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DS1315 Datasheet, PDF (16/21 Pages) Dallas Semiconductor – Phantom Time Chip
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Figure 10. Timing Diagram: Reset Pulse
RST
tRST
DS1315 Phantom Time Chip
5V DEVICE POWER-UP/POWER-DOWN CHARACTERISTICS—
ROM/RAM = VCCO OR GND
(TA = 0°C to +70°C)
PARAMETER
SYMBOL MIN TYP MAX UNITS
Recovery Time at Power-Up
tREC
1.5
2.5
ms
VCC Slew Rate
Power-Down
tF
300
µs
VPF(max) to VPF(min)
VCC Slew Rate
Power-Down
tFB
10
µs
VPF(min) to VSW
VCC Slew Rate
Power-Up
tR
0
µs
VPF(min) to VPF(max)
CEI High to Power-Fail
tPF
0
µs
CEI Propagation Delay
tPD
5
ns
NOTES
11
11
11
11
11
2, 3, 11
Figure 11. 5V Power-Up Condition
16 of 21
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