參數(shù)資料
型號: MB90F574A
廠商: Fujitsu Limited
英文描述: Octal Bus Transceivers And Registers With 3-State Outputs 24-CFP -55 to 125
中文描述: 16位微控制器專有
文件頁數(shù): 86/135頁
文件大?。?/td> 2504K
代理商: MB90F574A
86
MB90570 Series
(3) Clock Timings
(AV
CC
= V
CC
= 5.0 V
±
10%, AV
SS
= V
SS
= 0.0 V, T
A
= –40
°
C to +85
°
C)
Value
Min.
Typ.
X0, X1
3
X0A, X1A
32.768
X0, X1
62.5
X0A, X1A
30.5
* :The frequency fluctuation rate is the maximum deviation rate of the preset center frequency when the multiplied
PLL signal is locked.
The PLL frequency deviation changes periodically from the preset frequency “(about CLK
×
(1CYC to 50 CYC)”,
thus minimizing the chance of worst values to be repeated (errors are minimal and negligible for pulses with
long intervals).
Parameter
Symbol
Pin name Condition
Unit
Remarks
Max.
16
333
Clock frequency
F
C
F
CL
t
HCYL
t
LCYL
MHz
kHz
ns
μ
s
Clock cycle time
Input clock pulse width
P
WH
,
P
WL
X0
10
ns
Recommend
duty ratio of
30% to 70%
P
WLH
,
P
WLL
t
CR
,
t
CF
X0A
15.2
μ
s
Input clock rising/falling time
X0, X0A
5
ns
External clock
operation
Main clock
operation
Subclock
operation
External clock
operation
Subclock
operation
Internal operating clock
frequency
f
CP
1.5
16
MHz
f
LCP
8.192
kHz
Internal operating clock cycle
time
t
CP
62.5
333
ns
t
LCP
122.1
μ
s
Frequency fluctuation rate
locked
f
5
%
*
α
|
f
O
Center frequency
+
+
α
f
O
α
f = |
×
100 (%)
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