DS1672-3(2011) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
DS1672-3 Datasheet PDF : 15 Pages
| |||
POWER-UP/POWER-DOWN CHARACTERISTICS
(TA = -40°C to +85°C)
DS1672
PARAMETER
SYMBOL MIN TYP MAX UNITS
VCC Detect to RST (VCC Falling)
VCC Detect to RST (VCC Rising)
(Note 11)
VCC Fall Time; VPF(MAX) to VPF(MIN)
tRPD
10
µs
tRPU
250
ms
tF
300
µs
VCC Rise Time; VPF(MIN) to VPF(MAX)
tR
0
µs
Note 11: If the EOSC bit in the control register is set to logic 1, tRPU is equal to 250ms plus the startup time of the crystal oscillator.
Warning: Negative undershoots below –0.3V while the part is in battery-backed mode can cause
loss of data.
Figure 1. Timing Diagram
SDA
tBUF
tLOW
tF
tHD:STA
SCL
STOP START
tHD:STA
tHD:DAT
tHIGH
tSU:DAT
tSU:STA
REPEATED
START
Figure 2. Power-Up/Power-Down Timing
VPFV(mCaxC)
VPF(min)
tPD
RST
tF
tRPD
INPUTS
RECOGNIZED
DON'T CARE
OUTPUTS
VALID
HIGH IMPEDANCE
6 of 15
tSU:STO
tR
tRPU
RECOGNIZED
VALID
Share Link: 