Datasheet

593
SAM7X Series [DATASHEET]
6120K–ATARM–11-Feb-14
38.8 AC Characteristics
38.8.1 Master Clock Characteristics
38.8.2 I/O Characteristics
Criteria used to define the maximum frequency of the I/Os:
output duty cycle (30%-70%)
minimum output swing: 100mV to VDDIO - 100mV
Addition of rising and falling time inferior to 75% of the period
Notes: 1. Pin Group 1 = PB27 to PB30
2. Pin Group 2 = PA4 to PA30 and PB0 to PB30
3. Pin Group 3 = PA0 to PA3
4. V
VDDIO
from 3.0V to 3.6V, maximum external capacitor = 40pF
5. V
VDDIO
from 3.0V to 3.6V, maximum external capacitor = 20pF
Table 38-19. Master Clock Waveform Parameters
Symbol Parameter Conditions Min Max Units
1/(t
CPMCK
) Master Clock Frequency 55 MHz
Table 38-20. I/O Characteristics
Symbol Parameter Conditions Min Max Units
FreqMax
I01
Pin Group 1
(1)
frequency Load: 40 pF
(4)
12.5 MHz
PulseminH
I01
Pin Group 1
(1)
High Level Pulse Width Load: 40 pF
(4)
40 ns
PulseminL
I01
Pin Group 1
(1)
Low Level Pulse Width Load: 40 pF
(4)
40 ns
FreqMax
I02
Pin Group 2
(2)
frequency
Load: 40 pF
(4)
25 MHz
Load: 20 pF
(5)
30 MHz
PulseminH
I02
Pin Group 2
(2)
High Level Pulse Width
Load: 40 pF
(4)
20 ns
Load: 20 pF
(5)
10 ns
PulseminL
I02
Pin Group 2
(2)
Low Level Pulse Width
Load: 40 pF
(4)
20 ns
Load: 20 pF
(5)
10 ns
FreqMax
I03
Pin Group 3
(3)
frequency Load: 40 pF
(4)
30 MHz
PulseminH
I03
Pin Group 3
(3)
High Level Pulse Width Load: 40 pF
(4)
16.6 ns
PulseminL
I03
Pin Group 3
(3)
Low Level Pulse Width Load: 40 pF
(4)
16.6 ns