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PCIMX258CJM4A Datasheet(PDF) 70 Page - Freescale Semiconductor, Inc

Part # PCIMX258CJM4A
Description  i.MX25 Applications Processor for Consumer and Industrial Products
PDF  144 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

PCIMX258CJM4A Datasheet(HTML) 70 Page - Freescale Semiconductor, Inc

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i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 3
70
Freescale Semiconductor
Figure 38. WEIM Bus Timing Diagram
Table 54. WEIM Bus Timing Parameters1
ID
Parameter
Min.
Max.
Unit
WE1
BCLK cycle time2
14.5
—
ns
WE2
BCLK low-level width2
7—
ns
WE3
BCLK high-level width2
7—
ns
WE4
Clock fall to address valid
15
21
ns
WE5
Clock rise/fall to address invalid
22
25
ns
WE6
Clock rise/fall to CSx_B valid
15
19
ns
WE7
Clock rise/fall to CSx_B invalid
3.3
5
ns
WEIM Output Timing
WEIM Input Timing
WE4
Address
CSx_B
RW_B
OE_B
BCLK
EBy_B
LBA_B
Output Data
...
WE5
WE6
WE7
WE8
WE9
WE10
WE11
WE12
WE13
WE14
WE15
WE16
WE17
WE3
WE2
WE1
Input Data
ECB_B
DTACK_B
BCLK
WE20, WE21
WE18, WE19
WE24, WE25
WE22, WE23
WE27
WE26



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