STCN75M2E STMicroelectronics, STCN75M2E Datasheet - Page 12

• Manufacturer Part Number: STCN75M2E
• Description: IC TEMP SENSOR DIGITAL SO-8
• Manufacturer: STMicroelectronics

Specifications of STCN75M2E

• Featured Product: STM32 Cortex-M3 Companion Products
• 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 (0.154", 3.90mm Width)
• Full Temp Accuracy: +/- 3 C
• Digital Output - Bus Interface: Serial (2-Wire, I2C)
• Digital Output - Number Of Bits: 9 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Ic Output Type: Digital
• Sensing Accuracy Range: ± 0.5°C
• Temperature Sensing Range: -55°C To +125°C
• Supply Current: 125µA
• Supply Voltage Range: 2.7V To 5.5V
• Sensor Case Style: SOIC
• No. Of Pins: 8
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Operation
2.3
2.4
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Comparator mode
In comparator mode, each time a temperature-to-digital (T-to-D) conversion occurs, the new
digital temperature is compared to the value stored in the T
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
inactive state.
Putting the device into shutdown mode does not clear OS/INT in comparator mode.
Interrupt mode
In interrupt mode, the OS/INT output becomes active when the measured temperature
exceeds the T
bits (FT1, FT0) value in the configuration register. Once activated, the OS/INT can only be
cleared by reading from any register (temperature, configuration, T
device. Once the OS/INT has been deactivated, it will only be reactivated when the
measured temperature falls below the T
the FT value. This mode is better suited for interrupt driven microprocessor based systems.
OS
OS
value a consecutive number of times as determined by the fault tolerance
register, the OS/INT output will be asserted.
Doc ID 13307 Rev 8
HYS
OS
HYS
value a consecutive number of times equal to
to activate the OS/INT output. Once the
register, whereupon it will reset to its
OS
and T
OS
HYS
, or T
registers. If a fault
HYS
) on the
STCN75