IDT72511/IDT72521
BIDIRECTIONAL FIRST-IN FIRST-OUT MEMORY
MILITARY AND COMMERCIAL TEMPERATURE RANGES
AC ELECTRICAL CHARACTERISTICS
(Commercial: VCC = 5V ± 10%, TA = 0°C to + 70°C; Military: VCC = 5V ± 10%, TA = –55°C to + 125°C)
(2)
Commercial
Military
Com'l & Mil.
IDT72511L50
IDT72521L50
IDT72511L25
IDT72521L25
IDT72511L35
IDT72521L35
IDT72521L40
Timing
Figure
Symbol
Parameter
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Unit
RESET TIMING (Port A and Port B)
t
t
t
t
t
RSC
Reset cycle time
Reset pulse width
Reset set-up time
Reset recovery time
Reset to flag time
35
25
25
10
—
—
—
—
—
35
45
35
35
10
—
—
—
—
—
45
50
40
40
10
—
—
—
—
—
50
65
50
50
15
—
—
—
—
—
65
ns
ns
ns
ns
ns
9
9
9
9
9
RS
RSS
RSR
RSF
PORT A TIMING
ta
A
Port A access time
—
5
25
—
—
5
35
—
—
5
40
—
—
5
50
—
ns
ns
12, 14, 15
12, 15, 16
taLZ
taHZ
taDV
Read or write pulse
LOW to data bus at
Low-Z
Read or write pulse
HIGH to data bus at
High- Z
—
5
15
—
—
5
20
—
—
5
25
—
—
5
30
—
ns
ns
12, 14, 15, 16
12, 14, 16
Data valid from read
pulse HIGH
taRC
taRPW
taRR
taS
Read cycle time
Read pulse width
Read recovery time
35
25
10
5
—
—
—
—
45
35
10
5
—
—
—
—
50
40
10
5
—
—
—
—
65
50
15
5
—
—
—
—
ns
ns
ns
ns
12
12, 14, 15
12
CSA
, A0
, A
1
, R/W
A
set-
10, 12, 16
up time
ta
H
CS , A
time
A
0
, A
1
, R/W
A
hold
5
—
5
—
5
—
5
—
ns
10, 12
taDS
taDH
Data set-up time
Data hold time
Write cycle time
15
0
—
—
—
—
—
—
18
2
—
—
—
—
—
—
20
5
—
—
—
—
—
—
30
5
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
11, 12, 14, 15
(1)
11, 12, 14, 15
taWC
35
25
10
25
45
35
10
35
50
40
10
40
65
50
15
50
12
11, 12, 14
12
taWPW
taWR
Write pulse width
Write recovery time
taWRCOM Write recovery time after
a command
11
2668 tbl 21
NOTE:
1. The minimum data hold time is 5ns (10ns for the 80ns speed grade) when writing to the Command or Configuration registers.
2. IDT72511 not available in military.
5.32
15
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
