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SPEAR320 数据表(PDF) 52 Page - STMicroelectronics

部件名 SPEAR320
功能描述  Embedded MPU with ARM926 core, optimized for factory automation and consumer applications
PDF  73 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

SPEAR320 数据表(HTML) 52 Page - STMicroelectronics

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Timing requirements
SPEAr320
52/73
Doc ID 16755 Rev 5
7.3.3
DDR2 command timings
Figure 8.
DDR2 command waveforms
Table 30.
DDR2 write cycle timings
Symbol
Description
Min
Max
Unit
tDQSS
Positive DQS latching edge to associated CK edge
-0.5
0.5
ns
tDS
DQ & DQM output setup time relative to DQS
0
0.25tCK – 0.76
ns
tDH
DQ & DQM output hold time relative to DQS
0
0.25tCK – 0.84
ns
Table 31.
DDR2 command timings
Symbol
Description
Min
Max
Unit
tIS
Address and control output setup time
0
0.5tCK – 0.5
ns
tIH
Address and control output hold time
0
0.5tCK – 0.59
ns
tIS
tIH
CLK
ADDRESS AND
COMMANDS



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