Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Hoja De Datos
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AT91SAM9N12-EK
1047
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
48.4
Clock Characteristics
48.4.1 Processor
Clock
48.4.2 System
Clock
The system clock is the maximum clock at which the system is able to run. It is given by the smallest value of the internal
bus clock and EBI clock.
bus clock and EBI clock.
Note:
1.
With DDR2 usage. There is no limitations for LPDDR, SDRAM and mobile SDRAM.
Table 48-4. Power Consumption by Peripheral in Active Mode
Peripheral
Consumption
Unit
PIO Controller
6
µA/MHz
USART
6
ADC
5
TWI
2
SPI
3
UART
3
UHP
5
UDP
5
LCDC
3
PWM
6
HSMCI
3
SSC
5
Timer Counter Channels
12
DMA
1
AES
4
SHA
3
TRNG
1
Table 48-5. Processor Clock Waveform Parameters
Symbol
Parameter
Conditions
Min
Max
Units
1/(t
CPPCK
)
Processor Clock Frequency
V
VDDCORE
min
250
400
MHz
Table 48-6. System Clock Waveform Parameters
Symbol
Parameter
Conditions
Min
Max
Units
1/(t
CPMCK
)
System Clock Frequency
V
VDDCORE
min
125
133
MHz