參數(shù)資料
型號: MB90678PF
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, MROM, 16 MHz, MICROCONTROLLER, PQFP100
封裝: PLASTIC, QFP-100
文件頁數(shù): 80/124頁
文件大?。?/td> 2584K
代理商: MB90678PF
MB90670/675 Series
80
(2) Specification for Power-on Reset
(AV
SS
= V
SS
= 0.0 V, T
A
= –40
°
C to +85
°
C)
Value
Unit
Min.
Max.
30
ms
* :V
CC
must be kept lower than 0.2 V before power-on.
Notes: The above ratings are values for causing a power-on reset.
When HST is set to “L” level, apply power according to this table to cause a power-on reset irrespective
of whether or not a power-on reset is required.
For built-in resources in the device, re-apply power to the resources to cause a power-on reset.
There are internal registers which can be initialized only by a power-on reset. Apply power according to
this rating to ensure initialization of the registers.
Parameter
Symbol
Pin name Condition
Remarks
Power supply rising time
t
R
V
CC
*
Due to repeated
operations
Power supply cut-off time
t
OFF
V
CC
1
ms
V
CC
t
OFF
0.2 V
2.7 V
0.2 V
0.2 V
t
R
RAM data retained
V
SS
Sudden changes in the power supply voltage may cause a power-on reset.
To change the power supply voltage while the device is in operation, it is recommended to raise the voltage
smoothly to suppress fluctuations as shown below.
Main power
supply voltage
Sub power supply voltage
It is recommended to keep the rising
speed of the supply voltage at 50 mV/ms
or slower.
V
CC
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