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IMX27L Datasheet(PDF) 77 Page - Freescale Semiconductor, Inc

Part # IMX27L
Description  Multimedia Applications
PDF  122 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

IMX27L Datasheet(HTML) 77 Page - Freescale Semiconductor, Inc

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Signal Descriptions
i.MX27/i.MX27L Data Sheet, Advance Information, Rev. 1
Freescale Semiconductor
Preliminary—Subject to Change Without Notice
77
Figure 38. SDR SDRAM Write Cycle Timing Diagram
Table 37. SDR SDRAM Write Timing Parameters
ID
Parameter
Symbol
Min
Max
Unit
SD1
SDRAM clock high-level width
tCH
3.4
4.1
ns
SD2
SDRAM clock low-level width
tCL
3.4
4.1
ns
SD3
SDRAM clock cycle time
tCK
7.5
—
ns
SD4
CS, RAS, CAS, WE, DQM, CKE setup time
tCMS
2.0
—
ns
SD5
CS, RAS, CAS, WE, DQM, CKE hold time
tCMH
1.8
—
ns
SD6
Address setup time
tAS
2.0
—
ns
SD7
Address hold time
tAH
1.8
—
ns
SD11
Precharge cycle period1
tRP
1
4
clock
SD12
Active to read/write command delay1
tRCD
1
8
clock
CS
CAS
WE
RAS
ADDR
DQ
DQM
BA
ROW / BA
COL/BA
DATA
SD4
SD4
SD4
SD4
SD5
SD5
SD5
SD5
SD7
SD6
SD12
SD13
SD14
SD11
SDCLK
SD1
SD3
SD2
SDCLK



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