IDT70V38L15PFI IDT [Integrated Device Technology], IDT70V38L15PFI Datasheet - Page 9

• Manufacturer Part Number: IDT70V38L15PFI
• Description: HIGH-SPEED 3.3V 64K x 18 DUAL-PORT STATIC RAM
• Manufacturer: IDT [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
IDT70V38L
High-Speed 3.3V 64K x 18 Dual-Port Static RAM
OR
SPS
= D
A
SEM
is not satisfied, the semaphore will fall positively to one side or the other, but there is no guarantee which side will be granted the semaphore flag.
OUT
0
R/W
IH
OL
-A
I/O
OE
or UB and LB = V
VALID" represents all I/O's (I/O
= V
2
IL
, CE
SIDE
SIDE
L
= CE
R
(2)
(2)
IH
= V
for the duration of the above timing (both write and read cycle) (Refer to Chip Enable Truth Table).
"A"
"B"
IH
or both UB and LB = V
t
AS
VALID ADDRESS
"A"
or SEM
A
A
0
t
AW
- I/O
0"A"
0"B"
SEM
SEM
Write Cycle
R/W
R/W
17
-A
-A
"A"
) equal to the semaphore value.
t
t
2"A"
2"B"
going HIGH to R/W
WP
EW
"A"
"A"
"B"
"B"
DATA
IH
(Refer to Chip Enable Truth Table).
t
IN
DW
t
WR
VALID
t
DH
"B"
MATCH
or SEM
t
9
SWRD
"B"
MATCH
going HIGH.
t
VALID ADDRESS
SPS
t
t
SOP
Read Cycle
SOP
t
SAA
Industrial and Commercial Temperature Ranges
t
t
AOE
ACE
(1,3,4)
DATA
VALID
OUT
4850 drw 10
t
OH
(2)
4850 drw 09
(1)