STLM75M2F STMicroelectronics, STLM75M2F Datasheet - Page 15

• Manufacturer Part Number: STLM75M2F
• Description: IC TEMP SNSR DGTL WATCHDOG 8SOIC
• Manufacturer: STMicroelectronics

Specifications of STLM75M2F

• Function: Temp Sensor, Watchdog
• Topology: ADC (Sigma Delta), Comparator, Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Full Temp Accuracy: +/- 3 C
• Digital Output - Bus Interface: Serial (2-Wire, I2C)
• Digital Output - Number Of Bits: 12 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• For Use With: 497-10508 - BOARD EVAL FOR MEMS SENSORS497-10048 - BOARD EVAL ACCELEROMETER497-8848 - EVAL DAUGHTER STLM75 8-SOIC497-6238 - BOARD STLM75/STDS75/ST72F651
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6926-2; STLM75M2F

STLM75
2.7
2.8
Temperature data format
Table 3
Temperature data for the temperature, T
two’s complement word.
The left-most bit in the output data stream contains temperature polarity information for
each conversion. If the sign bit is '0', the temperature is positive and if the sign bit is '1,' the
temperature is negative.
Table 3.
Bus timeout feature
The STLM75 supports an SMBus compatible timeout function which will reset the serial
I
between a START and STOP condition. If this occurs, the device will release the bus and
wait for another START condition.
2
C/SMBus interface if SDA is held low for a period greater than the timeout duration
shows the relationship between the output digital data and the external temperature.
Temperature
+125 °C
+0.5 °C
–0.5 °C
+25 °C
–25 °C
–40 °C
–55 °C
Relationship between temperature and digital output
0 °C
Doc ID 13296 Rev 12
OS
0 0000 0001
0 1111 1010
0 0011 0010
0 0000 0000
1 1111 1111
1 1100 1110
1 1011 0000
1 1001 0010
Binary
, and T
HYS
registers is represented as a 9-bit,
Digital output
1CEh
0FAh
1FFh
1B0h
032h
001h
000h
192h
HEX
Operation
15/40