STLM75M2F STMicroelectronics, STLM75M2F Datasheet - Page 19

• 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
3.1.5
Note:
3.2
Note:
Hysteresis temperature register (T
T
programmable lower trip-point temperature for the thermal alarm in two’s complement
format (see
0000).
The format of this register is the same as that of the temperature register. The MSB position
contains the sign bit for the digital temperature and bit14 contains the temperature MSB.
Table 8.
These are comparable formats to the DS75 and LM75.
Power-up default conditions
The STLM75 always powers up in the following default states:
●
●
●
●
●
●
After power-up these conditions can be reprogrammed via the serial interface.
STLM75
HYS
Bytes
Bits
Keys: SB = two’s complement sign bit
Thermostat mode = comparator mode
Polarity = active-low
Fault tolerance = 1 fault (i.e., relevant bits set to '0' in the configuration register)
T
T
Register pointer = 00 (temperature register)
register is a two-byte (16-bit) READ/WRITE register that stores the user-
OS
HYS
= 80 °C
TMSB = temperature MSB
TLSB = temperature LSB
TD = temperature data
MSB
= 75 °C
SB
15
Table
T
OS
and T
TMSB
8). This register defaults to 75 °C at power-up (i.e., 0100 1011 0000
14
HYS
TD TD TD TD TD TD
13
HS byte
register format
Doc ID 13296 Rev 12
12
TMSB
11
10
HYS
9
)
8
TLSB
9-bit
7
6
0
5
0
TLSB
Functional description
LS byte
4
0
3
0
2
0
1
0
19/40
LSB
0
0