DS2415 Dallas Semiconducotr, DS2415 Datasheet - Page 14

• Manufacturer Part Number: DS2415
• Description: 1-Wire Time Chip
• Manufacturer: Dallas Semiconducotr

AC ELECTRICAL CHARACTERISTICS
NOTES:
1. All voltages are referenced to ground.
2. Measured with outputs open.
3. V
4. Input load is to ground.
5. An additional reset or communication sequence cannot begin until the reset high time has expired.
6. Read data setup time refers to the time the bus master must pull the I/O line low to read a bit. Data is
7. Under certain low voltage conditions V
8. The reset low time (t
9. When V
10. At V
11. At V
12. V
PARAMETER
Time Slot
Write 1 Low Time
Write 0 Low Time
Read Low Time
Read Data Valid
Release Time
Read Data Setup
Recovery Time
Reset Time High
Reset Time Low
Presence Detect High
Presence Detect Low
guaranteed to be valid within 1 s of this falling edge.
guarantee a Presence Pulse.
otherwise, it could mask or conceal interrupt pulses.
PUP
IH1
BAT
BAT
has to be V
= external pullup voltage.
BAT
= 3V 10%
= 5V 10%
ramps up, the oscillator is always off.
BAT
-0.3V or higher.
RSTL
) should be restricted to a maximum of 960 s, to allow interrupt signaling,
(-40°C to +85°C, V
SYMBOL MIN
t
RELEASE
IL1MAX
t
t
t
t
t
t
LOWR
t
LOW1
LOW0
t
t
t
RSTH
SLOT
RSTL
RDV
t
PDH
REC
PDL
SU
14 of 14
may have to be reduced to as much as 0.5V to always
PUP
480
480
60
60
15
60
1
1
0
1
= 2.5V to 6.0V, V
exactly 15
TYP
15
MAX
120
120
960
240
15
15
45
60
1
BAT
UNITS
= 2.5V to 5.5V)
s
s
s
s
s
s
s
s
s
s
s
s
NOTES
DS2415
6
5
8