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7005L15PFGB Datasheet(PDF) 11 Page - Integrated Device Technology

Part No. 7005L15PFGB
Description  HIGH-SPEED 8K x 8 DUAL-PORT STATIC RAM
Download  21 Pages
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Maker  IDT [Integrated Device Technology]
Homepage  http://www.idt.com
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7005L15PFGB Datasheet(HTML) 11 Page - Integrated Device Technology

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6.42
IDT7005S/L
High-Speed 8K x 8 Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
11
Timing Waveform of Semaphore Read after Write Timing, Either Side(1)
Timing Waveform of Semaphore Write Contention(1,3,4)
NOTE:
1. CE = VIH for the duration of the above timing (both write and read cycle).
NOTES:
1. DOR = DOL = VIL, CER = CEL = VIH. Semaphore flag is released from both sides (reads as ones from both sides) at cycle start.
2. All timing is the same for left and right ports. Port “A” may be either left or right port. “B” is the opposite from port “A”.
3. This parameter is measured from R/W“A” or SEM“A” going HIGH to R/W“B” or SEM“B” going HIGH.
4. If tSPS is not satisfied, the semaphore will fall positively to one side or the other, but there is no guarantee which side will obtain the flag.
SEM
2738 drw 11
tAW
tEW
tSOP
DATA0
VALID ADDRESS
tSAA
R/
W
tWR
tOH
VALID ADDRESS
DATAIN VALID
DATA OUT
tDW
tWP
tDH
tAS
tSWRD
tAOE
tSOP
Read Cycle
Write Cycle
A0-A2
OE
VALID
tACE
SEM"A"
2738 drw 12
tSPS
MATCH
R/
W"A"
MATCH
A0"A"-A2"A"
SIDE
“A”
(2)
SEM"B"
R/
W"B"
A0"B"-A2"B"
SIDE
“B”
(2)


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