AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 247

• Manufacturer Part Number: AT91SAM9G45-EKES
• Description: KIT EVAL FOR AT91SAM9G45
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91SAM9G45-EKES

• Contents: Board
• Processor To Be Evaluated: SAM9G45
• Data Bus Width: 32 bit
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 50 C
• Minimum Operating Temperature: - 10 C
• Operating Supply Voltage: 1.8 V to 3.3 V
• For Use With/related Products: AT91SAM9G45
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4626953

Figure 22-17. Self Refresh Mode Entry, Timeout = 0
Figure 22-18. Self Refresh Mode Entry, Timeout = 1 or 2
6438F–ATARM–21-Jun-10
COMMAND
COMMAND
DQS[0:1]
DQS[1:0]
BA[1:0]
A[12:0]
DM[1:0]
BA[1:0]
SDCLK
DM[1:0]
D[15:0]
SDCLK
D[15:0]
A[12:0]
CKE
CKE
NOP READ
0
3
NOP READ
0
3
The low-power DDR-SDRAM must remain in self refresh mode for a minimum of TRFC periods
and may remain in self refresh mode for an indefinite period.
The DDR2-SDRAM must remain in self refresh mode for a minimum of TCKE periods and may
remain in self refresh mode for an indefinite period.
BST
BST
NOP
NOP
Da
Da
Db
Db
64 or 128
wait states
PRCHG
PRCHG
NOP
NOP
Trp
Trp
AT91SAM9G45
ARFSH NOP
ARFSH
Enter Self refresh
Mode
Enter Self refresh
Mode
NOP
247