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| 型号： | 7007L35PF |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | SRAM |
| 英文描述： | 32K X 8 DUAL-PORT SRAM, 35 ns, PQFP80 |
| 封装： | 14 X 14 MM, 1.40 MM HEIGHT, GREEN, TQFP-80 |
| 文件页数： | 4/21页 |
| 文件大小： | 168K |
| 代理商： | 7007L35PF |
IDT7007S/L
High-Speed 32K x 8 Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
12
Timing Waveform of Semaphore Read after Write Timing, Either Side(1)
NOTES:
1. DOR = DOL = VIL,
CER = CEL = VIH.
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/
WA or SEMA going HIGH to R/WB or SEMB 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.
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).
SEM
2940 drw 11
tAW
tEW
DATA0
VALID ADDRESS
tSAA
R/
W
tWR
tOH
tACE
VALID ADDRESS
DATAIN VALID
DATAOUT
VALID(2)
tDW
tWP
tDH
tAS
tSWRD
tAOE
tSOP
Read Cycle
Write Cycle
A0-A2
OE
tSOP
SEM"A"
2940 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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