M48Z2M1Y, M48Z2M1V DC and AC parameters
Doc ID 5135 Rev 6 15/20
Figure 10. Power down/up mode AC waveforms
Table 9. Power down/up AC characteristics
Table 10. Power down/up trip points DC characteristics
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
ER
E recovery time 40 120 ms
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
SO
V
CC
fall time
M48Z2M1Y 10 µs
M48Z2M1V 150 µs
t
R
V
PFD
(min) to V
PFD
(max) V
CC
rise time 10 µs
t
WP
Write protect time from V
CC
= V
PFD
M48Z2M1Y 40 150 µs
M48Z2M1V 40 250 µs
Symbol Parameter
(1)(2)
1. All voltages referenced to V
SS
.
2. 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 Typ Max Unit
V
PFD
Power-fail deselect voltage
M48Z2M1Y 4.2 4.3 4.5 V
M48Z2M1V 2.8 2.9 3.0 V
V
SO
Battery backup switchover voltage
M48Z2M1Y 3.0 V
M48Z2M1V 2.45 V
t
DR
(3)
3. At 25 °C; V
CC
= 0 V.
Expected data retention time 10 YEARS
AI01031
V
CC
E
(PER CONTROL INPUT)
OUTPUTS
DON'T CARE
HIGH-Z
tF
tFB
tR
tRB
tWP
tDR
VALID VALID
(PER CONTROL INPUT)
RECOGNIZEDRECOGNIZED
V
PFD
(max)
V
PFD
(min)
V
SO
tER
Obsolete Product(s) - Obsolete Product(s)
