IDT71321 Integrated Device Technology, IDT71321 Datasheet - Page 5

• Manufacturer Part Number: IDT71321
• Description: HIGH-SPEED 2K x 8 DUAL-PORT STATIC RAM WITH INTERRUPTS
• Manufacturer: Integrated Device Technology

IDT71321SA/LA AND IDT71421SA/LA
HIGH-SPEED 2K x 8 DUAL-PORT STATIC RAM WITH INTERRUPTS
AC ELECTRICAL CHARACTERISTICS OVER THE
OPERATING TEMPERATURE AND SUPPLY VOLTAGE RANGE
NOTES:
1. Transition is measured 500mV from Low or High-impedance voltage Output Test Load (Figure 2).
2. “X” in part numbers indicates power rating (SA or LA).
3. This parameter is guaranteed by device characterization, but is not production tested.
TIMING WAVEFORM OF READ CYCLE NO. 1, EITHER SIDE
NOTES:
1. R/
2. t
3. Start of valid data depends on which timing becomes effective last t
Read Cycle
Symbol
ADDRESS
DATA
BUSY
t
t
t
t
t
t
t
t
t
operations
RC
AA
ACE
AOE
OH
LZ
HZ
PU
PD
BDD
W
delay is required only in the case where the opposite port is completing a write operation to the same address location. For simultaneous read
= V
OUT
OUT
Address Access Time
Output High-Z Time
Read Cycle Time
Chip Enable Access Time
Chip Enable to Power Up Time
Chip Disable to Power Down Time
IH
Output Enable Access Time
Output Hold From Address Change
Output Low-Z Time
,
BUSY
CE
PREVIOUS DATA VALID
= V
has no relationship to valid output data.
IL
, and
Parameter
OE
(1,3)
(1,3)
= V
IL
t
OH
. Address is valid prior to or coincidental with
t
AA
(3)
(3)
t
RC
t
BDDH
AOE
(2,3)
Min. Max.
71321X20
6.03
20
—
—
—
—
, t
0
3
0
ACE
, t
20
20
11
10
20
—
—
—
—
DATA VALID
AA
, and t
CE
71321X25
71421X25
Min. Max. Min. Max. Min. Max. Min.
transition Low.
25
—
—
—
—
—
3
0
0
BDD
.
(1)
25
25
12
10
25
—
—
—
—
(2)
71321X35
71421X35
35
—
—
—
—
—
3
0
0
t
OH
COMMERCIAL TEMPERATURE RANGE
35
35
20
15
35
—
—
—
—
71321X55
71421X55
55
—
—
—
—
—
3
5
0
55
55
25
25
50
—
—
—
—
71321X100
71421X100
100
—
—
—
10
—
—
5
0
2691 drw 06
Max. Unit
100
100
—
40
—
—
40
—
50
2689 tbl 09
ns
ns
ns
ns
ns
ns
ns
ns
ns
5