Datasheet

DS1922L/DS1922T
iButton Temperature Loggers
with 8KB Data-Log Memory
14
Maxim Integrated
DS1922L
DS1922T
GENERAL-PURPOSE
SRAM
(512 BYTES)
CALIBRATION MEMORY
(64 BYTES)
REGISTER PAGES
(64 BYTES)
MEMORY
FUNCTION
CONTROL
64-BIT
LASERED
ROM
256-BIT
SCRATCHPAD
CONTROL
LOGIC
32.768kHz
OSCILLATOR
3V LITHIUM
IO
THERMAL
SENSE
ADC
DATA-LOG MEMORY
8KB
INTERNAL
TIMEKEEPING,
CONTROL REGISTERS,
AND COUNTERS
ROM
FUNCTION
CONTROL
1-Wire PORT
PARASITE-POWERED
CIRCUITRY
Figure 1. Block Diagram