Features
" 11-bit ADC Temp-to-Digital Converter with 0.125?/SPAN>C Resolution
" Temperature Sensor Compliant with Jedec JC42.4
" Two-wire Serial Interface: I2C/SMBus?SPAN class="pst AT30TS00-MAH-T_2308254_0"> compatible
? SMBus?SPAN class="pst AT30TS00-MAH-T_2308254_0"> Timeout supported
" B-grade Accuracy
? ?/SPAN>1?/SPAN>C (max) for +75?/SPAN>C to +95?/SPAN>C
? ?/SPAN>2?/SPAN>C (max) for +40?/SPAN>C to +125?/SPAN>C
? ?/SPAN>3?/SPAN>C (max) for -20?/SPAN>C to +125?/SPAN>C
" Optimized for voltage range: 2.7V to 3.6V
" 100khz and 400khz Compatibility
" Up to Eight Devices on a Single Bus
" Versatile Alarm Output with Programmable Trip Temperatures
" Programmable hysteresis threshold: off, 0?/SPAN>C, 1.5?/SPAN>C, 3?/SPAN>C, 6 ?/SPAN>C
" Schmitt Trigger, filtered inputs for Noise Suppression
" Low Operating current
? Temperature Sensor Active ~ 0.2mA (typ.)
" Industry Standard Green (Pb/Halide-free/RoHS Compliant) Package Options
? 8-pad Very Very Thin DFN (2 x 3 x 0.8mm)
Description
The Atmel
?/DIV>
AT30TS00 combines a temperature sensor, programmable over-
temperature alarms, and a 2-wire I
2
C/SMBus compatible serial interface into single
compact packages specifically designed for DRAM memory module applications.
However, the AT30TS00 is ideal for many other applications. The AT30TS00
converts its die temperature into digital values using internal analog-to-digital
converters (ADCs). The result of the conversion is held in a temperature register
and is readable at any time through the serial interface. The temperature sensor
converts temperatures from -20癈 to +125癈 to a digital word and provides an
accuracy of ?癈 (max.) in the temperature range +75癈 to +95癈. The temperature
sensor continuously monitors temperature and updates data in the temperature
register at least 8 times per second.
The AT30TS00 supports the industry standard 2-wire I
2
C/ SMBus serial Interface to
include a time out feature to help prevent system lock-ups.
The AT30TS00 has flexible user programmable internal registers to configure the
temperature sensor performance and response to over temperature conditions. The
device contains programmable high, low, and critical temperature limits. A dedicated
alarm output, VENT
, activates if the conversion result exceeds the value
programmed in the high temperature register. The device VENT
pin is configured
as active low and can be configured to operate as an interrupt or as a comparator
output.
The AT30TS00 features a shutdown mode that saves power by turning off
everything but the power-on reset and the 2-wire interface. The AT30TS00 VENT
and SDA pins are open-drains and require connection of a suitable external pull-up
resistor.
Digital Temperature
Sensor with
Two-Wire Interface
Atmel AT30TS00
Preliminary
8585BSEEPR8/10
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