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STTS2002
(Rev.:2011)

2.3 V memory module temperature sensor with a 2 Kb SPD EEPROM

STMicroelectronics 

STTS2002

2.3 V memory module temperature sensor

with a 2 Kb SPD EEPROM

Features

■ 2.3 V memory module temperature sensor with

integrated 2 Kb SPD EEPROM

■ Forward compatible with JEDEC TSE 2002a2

and backward compatible with STTS424E02

■ Operating temperature range:

– –40 °C to +125 °C

■ Single supply voltage: 2.3 V to 3.6 V

■ 2 mm x 3 mm TDFN8, height: 0.80 mm (max)

– JEDEC MO-229, WCED-3 compliant

■ RoHS compliant, halogen-free

Temperature sensor

■ Temperature sensor resolution:

programmable (9-12 bits)

0.25 °C (typ)/LSB - (10-bit) default

■ Temperature sensor accuracy (max):

– ± 1 °C from +75 °C to +95 °C

– ± 2 °C from +40 °C to +125 °C

– ± 3 °C from –40 °C to +125 °C

■ ADC conversion time: 125 ms (max) at default

resolution (10-bit)

■ Typical operating supply current: 160 µA

(EEPROM standby)

■ Temperature hysteresis selectable set points

from: 0, 1.5, 3, 6.0 °C

■ Supports SMBus timeout 25 ms - 35 ms

TDFN8

2 mm x 3 mm

(max height 0.80 mm)

2 Kb SPD EEPROM

■ Functionality identical to ST’s M34E02 SPD

EEPROM

■ Permanent and reversible software data

protection for the lower 128 bytes

■ Byte and page write (up to 16 bytes)

■ Self-time WRITE cycle (5 ms, max)

■ Automatic address incrementing

Two-wire bus

■ Two-wire SMBus/I2C - compatible serial

interface

■ Supports up to 400 kHz transfer rate

■ Does not initiate clock stretching

March 2011

Doc ID 15389 Rev 5

1/52

www.st.com

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