MCIMX27 Motorola Semiconductor Products, MCIMX27 Datasheet - Page 71

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

Freescale Semiconductor
SD1
SD2
SD3
SD4
SD5
SD6
SD7
SD8
ID
SDCLK
SDCLK
ADDR
DQM
RAS
CAS
WE
DQ
CS
SDRAM clock low-level width
SDRAM clock cycle time
SDRAM clock high-level width
CS, RAS, CAS, WE, DQM, CKE setup time
CS, RAS, CAS, WE, DQM, CKE hold time
Address setup time
Address hold time
SDRAM access time
SD4
SD6
SD4
ROW/BA
Table 36. DDR/SDR SDRAM Read Cycle Timing Parameters
SD5
Figure 36. SDRAM Read Cycle Timing Diagram
i.MX27 Data Sheet, Advance Information, Rev. 0.1
SD5
SD7
Preliminary—Subject to Change Without Notice
SD10
Parameter
SD4
COL/BA
SD4
SD4
SD5
SD5
SD5
SD8
Note: CKE is high during the read/write cycle.
Data
SD1
SD9
SD3
SD2
Symbol
tCMS
tCMH
tCH
tCK
tAS
tAH
tAC
tCL
Min
3.4
3.4
7.5
2.0
1.8
2.0
1.8
—
Signal Descriptions
Max
6.47
4.1
4.1
—
—
—
—
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
71