
DS1315
041697 16/22
TIMING DIAGRAM: RESET PULSE Figure 10
t
RST
RST
5V 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
>4.5
2 mS 11
V
CC
Slew Rate Power–
Down
t
F
4.0 ≤ V
CC
≤
4.5
300 mS 11
V
CC
Slew Rate Power–
Down
t
FB
3.0 ≤ V
CC
≤
4.0
10 mS 11
V
CC
Slew Rate Power–
UP
t
R
4.5 ≤ V
CC
≤
4.0
0 mS 11
CEI High to Power–Fail t
PF
0 mS 11
5V DEVICE POWER–UP CONDITION Figure 11
4.5V
t
R
V
IL
BAT - 0.2V
CEI
CEO
CEO
V
CCI
ROM/RAM = GND
ROM/RAM
= V
CCO
t
CE
t
CE
t
REC
4.25V
4.0V
t
PD
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