M48T248V ST Microelectronics, M48T248V Datasheet - Page 13

• Manufacturer Part Number: M48T248V
• Description: 5.0 or 3.3V / 1024K TIMEKEEPER SRAM with PHANTOM
• Manufacturer: ST Microelectronics

Table 8. Memory AC Characteristics, M48T248V
Note: 1. Valid for Ambient Operating Temperature: T
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
WLWH
t
WHQX
WHAX
DVWH
WHDX
GHQZ
WLQZ
AVQV
ELQV
GLQV
ELQX
GLQX
AXQX
EHQZ
ELEH
AVWL
EHAX
DVEH
EHDX
AVEL
AVAV
AVAV
2. These parameters are sampled with a 5 pF load are not 100% tested.
3. t
4. t
5. t
Symbol
WE going high.
WP
WR
DH
and t
is specified as the logical AND of CE and WE. t
is a function of the latter occurring edge of WE or CE.
t
t
t
t
t
t
ODW
WR1
WR2
t
WP1
t
DH1
DH2
t
t
t
t
OD
DS
t
t
OEW
t
ACC
t
t
COE
t
WP2
WC
AW
DS
RC
CO
OE
OH
(5)
(2)
(5)
(5)
(3)
(4)
(4)
(2)
are measured from the earlier of CE or WE going high.
READ Cycle Time
Access Time
Chip Enable Low to Output Valid
Output Enable Low to Output Valid
Chip Enable or Output Enable Low to Output Transition
Output Hold from Address Change
Chip Enable or Output Enable High to Output Hi-Z
Output Hi-Z from WE
WRITE Cycle Time
WRITE Enable Pulse Width
Chip Enable Pulse Width
Address Setup Time
WRITE Recovery Time
Address Hold Time from WE
Output Active from WE
Data Setup Time
Data Hold Time from WE
Data Hold Time from CE
A
Parameter
= 0 to 70°C; V
WP
is measured from the latter of CE or WE going low to the earlier of CE or
(1)
CC
= 4.5 to 5.5V or 3.0 to 3.6V (except where noted).
Min
M48T248V–85
85
85
65
75
15
35
15
5
5
0
5
5
0
M48T248Y, M48T248V
Max
85
85
45
35
30
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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