DS2502 Maxim, DS2502 Datasheet - Page 22

• Manufacturer Part Number: DS2502
• Description: The DS2502 1Kb Add-Only Memory identifies and stores relevant information about the product to which it is associated
• Manufacturer: Maxim

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. V
7. 30 nanocoulombs per 72 time slots @ 5.0V.
8. At V
9. Capacitance on the data pin could be 800 pF when power is first applied. If a 5 kΩ resistor is used to
10. Maximum 1-Wire voltage for programming parameters is 11.5V to 12.0V; temperature range is -40°C
11. Under certain low-voltage conditions V
12. The accumulative duration of the programming pulses for each address must not exceed 5 ms.
13. IC operation and 1-wire communication is valid at V
14. Reset low pulse on DQ must be preceded by a valid t
guaranteed to be valid within 1 µs of this falling edge and will remain valid for 14 µs minimum. (15
µs total from falling edge on 1-Wire bus.)
pullup the data line to V
normal communications.
to +50°C.
guarantee a presence pulse.
only valid when V
voltage of 2.5V.
PUP
IH
is a function of the external pullup resistor and the pull-up voltage.
CC
= external pullup voltage.
=5.0V with a 5 kΩ pullup to V
PUP
=2.8V or higher.
CC
, 5 µs after power has been applied the parasite capacitance will not affect
CC
ILMAX
and a maximum time slot of 120 µs.
22 of 24
may have to be reduced to as much as 0.5V to always
PUP
REC
=2.5V or higher, but EPROM data read is
recovery time above the minimum V
PUP