ATmega88PA Automotive Atmel Corporation, ATmega88PA Automotive Datasheet - Page 180
ATmega88PA Automotive
Manufacturer Part Number
ATmega88PA Automotive
Description
Manufacturer
Atmel Corporation
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22.3
22.3.1
Table 22-2.
22.3.2
Figure 22-2. External Clock Drive Waveforms
22.3.3
Table 22-3.
180
Factory
Calibration
User Calibration
Oscillator Jitter
Symbol
1/t
t
t
t
t
t
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
Clock Characterizations
Atmel ATtiny24/44/84 [Preliminary]
Calibrated Internal RC Oscillator Accuracy
External Clock Drive Waveforms
External Clock Drive
Parameter
Clock Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period from one clock cycle to the next
Calibration Accuracy of Internal RC Oscillator
External Clock Drive
Note:
Example: with Oscillator divided by 32, jitter standard deviation will be 32
V
7.3 - 8.1MHz
Frequency
IL1
8.0MHz
8.0MHz
V
IH1
1. The overall jitter increase proportionally to the divider ratio
2.7V - 5.5V
2.7V - 5.5V
V
3V
CC
Min.
100
40
40
V
0
CC
= 2.7 - 5.5V
-40°C - 125°C
Temperature
-40°C - 125°
25°C
Max.
1.6
1.6
10
2
Min.
V
50
20
20
0
Standard Deviation 0.4ns
CC
= 4.5 - 5.5V
Accuracy
Max.
0.4ns = 12.8ns.
0.5
0.5
20
±20%
2
±2%
7701E–AVR–02/11
Units
MHz
ns
ns
ns
µs
µs
%
(1)
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