7025L25PF IDT, Integrated Device Technology Inc, 7025L25PF Datasheet - Page 17

• Manufacturer Part Number: 7025L25PF
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 7025L25PF

• Density: 128Kb
• Access Time (max): 25ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 5V
• Address Bus: 26b
• Package Type: TQFP
• Operating Temp Range: 0C to 70C
• Number Of Ports: 2
• Supply Current: 220mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 100
• Word Size: 16b
• Number Of Words: 8K
• Lead Free Status / Rohs Status: Not Compliant

NOTES:
1. All timing is the same for left and right ports. Port “A” may be either the left or right port. Port “B” is the port opposite from “A”.
2. See Interrupt Flag Truth Table.
3. Timing depends on which enable signal (CE or R/W) is asserted last.
4. Timing depends on which enable signal (CE or R/W) is de-asserted first.
Truth Tables
Truth Table I — Interrupt Flag
NOTES:
1. Assumes BUSY
2. If BUSY
3. If BUSY
4. INT
Waveform of Interrupt Timing
ADDR
IDT7025S/L
High-Speed 8K x 16 Dual-Port Static RAM
ADDR
R/W
R/W
INT
CE
X
X
X
L
INT
OE
CE
R
L
"A"
"A"
"A"
"B"
and
"B"
"B"
"B"
"B"
L
R
= V
INT
= V
CE
L
IL
IL
X
X
L
L
, then no change.
, then no change.
must be initialized at power-up.
L
L
= BUSY
Left Port
OE
R
X
X
X
L
= V
L
IH
.
A
t
AS
0L
1FFF
1FFE
t
-A
X
X
AS
(3)
12L
t
(3)
INS
t
INR
(3)
(3)
INTERRUPT CLEAR ADDRESS
INT
INTERRUPT SET ADDRESS
X
X
H
L
(3)
(2)
L
(1)
(1)
R/W
X
X
X
L
R
t
WC
t
RC
6.42
17
CE
X
X
L
L
R
(2)
Right Port
Military, Industrial and Commercial Temperature Ranges
OE
(2)
X
X
X
L
R
t
WR
(4)
A
0R
1FFF
1FFE
-A
X
X
12R
INT
H
X
X
L
(2)
(3)
R
Set Right INT
Reset Right INT
Set Left INT
Reset Left INT
Function
L
R
Flag
L
Flag
R
Flag
2683 drw 18
2683 drw 17
Flag
2689 tbl 16