Datasheet

DC and AC parameters M48T201Y, M48T201V
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Figure 14. Power down/up mode AC waveforms
Table 14. Power down/up mode AC characteristic
Symbol Parameter
(1)
1. Valid for ambient operating temperature: T
A
= 0 to 70°C; V
CC
= 4.5 to 5.5 V or 3.0 to 3.6 V (except where noted).
Min Max Unit
t
F
(2)
2. V
PFD
(max) to V
PFD
(min) fall time of less than t
F
may result in deselection/write protection not occurring until 200 µs after
V
CC
passes V
PFD
(min).
V
PFD
(max) to V
PFD
(min) V
CC
fall time 300 µs
t
FB
(3)
3. V
PFD
(min) to V
SS
fall time of less than t
FB
may cause corruption of RAM data.
V
PFD
(min) to V
SS
V
CC
fall time
M48T201Y 10 µs
M48T201V 150 µs
t
R
V
PFD
(min) to V
PFD
(max) V
CC
rise time 10 µs
t
REC
V
PFD
(max) to RST high 40 200 ms
t
RB
V
SS
to V
PFD
(min) V
CC
rise time 5 µs
AI03519
V
CC
INPUTS
RST
OUTPUTS
DON'T CARE
HIGH-Z
tF
tFB
tR
tRECtRB
VALID VALID
V
PFD
(max)
V
PFD
(min)
V
SO
VALID VALID