参数资料
型号: MB90F497PFM
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP64
封装: 12 X 12 MM, 0.65 MM PITCH, QFP-64
文件页数: 16/40页
文件大小: 484K
代理商: MB90F497PFM
MB90495 Series
MB90495 Series Data Sheet (Advance Information)
23 / 40
FME EMDC June 19, 2000
14. AC CHARACTERISTICS
14.1 Clock Timing
(TA = –40 to +85
°C, VCC = 5.0 V 10%, VSS = AVSS = 0 V)
*: Frequency deviation indicates the maximum frequency difference from the target frequency when using a multiplied clock.
Parameter
Symbol
Pin
Rated Value
Units
Remarks
Min.
Typ.
Max.
Oscillation frequency
fC
X0, X1
3
16
MHz
fCL
X0A, X1A
32.768
kHz
Oscillation cycle time
tHCYL
X0, X1
62.5
333
ns
tLCYL
X0A, X1A
30.5
s
Frequency deviation with
PLL *
f—
5
%
Input clock pulse width
PWH, PWL
X0
10
ns
Duty ratio is about 30 to
70%.
PWLH,PWLL
X0A
15.2
s
Input clock rise and fall
time
tCR, tCF
X0
5
ns
When using external clock
Machine clock frequency
fCP
1.5
16
MHz
When using main clock
fLCP
8.192
kHz
When using sub-clock
Machine clock cycle time
tCP
62.5
666
ns
When using main clock
tLCP
122.1
s
When using sub-clock
|a|
fO
+a
Central frequency fO
–a
f =
× 100%
tHCYL
PWH
tCF
PWL
tCR
0.8 VCC
0.2 VCC
X0
tLCYL
PWLH
tCF
PWLL
tCR
0.8 VCC
0.2 VCC
X0A
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