
= V
CC
1 = V
V
Abrupt changes in the power supply voltage may cause a power-on reset.
When changing the power supply voltage during operation, suppress variations in the voltage and
ensure that the voltage rises smoothly, as shown in the following figure.
CC
CC
2
CC
t
t
must be less than 0.2 V.
R
OFF
Symbol
V
V
Pin name
CC
CC
0.2 V
2.7 V
t
R
Holding RAM data
Condition
(V
CC
—
—
= 2.7 V to 3.3 V, V
Min.
t
—
MB90650A Series
OFF
1
Value
It is recommended that the rate of
increase in the voltage be kept to
no more than 50 mV/ms.
SS
= 0.0 V, T
Max.
30
—
A
Unit
= –40 C to +85 C)
ms
ms
*
Due to
repeat
operation
Remarks
81
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