Rainbow Electronics DS1315 - Manual (Page 17)

DS1315
041697 17/22
5V DEVICE POWER–DOWN CONDITION Figure 12
ЗЗЗЗЗЗЗЗЗЗ
ЗЗЗЗЗЗЗЗЗЗ
t CE
t PF
V BAT - 0.2V
4.5V
t F
CEI
CEO
CEO
V CCI
ROM/RAM = GND
ROM/RAM = V CCO
4.25V
4.0V
V BAT1,2
t FB
t PD
t CE
3.3V DEVICE POWER–UP POWER–DOWN CHARACTERISTICS,
ROM/RAM = V
CCO
OR GND (0
°
C to 70
°
C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Recovery Time at
Power–Up t
REC
V
CC
>3
2 ms 12
V
CC
Slew Rate Power–
Down
t
F
2.9 ≤ V
CC
≤ 3
300 ms 12
V
CC
Slew Rate Power–
UP
t
R
3 ≤ V
CC
≤ 2.9
0 ms 12
CEI High to Power–Fail t
PF
0 ms 12