IDT70T633 Integrated Device Technology, IDT70T633 Datasheet - Page 19

• Manufacturer Part Number: IDT70T633
• Description: 512k X 18, 3.3v/2.5v Dual-port Ram, Interleaved I/o
• Manufacturer: Integrated Device Technology

Waveform of BUSY Arbitration Controlled by CE Timing (M/S = V
Waveform of BUSY Arbitration Cycle Controlled by Address Match
Timing (M/S = V
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 port “A”.
2. If t
3. CE
4. CE
AC Electrical Characteristics Over the
Operating Temperature and Supply Voltage Range
NOTES:
1. Timing is the same for both ports.
2. These values are valid regardless of the power supply level selected for I/O and control signals (3.3V/2.5V). See page 6 for details.
3. 8ns Commercial and 10ns Industrial speed grades are available in BF-208 and BC-256 packages only.
ADDR
ADDR
BUSY
INTERRUPT TIMING
t
t
t
t
AS
WR
INS
INR
IDT70T633/1S
High-Speed 2.5V 512/256K x 18 Asynchronous Dual-Port Static RAM
ADDR
Symbol
BUSY
CE
CE
and
APS
X
0
X
= V
= OE
"A" (3)
"B" (3)
"A"
"B"
"B"
is not satisfied, the BUSY signal will be asserted on one side or another but there is no guarantee on which side BUSY will be asserted.
IL
"A"
"B"
"B"
when CE
X
Interrupt Set Time
Interrupt Reset Time
Address Set-up Time
Write Recovery Time
= LB
X
= UB
0
X
= V
X
IL
= V
and CE
IL
. CE
IH
t
APS
)
1
1
Parameter
X
X
(1,3,4)
= V
= V
(2)
IH
IH
t
.
. CE
APS
X
(2)
= V
t
BAA
MATCHING ADDRESS "N"
IH
ADDRESS "N"
when CE
0
t
X
BAC
= V
ADDRESSES MATCH
IH
and/or CE
Min.
____
____
70T633/1S8
0
0
Com'l Only
19
1
Max.
X
____
____
(3)
8
8
= V
IL
.
Min.
____
____
70T633/1S10
0
0
& Ind
Com'l
Industrial and Commercial Temperature Ranges
(3)
Max.
____
____
10
10
t
t
BDC
BDA
(1,2)
Min.
____
____
70T633/1S12
0
0
Com'l
& Ind
Max.
____
____
12
12
Min.
____
____
70T633/1S15
0
0
Com'l Only
IH
)
Max.
____
____
15
15
(1)
5670 drw 16
5670 drw 17
5670 tbl 16
Unit
ns
ns
ns
ns
.