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ATXMEGA8E5 bảng dữ liệu(PDF) 87 Page - ATMEL Corporation

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Giải thích chi tiết về linh kiện  8/16-bit Atmel AVR XMEGA Microcontrollers
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ATXMEGA8E5 bảng dữ liệu(HTML) 87 Page - ATMEL Corporation

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XMEGA E5 [DATASHEET]
Atmel-8153I–AVR-ATxmega8E5-ATxmega16E5-ATxmega32E5_Datasheet–08/2014
Note:
1.
The maximum frequency vs. supply voltage is linear between 1.6V and 2.7V, and the same applies for all other parameters with supply voltage conditions.
Table 36-26. External clock with prescaler (1)for system clock.
Notes:
1.
System Clock Prescalers must be set so that maximum CPU clock frequency for device is not exceeded.
2.
The maximum frequency vs. supply voltage is linear between 1.6V and 2.7V, and the same applies for all other parameters with supply voltage conditions.
36.13.7 External 16MHz Crystal Oscillator and XOSC Characteristics
Table 36-27. External 16MHz crystal oscillator and XOSC characteristics.
tCL
Clock Low Time
VCC = 1.6 - 1.8V
30.0
ns
VCC = 2.7 - 3.6V
12.5
tCR
Rise Time (for maximum frequency)
VCC = 1.6 - 1.8V
10
ns
VCC = 2.7 - 3.6V
3
tCF
Fall Time (for maximum frequency)
VCC = 1.6 - 1.8V
10
ns
VCC = 2.7 - 3.6V
3
Δt
CK
Change in period from one clock cycle to the next
10
%
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
1/tCK
Clock Frequency (2)
VCC = 1.6 - 1.8V
0
90
MHz
VCC = 2.7 - 3.6V
0
142
tCK
Clock Period
VCC = 1.6 - 1.8V
11
ns
VCC = 2.7 - 3.6V
7
tCH
Clock High Time
VCC = 1.6 - 1.8V
4.5
ns
VCC = 2.7 - 3.6V
2.4
tCL
Clock Low Time
VCC = 1.6 - 1.8V
4.5
ns
VCC = 2.7 - 3.6V
2.4
tCR
Rise Time (for maximum frequency)
VCC = 1.6 - 1.8V
1.5
ns
VCC = 2.7 - 3.6V
1.0
tCF
Fall Time (for maximum frequency)
VCC = 1.6 - 1.8V
1.5
ns
VCC = 2.7 - 3.6V
1.0
Δt
CK
Change in period from one clock cycle to the next
10
%
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
Cycle to cycle jitter
XOSCPWR=0
FRQRANGE=0
<10
ns
FRQRANGE=1, 2, or 3
<1
XOSCPWR=1
<1



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