Rainbow Electronics DS1315 - Manual (Page 16)

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
ЗЗЗЗЗ
ЗЗЗЗЗ
ЗЗЗЗЗ
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