DS2433T Dallas Semiconducotr, DS2433T Datasheet - Page 19

• Manufacturer Part Number: DS2433T
• Description: 4k-Bit 1-Wire EEPROM
• Manufacturer: Dallas Semiconducotr

AC ELECTRICAL CHARACTERISTICS
OVERDRIVE SPEED
NOTES:
1. All voltages are referenced to ground.
2. V
3. Input load is to ground.
4. An additional reset or communication sequence cannot begin until the reset high time has expired.
5. Read data setup time refers to the time the host must pull the 1-Wire bus low to read a bit. Data is
6. Capacitance on the data pin could be 800 pF when power is first applied. If a 5 k
7. The reset low time (t
8. V
9. Under certain low voltage conditions V
10. The Copy Scratchpad takes 5 ms maximum during which the voltage on the 1-Wire bus must not fall
11. During the execution of the Copy Scratchpad command the DS2433 automatically erases the memory
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.
pull up the data line to V
normal communications.
otherwise, it could mask or conceal interrupt pulses.
guarantee a Presence Pulse.
below 2.8V.
locations to be written to. No extra steps need to be taken by the bus master.
PUP
IH
is a function of the external pullup resistor and V
PARAMETER
= external pullup voltage.
RSTL
PUP
) should be restricted to a maximum of 960
, 5 s after power has been applied the parasite capacitance will not affect
SYMBOL
t
t
RELEASE
t
t
PDHIGH
t
t
t
PDLOW
t
t
t
LOWR
LOW1
LOW0
t
RSTH
SLOT
RSTL
t
RDV
REC
SU
ILMAX
19 of 19
may have to be reduced to as much as 0.5V to always
MIN
48
48
6
1
6
1
0
1
2
8
PUP
(V
.
exactly 2
PUP
TYP
1.5
=2.8V to 6.0V;-40 C to +85 C)
MAX
16
16
80
24
s, to allow interrupt signaling,
2
2
4
1
6
UNITS
resistor is used to
s
s
s
s
s
s
s
s
s
s
s
s
NOTES
DS2433
5
4