IDT70V07 Integrated Device Technology, IDT70V07 Datasheet - Page 10

• Manufacturer Part Number: IDT70V07
• Description: 32k X 8 3.3v Dual-port
• Manufacturer: Integrated Device Technology

Timing Waveform of Semaphore Read after Write Timing, Either Side
NOTES:
1. CE = V
2. “DATA
Timing Waveform of Semaphore Write Contention
NOTES:
1. D
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
4. If t
IDT70V07S/L
High-Speed 32K x 8 Dual-Port Static RAM
OR
SPS
= D
DATA
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.
OUT
IH
A
OL
SEM
for the duration of the above timing (both write and read cycle).
R/W
0
VALID” represents all I/O's (I/O
= V
-A
OE
IL
2
0
SIDE
SIDE
, CE
R
= CE
(2)
(2)
"A"
"B"
L
= V
IH
.
A
A
0"A"
0"B"
"A"
t
VALID ADDRESS
AS
SEM
SEM
R/W
R/W
or SEM
0
-A
-A
-I/O
t
AW
2"A"
2"B"
7
"A"
"A"
"B"
"B"
) equal to the semaphore value.
Write Cycle
"A"
going HIGH to R/W
t
t
EW
WP
DATA VALID
t
IN
DW
t
WR
MATCH
t
DH
B
or SEM
MATCH
t
10
"B"
SWRD
t
going HIGH.
SOP
VALID ADDRESS
t
t
SOP
Read Cycle
SPS
t
SAA
Industrial and Commercial Temperature Ranges
t
t
AOE
ACE
DATA
(1,3,4)
VALID
2943 drw 12
OUT
(2)
t
OH
2943 drw 11
(1)