Datasheet

M41T94 DC and AC parameters
31/41
Figure 17. Power down/up mode AC waveforms
Table 15. Power down/up AC characteristics
Symbol Parameter
(1)
1. Valid for ambient operating temperature: T
A
= –40 to 85°C; V
CC
= 2.7 to 5.5 V (except where noted).
Min Typ 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 10 µs
t
R
V
PFD
(min) to V
PFD
(max) V
CC
rise time 10 µs
t
RB
V
SS
to V
PFD
(min) V
CC
rise time 1 µs
t
REC
(4)
4. Programmable (see Table 8 on page 27).
Power up deselect time 40 200 ms
t
DR
Expected data retention time 10
(5)
5. At 25°C, V
CC
= 0 V (when using SOH28 + M4T28-BR12SH SNAPHAT
®
top).
YEARS
AI03687
V
CC
INPUTS
(PER CONTROL INPUT)
OUTPUTS
DON'T CARE
HIGH-Z
tF
tFB
tR
tRB
tDR
VALID VALID
(PER CONTROL INPUT)
RECOGNIZEDRECOGNIZED
V
PFD
(max)
V
PFD
(min)
V
SO
tREC
RST