AT30TS00-MAH-T Microchip

Features 11-bit ADC Temp-to-Digital Converter with 0.125C Resolution Temperature Sensor Compliant with Jedec JC42.4 Two-wire Serial Interface: I2C/SMBus compatible SMBus Timeout supported B-grade Accuracy 1C (max) for +75C to +95C 2C (max) for +40C to +125C Digital Temperature 3C (max) for -20C to +125C Sensor with Optimized for voltage range: 2.7V to 3.6V 100khz and 400khz Compatibility Two-Wire Interface Up to Eight Devices on a Single Bus Versatile Alarm Output with Programmable Trip Temperatures Atmel AT30TS00 Programmable hysteresis threshold: off, 0C, 1.5C, 3C, 6 C Schmitt Trigger, filtered inputs for Noise Suppression Preliminary 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 AT30TS00 combines a temperature sensor, programmable over- 2 temperature alarms, and a 2-wire I 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 -20C to +125C to a digital word and provides an accuracy of 1C (max.) in the temperature range +75C to +95C. The temperature sensor continuously monitors temperature and updates data in the temperature register at least 8 times per second. 2 The AT30TS00 supports the industry standard 2-wire I 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, EVENT, activates if the conversion result exceeds the value programmed in the high temperature register. The device EVENT 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 EVENT and SDA pins are open-drains and require connection of a suitable external pull-up resistor. 8585BSEEPR8/10 Figure 0-1. Pin Configuration Pin Name Description 8-WDFN A0 A2 Address Inputs V 8 1 A0 SDA Serial Data CC EVENT A1 7 2 SCL Serial Clock Input SCL 6 3 A2 SDA 5 4 GND Temperature Alert EVENT GND Ground Bottom View V Power Supply CC 1. *Absolute Maximum Ratings Operating Temperature ............... 40C to +125C *NOTICE: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to Storage Temperature ................ 65C to + 150C the device. This is a stress rating only and functional operation of the device at these or any other Voltage on Any Pin conditions beyond those indicated in the operational with Respect to Ground ..................... 1.0 V +5.0V sections of this specification are not implied. Exposure to absolute maximum rating conditions for Pin A0 ................................................. 1.0 V +12V extended periods may affect device reliability. Maximum Operating Voltage ............................ 4.3V DC Output Current ....................................... 5.0 mA 2 Atmel AT30TS00 Preliminary 8585BSEEPR8/10