MCIMX27 Motorola Semiconductor Products, MCIMX27 Datasheet - Page 73

• Manufacturer Part Number: MCIMX27
• Manufacturer: Motorola Semiconductor Products

Freescale Semiconductor
SD11
SD12
SD1
SD2
SD3
SD4
SD5
SD6
SD7
ID
SDCLK
SDCLK
ADDR
DQM
RAS
CAS
WE
DQ
CS
SDRAM clock high-level width
SDRAM clock low-level width
SDRAM clock cycle time
CS, RAS, CAS, WE, DQM, CKE setup time
CS, RAS, CAS, WE, DQM, CKE hold time
Address setup time
Address hold time
Precharge cycle period
Active to read/write command delay
SD4
SD6
BA
Figure 37. SDR SDRAM Write Cycle Timing Diagram
Table 37. SDR SDRAM Write Timing Parameters
i.MX27 Data Sheet, Advance Information, Rev. 0.1
SD5
Preliminary—Subject to Change Without Notice
SD7
1
Parameter
SD11
1
ROW / BA
SD12
SD1
SD3
SD4
SD13
Symbol
tCMH
tCMS
tRCD
tCH
tCK
tAS
tAH
tRP
tCL
SD4
SD4
COL/BA
SD2
DATA
SD5
SD5
SD5
SD14
Min
1.8
3.4
3.4
7.5
2.0
1.8
2.0
1
1
Signal Descriptions
Max
4.1
4.1
—
—
—
—
—
4
8
clock
clock
Unit
ns
ns
ns
ns
ns
ns
ns
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