参数资料
型号: M48T02-70PC1
厂商: 意法半导体
英文描述: 16 Kbit 2Kb x8 TIMEKEEPER[ SRAM
中文描述: 16千位2KB的x8计时器[静态存储器
文件页数: 5/15页
文件大小: 94K
代理商: M48T02-70PC1
Symbol
Parameter
Min
Max
Unit
t
PD
E or W at V
IH
before Power Down
0
μ
s
t
F
(1)
V
PFD
(max) to V
PFD
(min) V
CC
Fall Time
300
μ
s
t
FB(2)
V
PFD
(min) to V
SO
V
CC
Fall Time
10
μ
s
t
R
V
PFD
(min) to V
PFD
(max) V
CC
Rise Time
0
μ
s
t
RB
V
SO
to V
PFD
(min) V
CC
Rise Time
1
μ
s
t
REC
E or W at V
IH
after Power Up
2
ms
Notes
: 1. V
PFD
(max) to V
PFD
(min) fall timeof less thant
F
may result in deselection/writeprotection not occurring until 50
μ
s after
V
CC
passes V
PFD
(min).
2. V
PFD
(min) to V
SO
fall timeof less than t
FB
may cause corruptionof RAM data.
Table8. PowerDown/Up Mode AC Characteristics
(T
A
= 0 to 70
°
C)
AI00606
VCC
VPFD(max)
INPUTS
(PER CONTROL INPUT)
OUTPUTS
DON’T CARE
HIGH-Z
tF
tFB
tR
tREC
tPD
tRB
tDR
VALID
VALID
NOTE
(PER CONTROL INPUT)
RECOGNIZED
RECOGNIZED
VPFD(min)
VSO
Figure 5. Power Down/Up Mode AC Waveforms
Note:
Inputs may or may not be recognized at this time. Caution should be taken to keep E high as V
rises past V
(min). Some systems
may perform inadvertent write cycles after V
rises above V
(min) but before normal system operations begin. Even though a power on
reset is being applied to the processor, a reset condition may not occur until afterthe system clock is running.
5/15
M48T02, M48T12
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