Atmel AVR ATtiny10 Series - External Clock Drive Waveforms

ATtiny10/11/12
53
External Clock Drive Waveforms
Figure 33. External Clock
Note: R should be in the range 3-100 kΩ, and C should be at least 20 pF. The C values given in the table includes pin capacitance.
This will vary with package type.
External Clock Drive ATtiny10/11
Symbol Parameter
V
CC
= 2.7V to 4.0V V
CC
= 4.0V to 5.5V
UnitsMinMaxMinMax
1/t
CLCL
Oscillator Frequency0206MHz
t
CLCL
Clock Period 500 167 ns
t
CHCX
High Time 200 67 ns
t
CLCX
Low Time 200 67 ns
t
CLCH
Rise Time 1.6 0.5 µs
t
CHCL
Fall Time 1.6 0.5 µs
External Clock Drive ATtiny12
Symbol Parameter
V
CC
= 1.8V to 2.7V V
CC
= 2.7V to 4.0V V
CC
= 4.0V to 5.5V
UnitsMin Max Min Max Min Max
1/t
CLCL
Oscillator Frequency010408MHz
t
CLCL
Clock Period 1000 250 125 ns
t
CHCX
High Time 400 100 50 ns
t
CLCX
Low Time 400 100 50 ns
t
CLCH
Rise Time 1.6 1.6 0.5 µs
t
CHCL
Fall Time 1.6 1.6 0.5 µs
Table 29. External RC Oscillator, Typical Frequencies
R [kΩ]C [pF] f
100 70 100 kHz
31.5 20 1.0 MHz
6.5 20 4.0 MHz
VIL1
VIH1