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SPEAR320 データシート(PDF) 51 Page - STMicroelectronics

部品番号 SPEAR320
部品情報  Embedded MPU with ARM926 core, optimized for factory automation and consumer applications
PDF  73 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SPEAR320 データシート(HTML) 51 Page - STMicroelectronics

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SPEAr320
Timing requirements
Doc ID 16755 Rev 5
51/73
7.3.1
DDR2 read cycle timings
Figure 6.
DDR2 read cycle waveforms
7.3.2
DDR2 write cycle timings
Figure 7.
DDR2 write cycle waveforms
Table 29.
DDR2 read cycle timings
Symbol
Description
Min
Max
Unit
tCK
DDR_MEM_CLKP/CLKN cycle time
3
ns
tDQSQ
DQS to DQ input setup time
0
0.25tCK+0.4
ns
tQH
DQS to DQ input hold time
0.25tCK+0.7
0.5tCK
ns
tDQSQ
tQH
tQH
tDQSQ
tDQSQ
DDR_MEM_DQS
DDR_MEM_DQ
DDR_MEM_CLKP/
DDR_MEM_CLKN
tCK
DDR_MEM_DQS
DDR_MEM_DQ
DDR_MEM_CLKP/
DDR_MEM_CLKN
tDS
tDH
tDH
tDS
tDS
tDH
tDQSS



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