7008L20JI IDT, 7008L20JI Datasheet - Page 11

• Manufacturer Part Number: 7008L20JI
• Description: SRAM
• Manufacturer: IDT
• Type: Dual Port Static RAMr

Specifications of 7008L20JI

• Memory Size: 512 kbit
• Organization: 64 k x 8
• Access Time: 20 ns
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 4.5 V
• Maximum Operating Current: 50 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: PLCC-84
• Interface: TTL
• Memory Type: Asynchronous
• Part # Aliases: IDT7008L20JI

Timing Waveform of Semaphore Write Contention
Timing Waveform of Semaphore Read after Write Timing, Either Side
NOTES:
1. CE = V
2. "DATA
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
IDT7008S/L
High-Speed 64K x 8 Dual-Port Static RAM
OR
SPS
= D
OUT
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.
IH
OL
DATA
VALID" represents all I/O's (I/O
for the duration of the above timing (both write and read cycle) (Refer to Chip Enable Truth Table).
A
= V
SEM
R/W
0
-A
OE
IL
, CE
2
0
SIDE
SIDE
L
= CE
(2)
(2)
R
= V
"A"
"B"
IH
(Refer to Chip Enable Truth Table).
"A"
A
A
t
or SEM
VALID ADDRESS
AS
0
0"A"
0"B"
- I/O
SEM
SEM
R/W
R/W
t
AW
-A
-A
15
"A"
Write Cycle
) equal to the semaphore value.
2"A"
2"B"
"A"
"A"
"B"
"B"
going HIGH to R/W
t
t
EW
WP
DATA
t
DW
IN
t
WR
VALID
t
DH
MATCH
"B"
or SEM
6.42
11
t
SWRD
t
SOP
"B"
MATCH
going HIGH.
VALID ADDRESS
t
SOP
Read Cycle
Military, Industrial and Commercial Temperature Ranges
t
SAA
t
SPS
t
t
ACE
AOE
(1,3,4)
DATA
VALID
OUT
(2)
3198 drw 12
t
OH
3198 drw 11
(1)