參數(shù)資料
型號(hào): MQ80C52TXXX-20:D
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 20 MHz, MICROCONTROLLER, CQFP44
封裝: CERAMIC, QFP-44
文件頁(yè)數(shù): 52/81頁(yè)
文件大?。?/td> 663K
56
ATtiny28L/V
1062F–AVR–07/06
External Clock Drive Waveforms
Figure 41. External Clock
:
Note:
R should be in the range 3 - 100 k
Ω, and C should be at least 20 pF.
VIL1
VIH1
External Clock Drive
Symbol
Parameter
VCC = 1.8V to 2.7V
VCC = 2.7V to 4.0V
VCC = 4.0V to 5.5V
Units
MinMax
1/tCLCL
Oscillator Frequency
0.0
1.2
0.0
4.0
0.0
4.0
MHz
tCLCL
Clock Period
833.0
250.0
ns
t
CHCX
High Time
333.0
100.0
ns
tCLCX
Low Time
333.0
100.0
ns
tCLCH
Rise Time
1.6
0.5
s
t
CHCL
Fall Time
1.6
0.5
s
Table 25. External RC Oscillator, Typical Frequencies
R [k
Ω]C [pF]
f
100.0
70.0
100.0 kHz
31.5
20.0
1.0 MHz
6.5
20.0
4.0 MHz
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