IDT7130SA Integrated Device Technology, IDT7130SA Datasheet - Page 16

• Manufacturer Part Number: IDT7130SA
• Description: High Speed 1k X 8 Dual-port Static Sram
• Manufacturer: Integrated Device Technology

Truth Tables
Truth Table I — Non-Contention Read/Write Control
NOTES:
1. A
2. If BUSY = L, data is not written.
3. If BUSY = L, data may not be valid, see t
4. 'H' = V
Truth Table II — Interrupt Flag
NOTES:
1. Assumes BUSY
2. If BUSY
3. If BUSY
4. 'H' = HIGH,' L' = LOW,' X' = DON’T CARE
Truth Table III — Address BUSY
Arbitration
NOTES:
1. Pins BUSY
2. 'L' if the inputs to the opposite port were stable prior to the address and enable inputs
3. Writes to the left port are internally ignored when BUSY
CE
IDT7130SA/LA and IDT7140SA/LA
High-Speed 1K x 8 Dual-Port Static SRAM
X
X
H
L
R/W
IDT7140 (slave). BUSY
outputs. On slaves the BUSY
of this port. 'H' if the inputs to the opposite port became stable after the address and
enable inputs of this port. If t
result. BUSY
regardless of actual logic level on the pin. Writes to the right port are internally
ignored when BUSY
the pin.
R/W
L
0L
X
X
L
H
H
X
X
X
L
– A
L
IH
CE
10L
L
R
, 'L' = V
X
X
H
L
= V
R
= V
Inputs
L
• A
and BUSY
L
IL
IL
CE
CE
0R
and BUSY
, then No Change.
, then No Change.
H
H
X
X
L
L
L
L
L
IL
L
NO MATCH
L
– A
, 'X' = DON’T CARE, 'Z' = HIGH IMPEDANCE
= BUSY
A
A
MATCH
MATCH
MATCH
0R
0L
Inputs
R
10R
-A
-A
outputs are driving LOW regardless of actual logic level on
R
X
.
9L
9R
are both outputs for IDT7130 (master). Both are inputs for
R
outputs on the IDT7130 are open drain, not push-pull
Left Port
R
outputs can not be LOW simultaneously.
OE
(1)
OE
= V
X
X
X
H
X
X
X
L
L
APS
X
L
input internally inhibits writes.
IH
is not met, either BUSY
BUSY
(2)
H
H
H
DATA
A
WDD
L
DATA
9L
3FE
Outputs
(1)
3FF
D
X
X
-A
Z
Z
Z
0-7
and t
0L
OUT
IN
BUSY
DDD
(2)
H
H
H
Port Disabled and in Power-Down Mode, I
Data on Port Written into Memory
Data in Memory Output on Port
High Impedance Outputs
CE
R
L
timing.
INT
(1)
outputs are driving LOW
L
X
X
H
R
L
or BUSY
(3)
(2)
L
= CE
Write Inhibit
Function
L
Normal
Normal
Normal
R
= V
R/W
= LOW will
(1,4)
X
X
X
2689 tbl 15
L
IH
, Power-Down Mode, I
R
(3)
16
CE
X
X
L
L
R
(3)
Military, Industrial and Commercial Temperature Ranges
(2)
Right Port
OE
X
X
X
L
SB1
R
SB2
or I
or I
Function
SB3
SB4
A
9R
3FF
3FE
X
X
-A
0R
(4)
INT
X
X
H
L
(2)
(3)
R
Set Right INT
Reset Right INT
Set Left INT
Reset Left INT
Function
L
R
Flag
L
Flag
R
Flag
Flag
2689 tbl 13
2689 tbl 14