SAM9M11_14 Datasheet, PDF (233/1488 Pages) ATMEL Corporation – Atmel | SMART ARM-based Embedded MPU

Figure 21-2. Single Write Access, Row Closed, Low-power DDR1-SDRAM Device
SDCLK
A[12:0]
Row a
col a
COMMAND NOP
BA[1:0]
00
DQS[1:0]
PRCHG
NOP
ACT
NOP
WRITE
NOP
DM[1:0]
D[15:0]
3
0
3
Da
Db
Trp = 2
Trcd = 2
Figure 21-3. Single Write Access, Row Closed, DDR2-SDRAM Device
SDCLK
A[12:0]
Row a
col a
COMMAND
NOP
PRCHG
NOP
ACT
NOP
WRITE
NOP
BA[1:0]
00
DQS[1:0]
DM[1:0]
3
0
3
D[15:0]
Da
Db
Trp = 2
Trcd = 2
SAM9M11 [DATASHEET]
Atmel-6437F-ATARM-SAM9M11-Datasheet_21-Oct-14
233