Datasheet

DS1315 Phantom Time Chip
17 of 21
Figure 12. 5V Power-Down Condition
3.3V DEVICE POWER-UP POWER-DOWN CHARACTERISTICS—
ROM/
RAM
= V
CCO
OR GND
(T
A
= 0°C to +70°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Recovery Time at Power-Up
t
REC
1.5
2.5
ms
12
V
CC
Slew Rate
Power-Down
V
PF
(max) to V
PF
(min)
t
F
300 µs 12
V
CC
Slew Rate
Power-Up
V
PF
(min) to V
PF
(max)
t
R
0 µs 12
CEI
High to Power-Fail
t
PF
0
µs
12
CEI
Propagation Delay
t
PD
10
ns
2, 3, 11