IDT7006S Integrated Device Technology, IDT7006S Datasheet - Page 11

• Manufacturer Part Number: IDT7006S
• Description: High-speed 16k X 8 Dual-port Static Ram
• Manufacturer: Integrated Device Technology

IDT7006S/L
HIGH-SPEED 16K x 8 DUAL-PORT STATIC RAM
TIMING WAVEFORM OF SEMAPHORE READ AFTER WRITE TIMING, EITHER SIDE
NOTES:
1.
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. Port “B” is the opposite from port “A”.
3. This parameter is measured from R/
4. If t
CE
OR
SPS
= V
= D
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
OL
for the duration of the above timing (both write and read cycle).
A
VALID" represents all I/O's (I/O
= V
SEM
R/
0
-A
I/O
OE
W
IL
2
,
CE
R
=
CE
SIDE
SIDE
L
= V
t
IH
VALID ADDRESS
AS
(2)
(2)
, Semaphore Flag is released from both sides (reads as ones from both sides) at cycle start.
t
W
AW
“A”
“B”
"A"
Write Cycle
or
t
0
t
EW
-I/O
WP
SEM
A
A
0"A"
0"B"
7
DATA
) equal to the semaphore value.
SEM
SEM
VALID
"A"
R/
R/
-A
-A
t
W
W
t
DW
going High to R/
WR
2"A"
2"B"
"A"
"A"
"B"
"B"
IN
t
DH
t
SWRD
MATCH
W
"B"
6.07
MATCH
VALID ADDRESS
t
SOP
or
Read Cycle
SEM
t
SAA
"B"
t
ACE
going High.
t
t
SPS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
AOE
DATA
VALID
(1,3,4)
OUT
(2)
t
OH
2739 drw 12
2739 drw 11
(1)
11