參數(shù)資料
型號: MB89121
廠商: Fujitsu Limited
英文描述: 8-Bit Proprietary Microcontroller(8位專用微控制器)
中文描述: 8位微控制器專利(8位專用微控制器)
文件頁數(shù): 29/49頁
文件大?。?/td> 604K
代理商: MB89121
29
MB89120/120A Series
4. AC Characteristics
(1) Reset Timing
(V
CC
= +5.0 V
±
10%, AV
SS
= V
SS
= 0.0 V, T
A
= –40
°
C to +85
°
C)
Value
* :t
HCYL
is the oscillation cycle (1/F
CH
) input to the X0.
(2) Power-on Reset
(AV
SS
= V
SS
= 0.0 V, T
A
= –40
°
C to +85
°
C)
Value
Unit
Max.
Note: Make sure that power supply rises within the oscillation stabilization time selected.
When the main clock is operating at F
CH
= 3 MHz and the oscillation stabilization time select option has
been set to 2
12
/F
CH
, for example, the oscillation settling time is 1.4 ms and accordingly the maximum value
of power supply rising time is about 1.4 ms.
Keep in mind that rapid changes in power supply voltage may cause a power-on reset. If power supply
voltage needs to be varied in the course of operation, a smooth voltage rise is recommended.
Parameter
Symbol
Condition
Unit
Remarks
Min.
Max.
RST “L” pulse width
t
ZLZH
48 t
HCYL*
ns
Parameter
Symbol
Condition
Remarks
Min.
Power supply rising time
t
R
50
ms
Power-on
reset function
only
Power supply cut-off time
t
OFF
1
ms
Due to
repeated
operations
t
ZLZH
0.2 V
CC
0.2 V
CC
0.8 V
CC
RST
0.2 V
0.2 V
2.0 V
V
CC
0.2 V
t
R
t
OFF
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