參數(shù)資料
型號(hào): IDT7007S35PFB
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: DRAM
英文描述: HIGH-SPEED 32K x 8 DUAL-PORT STATIC RAM
中文描述: 32K X 8 DUAL-PORT SRAM, 35 ns, PQFP80
封裝: 14 X 14 MM, 1.40 MM HEIGHT, TQFP-80
文件頁(yè)數(shù): 12/21頁(yè)
文件大小: 257K
代理商: IDT7007S35PFB
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. D
OR
= D
OL
= V
IL
,
CE
R
=
CE
L
= V
IH
.
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 t
SPS
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
= V
IH
for the duration of the above timing (both write and read cycle).
SEM
2940 drw 11
t
AW
t
EW
t
SOP
DATA
0
VALID ADDRESS
t
SAA
R/
W
t
WR
t
OH
t
ACE
VALID ADDRESS
DATA
IN
VALID
DATA
OUT
VALID
t
DW
t
WP
t
DH
t
AS
t
SWRD
t
AOE
t
SOP
Read Cycle
Write Cycle
A
0
-A
2
OE
SEM
"A"
2940 drw 12
t
SPS
MATCH
R/
W
"A"
MATCH
A
0"A"
-A
2"A"
SIDE
"A"
(2)
SEM
"B"
R/
W
"B"
A
0"B"
-A
2"B"
SIDE
"B"
(2)
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