ON releases the CAT34TS02 temperature sensor

ON Semiconductor has released the second device in a line of temperature sensors bought from Catalyst Semiconductor.

The CAT34TS02 combines a 12-bit (plus Sign bit) digital output temperature sensor with two kilobits (Kb) of Serial Presence Detect (SPD) EEPROM for DDR3 applications in high-speed PCs and laptops, graphics cards, servers, telecom equipment and base stations, environmental control systems and industrial process control equipment.

The CAT34TS02 is compliant to JEDEC specification JC42.4, providing +/-1C temperature sensing accuracy from 75 to 95C and +/-3C accuracy from +20 to +100C, across the device's supply voltage range of 3.0 to 3.6V.

It measures and records the system temperature approximately 10 times a second, with readings compared with three trigger-limits stored in the internal memory registers.

Readings can be retrieved by the host system via the I2C/SMBus interface, and over- and under-limit conditions are signalled on the open-drain Event pin.

For general-purpose temperature sensor applications, integrating the temperature sensor with non-volatile EEPROM eliminates the need for external memory to store sensor and threshold configurations.

The CAT34TS02 non-volatile memory retains custom-configured sensor and threshold values at power-up, resulting in a simple, space-saving and cost-effective solution.

The integrated 2 Kb SPD EEPROM is internally organised as 16 pages of 16 bytes each, for a total of 256 bytes.

The EEPROM features a 16-byte page-write buffer, supports the standard (100 kilohertz - kHz) and fast (400 kHz) I2C protocols and features permanent and reversible software write-protection, defined as standard for all DDR3 DIMM modules.

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