STTS2002_11 datasheet(29/52 Pages) STMICROELECTRONICS

No de pièce	STTS2002

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

PDF	52 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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STTS2002

Temperature sensor registers

Doc ID 15389 Rev 5

29/52

4.7

Temperature resolution register (read/write)

With this register a user can program the temperature sensor resolution from 9-12 bits as

shown below. The power-on default is always 10 bit (0.25 °C/LSB). The selected resolution

is also reflected in bits (4:3) (TRES1:TRES0) of the capability register.

The default value is 01 for TRES register.

4.8

SMBus timeout

The STTS2002 supports the SMBus timeout feature which is turned on by default. If the

host holds SCL low for more than ttimeout (max), the STTS2002 resets itself and releases the

bus. This feature is supported even when the device is in shutdown mode and when the

device is driving SDA low.

Table 21.

Temperature resolution register (TRES) (read/write)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

000

Resolution section register

Resolution bits

Table 22.

TRES details

Resolution register bits

Bit1

Bit0

°C/LSB

Bits

Conversion time (max)

0.5

65 ms

0.25

125 ms (default)

0.125

250 ms

0.0625

500 ms

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