7008L20JI IDT, 7008L20JI Datasheet - Page 5

• 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

Truth Table I: Chip Enable
NOTES:
1. Chip Enable references are shown above with the actual CE
Truth Table II: Non-Contention Read/Write Control
NOTES:
1. A
2. Refer to Chip Enable Truth Table.
Truth Table III: Semaphore Read/Write Control
NOTES:
1. There are eight semaphore flags written to via I/O
2. Refer to Chip Enable Truth Table.
IDT7008S/L
High-Speed 64K x 8 Dual-Port Static RAM
CE
CE
CE
H
X
L
L
H
H
L
H
L
(2)
(2)
0L
– A
R/W
15L
R/W
↑
H
X
X
L
H
X
>V
Inputs
Inputs
≠ A
< 0.2V
CC
CE
V
V
0R
X
X
IH
IL
-0.2V
0
OE
– A
(1)
X
X
L
OE
X
X
L
H
15R.
SEM
L
L
L
SEM
H
H
H
X
>V
<0.2V
CC
CE
V
V
X
X
DATA
Outputs
IH
IL
DATA
-0.2V
I/O
1
______
DATA
Outputs
DATA
High-Z
High-Z
I/O
0-7
OUT
IN
0-7
OUT
IN
Port Selected (TTL Active)
Port Selected (CMOS Active)
Port Deselected (TTL Inactive)
Port Deselected (TTL Inactive)
Port Deselected (CMOS Inactive)
Port Deselected (CMOS Inactive)
Read Semaphore Flag Data Out
Not Allowed
Write I/O
0
Deselected: Power-Down
Read memory
Outputs Disabled
Write to memory
and read from all the I/Os (I/O
(1)
0
into Semaphore Flag
0
and CE
1
levels, CE is a reference only.
6.42
5
0
-I/O
7
). These eight semaphore flags are addressed by A
Military, Industrial and Commercial Temperature Ranges
Mode
Mode
(1)
Mode
0
-A
2
.
3198 tbl 03
3198 tbl 04
3198 tbl 02