Datasheet

DS2438
AC ELECTRICAL CHARACTERISTICS: NV MEMORY
(-40°C to +85°C; 2.4V £ VDD £ 10.0V)
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES
NV Write Cycle Time t
WR
2 10 ms
EEPROM Writes (copy
scratchpad command)
N
EEWR
-20ºC to +55ºC 50k writes
EEPROM data retention t
EEDR
-20ºC to +55ºC 10 years
AC ELECTRICAL CHARACTERISTICS: 1-WIRE INTERFACE
(-40°C to +85°C; 2.4V £ VDD £ 10.0V)
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES
Time Slot t
SLOT
60 120
ms
Recovery Time t
REC
1
ms
Write 0 Low Time t
LOW0
60 120
ms
Write 1 Low Time t
LOW1
1 15
ms
Read Data Valid t
RDV
15
ms
Reset Time High t
RSTH
480
ms
Reset Time Low t
RSTL
480 980
ms
Presence Detect High t
PDH
15 60
ms
Presence Detect Low t
PDL
60 240
ms
DQ Capacitance C
DQ
25 pF
NOTES:
1. All voltages are referenced to GND.
2. Input load is to GND.
3. Current measurement accuracy is ±2 LSb or 1%, whichever is greater.
29
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
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Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical
Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
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2005 Maxim Integrated
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