m48t129v STMicroelectronics, m48t129v Datasheet - Page 11

• Manufacturer Part Number: m48t129v
• Description: 5.0 Or 3.3v, 1 Mbit 128 Kbit X 8 Timekeeper Sram
• Manufacturer: STMicroelectronics

Table 4. WRITE Mode AC Characteristics
Note: 1. Valid for Ambient Operating Temperature: T
t
t
WHQX
WLQZ
Symbol
t
t
t
t
t
2. C
3. If E goes low simultaneously with W going low, the outputs remain in the high impedance state.
t
t
t
t
t
t
t
t
WLWH
WHAX
DVWH
WHDX
AVWH
AVWL
EHAX
DVEH
EHDX
AVEH
AVEL
ELEH
AVAV
L
(2,3)
(2,3)
= 5pF.
WRITE Cycle Time
Address Valid to WRITE Enable Low
Address Valid to Chip Enable Low
WRITE Enable Pulse Width
Chip Enable Low to Chip Enable High
WRITE Enable High to Address Transition
Chip Enable High to Address Transition
Input Valid to WRITE Enable High
Input Valid to Chip Enable High
WRITE Enable High to Input Transition
Chip Enable High to Input Transition
WRITE Enable Low to Output Hi-Z
Address Valid to WRITE Enable High
Address Valid to Chip Enable High
WRITE Enable High to Output Transition
Parameter
(1)
A
= 0 to 70°C; V
CC
= 4.5 to 5.5V or 3.0 to 3.6V (except where noted).
Min
70
50
55
10
30
30
10
60
60
0
0
5
5
5
M48T129Y
–70
Max
25
M48T129Y, M48T129V
Min
85
60
65
15
35
35
15
70
70
0
0
5
5
5
M48T129V
–85
Max
30
Unit
11/30
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns