參數(shù)資料
型號: MB90V390HCR
元件分類: 微控制器/微處理器
英文描述: 16-BIT, 24 MHz, MICROCONTROLLER, CPGA299
封裝: CERAMIC, PGA-299
文件頁數(shù): 46/74頁
文件大?。?/td> 886K
代理商: MB90V390HCR
MB90390 Series
50
4.
AC Characteristics
(1) Clock Timing
(TA
= 40 °C to +85 °C, VCC = 3.5 V to 5.5 V, VSS = AVSS = DVSS = 0.0 V)
Parameter
Symbol
Pin
Value
Unit
Remarks
Min
Typ
Max
Clock frequency
fC
X0, X1
3
8MHz
When using a crystal oscillator
or a ceramic oscillator
X0
3
12
MHz
When using an external clock
Clock cycle time
tCYL
X0, X1
125
333
ns
When using a crystal oscillator
or a ceramic oscillator
X0
83.33
333
ns
When using an external clock
Input clock pulse width
PWH, PWL
X0
20
ns
Duty ratio is about 30
% to
70
%.
Input clock rise and fall time
tCR, tCF
X0
5
ns
When using external clock
Machine clock frequency
fCP
1.5
24
MHz
Except programming or eras-
ing Flash memory. When us-
ing clock modulation, be sure
that the maximum momentary
frequency Fmax does not ex-
ceed 24 MHz. Refer to the
Clock Modulator chapter of
the Hardware Manual.
1.5
20
MHz
When programming or eras-
ing Flash memory. Be sure
that the maximum momentary
frequency Fmax does not ex-
ceed 20 MHz.
Machine clock cycle time
tCP
41.67
666
ns
Except programming or eras-
ing Flash memory.
50
666
ns
When programming or eras-
ing Flash memory.
X0
tCYL
tCF
tCR
0.8 VCC
0.2 VCC
PWH
PWL
Clock Timing
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