M48T37 ST Microelectronics, M48T37 Datasheet - Page 7

• Manufacturer Part Number: M48T37
• Description: 3.3V-5V 256 Kbit 32Kb x8 TIMEKEEPER SRAM
• Manufacturer: ST Microelectronics

Figure 6. Read Mode AC Waveforms
Note: Write Enable (W) = High.
Table 9. Read Mode AC Characteristics
(T
Note: 1. C
A
t
t
t
t
t
Symbol
t
t
t
GHQZ
AVQV
ELQV
GLQV
ELQX
GLQX
EHQZ
AXQX
t
= 0 to 70 C or –40 to 85 C)
AVAV
2. C
(1)
(2)
(1)
(1)
(2)
(2)
(2)
(1)
L
L
= 100pF.
= 5pF.
A0-A14
E
G
DQ0-DQ7
Read Cycle Time
Address Valid to Output Valid
Chip Enable Low to Output Valid
Output Enable Low to Output Valid
Chip Enable Low to Output Transition
Output Enable Low to Output Transition
Chip Enable High to Output Hi-Z
Output Enable High to Output Hi-Z
Address Transition to Output Transition
Parameter
tAVQV
tELQX
.
tGLQX
tELQV
tGLQV
tAVAV
VALID
V
CC
Min
70
10
5
5
M48T37Y
= 4.5V to 5.5V
-70
Max
70
70
35
25
25
VALID
tGHQZ
V
CC
Min
100
10
10
5
M48T37V
= 3.0V to 3.6V
M48T37Y, M48T37V
-10
Max
100
100
50
50
40
tAXQX
tEHQZ
AI00925
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
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