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STR720 データシート(PDF) 398 Page - STMicroelectronics

部品番号 STR720
部品情報  ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES
PDF  401 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STR720 データシート(HTML) 398 Page - STMicroelectronics

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STR720 - ELECTRICAL CHARACTERISTICS
398/401
In figure 86 a sample of 4-beat burst read access is depicted, to show how access gets more
efficient in the case of a burst read. The timing parameters of burst read access are the same
of single read access.
Figure 86. SDRAM Burst Read Access
delay
RAS-CAS
latency
CAS
MICLK
MIA[13:11]
Bank
MIA[10:0]
Row
Col0
MCS[x]
MISA / RAS
MIAA / CAS
MID[32:0]
Data0
MIWE
Col1
Col2
Col3
Data1
Data2
Data3
Note: this diagram shows the timing with RAS-CAS delay, CAS latency set to 1 wait-state and no precharge delay.
Activate
Bank
Read
Precharge
Bank
Read
Read
Read



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