SAM7S256_14 Datasheet, PDF (570/775 Pages) ATMEL Corporation – ARM-based Flash MCU

37.5 PLL Characteristics
Table 37-13. Phase Lock Loop Characteristics
Symbol
Parameter
Conditions
F_OUT
Output Frequency:
SAM7S64/32/312/161/16
00
Field out of CKGR_PLL is:
10
F_OUT
Output Frequency:
SAM7S512/256/128
00
Field out of CKGR_PLL is:
10
F_IN
I_PLL
Note:
Input Frequency
Current Consumption
Active mode
Standby mode
Startup time depends on PLL RC filter. A calculation tool is provided by Atmel.
Min
Typ
Max
Unit
80
160
MHz
150
200
MHz
80
160
MHz
150
180
MHz
1
32
MHz
4
mA
1
µA
37.6 Master Clock Characteristics
Table 37-14. Master Clock Waveform Parameters
Symbol
Parameter
Conditions
Min
1/(t_CPMCK)
Master Clock Frequency
Max
Units
55
MHz
37.7 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
Table 37-15. I/O Characteristics
Symbol
Parameter
FreqMax_I01
Pin Group 1 ⁽¹⁾ frequency
PulseminH_I01 Pin Group 1 ⁽¹⁾ High Level Pulse Width
PulseminL_I01 Pin Group 1 ⁽¹⁾ Low Level Pulse Width
FreqMax_I02
Pin Group 2 ⁽²⁾ frequency
PulseminH_I02 Pin Group 2 ⁽²⁾ High Level Pulse Width
Conditions
3.3V domain ⁽⁴⁾
1.8V domain ⁽⁵⁾
3.3V domain ⁽⁴⁾
1.8V domain ⁽⁵⁾
3.3V domain ⁽⁴⁾
1.8V domain ⁽⁵⁾
3.3V domain ⁽⁴⁾
1.8V domain ⁽⁵⁾
3.3V domain ⁽⁴⁾
1.8V domain ⁽⁵⁾
Min
40
110
40
110
20
36
Max
12.5
4.5
25
14
Units
MHz
MHz
ns
ns
ns
ns
MHz
MHz
ns
ns
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
570