ATA5771 ATMEL Corporation, ATA5771 Datasheet - Page 230

• Manufacturer Part Number: ATA5771
• Manufacturer: ATMEL Corporation

Table 20-2.
20.4.2
Table 20-3.
178
Calibration
Method
Factory
Calibration
User
Calibration
Symbol
1/t
t
t
t
t
t
Δ
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
ATtiny24/44/84
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 Characteristics
Fixed frequency within:
Target Frequency
temperature characteristics can be found in
page
Notes:
Figure 20-3. External Clock Drive Waveform
7.3 – 8.1 MHz
8.0 MHz
207.
1. Accuracy of oscillator frequency at calibration point (fixed temperature and fixed voltage).
2. Voltage range for ATtiny24V/44V/84V.
3. Voltage range for ATtiny24/44/84.
V
IL1
V
IH1
Fixed voltage within:
1.8V – 5.5V
2.7V – 5.5V
V
3V
CC
V
Min.
250
100
100
(2)
(3)
CC
0
= 1.8 - 5.5V
Max.
2.0
2.0
4
2
Figure 21-40 on page 207
Fixed temperature
Temperature
-40°C – 85°C
V
within:
Min.
25°C
100
CC
40
40
0
= 2.7 - 5.5V
Max.
1.6
1.6
10
2
Accuracy at given Voltage
V
Min.
CC
50
20
20
0
& Temperature
and
= 4.5 - 5.5V
Figure 21-41 on
±10%
±1%
Max.
0.5
0.5
20
8006G–AVR–01/08
2
(1)
Units
MHz
ns
ns
ns
μs
μs
%