m48t12 STMicroelectronics, m48t12 Datasheet - Page 8

• Manufacturer Part Number: m48t12
• Description: 5.0v, 16 Kbit 2kb X 8 Timekeeper Sram
• Manufacturer: STMicroelectronics

Figure 4.
Note:
Table 3.
1. Valid for Ambient Operating Temperature: T
8/24
Symbol
t
t
t
t
t
t
t
t
t
GHQZ
AVQV
GLQV
GLQX
EHQZ
AXQX
ELQV
ELQX
AVAV
A0-A10
E
G
DQ0-DQ7
The state of the eight three-state Data I/O signals is controlled by E and G. If the outputs are
activated before t
the Address Inputs are changed while E and G remain active, output data will remain valid
for Output Data Hold time (t
Read mode AC waveforms
WRITE Enable (W) = High.
Read mode AC characteristics
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
AVQV
, the data lines will be driven to an indeterminate state until t
tAVQV
tELQX
A
(1)
tGLQX
= 0 to 70°C; V
tELQV
AXQX
tGLQV
) but will go indeterminate until the next Address Access.
tAVAV
VALID
CC
= 4.75 to 5.5V or 4.5 to 5.5V (except where noted).
Min
70
10
5
5
–70
Max
70
70
25
25
35
VALID
M48T02/M48T12
Min
150
10
5
5
tGHQZ
–150
Max
150
150
75
35
35
Min
200
10
5
5
tAXQX
tEHQZ
–200
AI01330
Max
200
200
80
40
40
AVQV
Unit
. If
ns
ns
ns
ns
ns
ns
ns
ns
ns