Based on the industry standard "LM75" compatible digital temperature sensor, the Atmel AT30TSE754 combines precision temperature monitoring, nonvolatile (NVM) registers, and 4K-bits of Serial EEPROM. The value-added NVM registers allow user configuration settings to be permanently retained across power cycles to simplify the system design, reduce processor startup code, and improve system reliability. The integrated Serial EEPROM is a drop in replacement for a standalone Serial EEPROM saving board space and reducing BOM costs. The Serial EEPROM can be used to store system configuration and vital product data. In addition, the AT30TSE754 includes programmable high and low temperature alarms, user-selectable temperature resolution up to 12 bits, and an I2C/SMBus™ compatible serial interface.
The AT30TSE754 converts temperatures from -40°C to +125°C to a digital word and provides a typical accuracy of ±0.5°C over the operating temperature range of 0°C to +85°C. The device is factory calibrated and requires no external components to help provide a cost effective solution. To reduce current consumption and save power, the AT30TSE754 features a shutdown mode that turns off all internal circuitry except for the internal power-on reset and serial interface circuits. In addition, the device features a power saving one-shot mode that allows the device to make a temperature measurement and update the temperature register and then return to shutdown mode.