AT30TSE002A Integrated Temperature Sensor with SEEPROM DATASHEET Features Integrated Temperature Sensor (TS) + 2Kb Serial EEPROM Standard voltage operation Optimized for voltage range: 2.7V to 3.6V 100khz and 400khz compatibility 2 2-wire serial interface: I C/SMBus compatible SMBus Timeout supported Schmitt Trigger, filtered inputs for noise suppression Industry standard green (Pb/Halide-free/RoHS compliant) package options 8-lead Very Very Thin DFN (2 x 3 x 0.8mm) Serial EEPROM Features Permanent and reversible software write protection for the first-half of the array Software procedure to verify write protect status Internally organized as one block of 256-bytes (256 x 8) Supports byte and Page Write operation Write 1, 2, 3, and up to 16 bytes at a time Self-timed write cycle (5ms max) High-reliability Endurance: 1 million write cycles Data retention: 100 years Low operating current EEPROM write ~1.5mA (typical) EEPROM read ~ 0.2mA (typical) Temperature Sensor Features 11-bit ADC temp-to-digital converter with 0.125C resolution Programmable hysteresis threshold: off, 0C, 1.5C, 3C, and 6 C Accuracy 0.5C (typ.) for +75C to +95C 1.0C (typ.) for +20C to +110C 2.0C (typ.) for -20C to +125C Low operating current Temperature sensor active ~ 0.2mA (typical) Atmel-8852A-SEEPROM-AT30TSE002A-Datasheet 072013Figure 1. Pin Configuration Pin Function A , A , A Address Inputs 8-WDFN 0 1 2 V 8 1 A SDA Serial Data CC 0 EVENT 7 2 A 1 SCL Serial Clock Input SCL 6 3 A 2 5 4 SDA GND Temperature Alert EVENT Bottom view GND Ground V Power Supply CC 1. Description Atmel AT30TSE002A is a combination Serial EEPROM and temperature sensor device containing 2048-bits of Serially Electrically Erasable and Programmable Read-Only Memory (EEPROM) organized as 256-bytes of eight bits each and could be used to store memory module and vendor information. The EEPROM operation is tailored specifically for DRAM Memory Modules Serial Presence Detect (SPD). The first 128-bytes of the memory incorporate a permanent and a Reversible Software Write Protection (WP) feature. Once the Permanent Software WP is enabled, by sending a special command, it cannot be reversed however, once the reversible software WP is enabled, it can be reversed by sending a special command. The integrated temperature sensor converts temperatures from -20C to +125C to a digital word and provides an accuracy of 1.0C (max.) for the temperature range +75C to +95C. The temperature sensor continuously monitors temperature and updates data in the temperature register at least eight times per second. Temperature data is latched internally by the device and may be read by software via a microcontroller at anytime. The AT30TSE002A 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. The device EVENT pin is configured as active low and can be configured to operate as an interrupt or as a comparator output. Manufacturer and Device ID Registers provide the ability to confirm the identity of the device. The AT30TSE002A supports the industry 2 standard 2-wire I C/ SMBus serial interface to include time out feature to help prevent system lock-ups. 2 AT30TSE002A DATASHEET Atmel-8852A-SEEPROM-AT30TSE002A-Datasheet 072013