AT90USB1286-16MU ATMEL [ATMEL Corporation], AT90USB1286-16MU Datasheet - Page 402
![no-image](/images/no-image-200.jpg)
AT90USB1286-16MU
Manufacturer Part Number
AT90USB1286-16MU
Description
Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT90USB1286-16MU.pdf
(434 pages)
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30.3
30.4
30.5
402
Maximum speed vs. V
External Clock Drive Waveforms
External Clock Drive
AT90USB64/128
Figure 30-1. External Clock Drive Waveforms
Table 30-1.
Note:
Maximum frequency is depending on V
V
Symbol
CC
1/t
Δ
t
t
t
t
t
CHCX
CLCX
CLCH
CHCL
CLCL
t
CLCL
CLCL
curve is linear between 2.7V < V
All DC Characteristics contained in this datasheet are based on simulation and characterization of
other AVR microcontrollers manufactured in the same process technology. These values are pre-
liminary values representing design targets, and will be updated after characterization of actual
silicon.
CC
Parameter
Oscillator
Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period
from one clock
cycle to the next
External Clock Drive
V
IL1
V
IH1
V
Min.
200
200
500
CC
0
=1.8-5.5V
CC
CC.
Max.
< 4.5V.
2.0
2.0
2
2
As shown in
Min.
V
125
50
50
0
CC
=2.7-5.5V
Figure
Max.
1.6
1.6
8
2
30-2, the Maximum Frequency vs.
V
Min.
62.5
25
25
CC
0
=4.5-5.5V
Max.
0.5
0.5
16
2
Units
MHz
7593A–AVR–02/06
ns
ns
ns
μs
μs
%
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