STEVAL-IFS003V1 STMicroelectronics, STEVAL-IFS003V1 Datasheet - Page 12

• Manufacturer Part Number: STEVAL-IFS003V1
• Description: BOARD STLM75/STDS75/ST72F651
• Manufacturer: STMicroelectronics

Specifications of STEVAL-IFS003V1

• Design Resources: STEVAL-IFS003V1 Gerber Files STEVAL-IFS003V1 Schematic STEVAL-IFS003V1 Bill of Materials
• Sensor Type: Temperature
• Sensing Range: -55°C ~ 125°C
• Interface: I²C
• Voltage - Supply: 7.5 V ~ 19 V
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ST72F651, STDS75, STLM75
• Silicon Manufacturer: ST Micro
• Silicon Core Number: STLM75/STDS75 And ST72F651AR6
• Kit Application Type: Sensing - Temperature
• Application Sub Type: Temperature Sensor
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-6238

Operation
2.2
2.3
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Thermal alarm function
The STDS75 thermal alarm function provides user-programmable thermostat capability and
allows the STDS75 to function as a standalone thermostat without using the serial interface.
The OS/INT output is the alarm output. This signal is an open drain output, and at power-up,
this pin is configured with active-low polarity by default.
Comparator mode
In comparator mode, each time a temperature-to-digital (T-to-D) temperature conversion
occurs, the new digital temperature is compared to the value stored in the T
registers. If a fault tolerance number of consecutive temperature measurements are greater
than the value stored in the T
For example, if the FT1 and FT0 bits are equal to “10” (fault tolerance = 4), four consecutive
temperature measurements must exceed T
OS/INT output is active, it will remain active until the first time the measured temperature
drops below the temperature stored in the T
When the thermostat is in comparator mode, the OS/INT can be programmed to operate
with any amount of hysteresis. The OS/INT output becomes active when the measured
temperature exceeds the T
and FT0 fault tolerance (FT) bits in the configuration register. The OS/INT then stays active
until the first time the temperature falls below the value stored in T
into shutdown mode does not clear OS/INT in comparator mode.
OS
OS
value a consecutive number of times as defined by the FT1
Doc ID 13297 Rev 8
register, the OS/INT output will be activated.
OS
HYS
to activate the OS/INT output. Once the
register.
HYS
. Putting the device
OS
and T
STDS75
HYS