參數(shù)資料
型號: PXA270
廠商: Intel Corp.
英文描述: Electrical, Mechanical, and Thermal Specification
中文描述: 電氣,機械和熱規(guī)格
文件頁數(shù): 94/126頁
文件大?。?/td> 1563K
代理商: PXA270
6-30
Electrical, Mechanical, and Thermal Specification
Intel PXA270 Processor
AC Timing Specifications
6.4.4.2
Flash Memory Write Parameters and Timing Diagrams
Table 6-18
lists the AC specification for both burst and non-burst flash writes shown in
Figure 6-19
and, for stacked flash packages
, Figure 6-20
.
Figure 6-18. Synchronous Flash Burst Read Example
Valid Address
Beat 0
Beat1
tCHQV
tffSDOH
tffSDOH
tffSDOH
tffSDIS
tVLQV
tAVCH
SDCLK<0>
nCS<0>
nSDCAS (ADV#)
MA
MD
Table 6-18. Flash Memory AC Specification (Sheet 1 of 2)
Symbols
Parameters
MIN
TYP
MAX
Units
1
Notes
tflashAS
Address setup to nCS assert
1
1
clk_mem
tflashAH
Address hold from nWE de-asserted
1
1
clk_mem
tflashASW
Address setup to nWE asserted
1
3
clk_mem
2
tflashCES
nCS setup to nWE asserted
2
2
clk_mem
tflashCEH
nCS hold from nWE de-asserted
1
1
clk_mem
tflashWL
nWE asserted time
1
MSCx[RDF]+1
31
clk_mem
tflashDSWH
MD/DQM setup to nWE de-asserted
2
MSCx[RDF]+2
32
clk_mem
tflashDH
MD/DQM hold from nWE de-
asserted
1
1
clk_mem
tflashDSOH
MD setup to address valid
1.5
clk_mem
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