MCP9843/98243 Datasheet
http://www.microchip.com/stellent/images/mchpsiteimages/dwnfolder.gifMCP9843/98243 DS - Memory Module Temperature Sensor w/EEPROM for SPDMicrochip Technology Inc.’s MCP98243 digital temperature sensor converts temperature from -40°C and +125°C to a digital word. This sensor meets JEDEC Specification JC42.4 Mobile Platform Memory Module Thermal Sensor Component. It provides an accuracy of ±0.5°C/±1°C (typical/maximum) from +75°C to +95°C. In addition, this device has an internal 256 Byte EEPROM which can be used to store memory module and vendor information.
Parameter NameValue
Typical Accuracy (°)0.5
Max Input/ Supply Current (µA)500
Max. Accuracy @ 25° (°)+/- 3
Temp. Range (°C)-40 to +125
Operating Voltage Range (V)3.0 to 3.6
Device DescriptionSerial Output Temp Sensor
Features
* Meets JEDEC Specification JC42.4
Temperature Sensor + 2 Kbit Serial EEPROM
EEPROM for Serial Presence Detect (SPD)
Optimized for Voltage Range: 3.0V to 3.6V
Shutdown/Standby Current: 3 μA (max.)
2-wire I2C™/SMBus Interface
*meets 25ms to 35ms SMbus timeout
Available Packages:
- DFN-8, TDFN-8, UDFN-8, TSSOP-8
Serial EEPROM Features
Operating Current:
- Write → 1.1 mA (typical) for 3.5 ms (typical)
- Read → 100 μA (typical)
Permanent and Reversible Software Write Protect
Software Write Protection for the lower 1 Kbit
Organized as 1 block of 256 x 8-bit (2 Kbit)
Temperature Sensor Features
Class B — Temperature-to-Digital Converter
Sensor Accuracy:
- ±0.5°C/±1°C (typ./max.) → +75°C to +95°C
- ±1°C/±2°C (typ./max.) → +40°C to +125°C
- ±2°C/±3°C (typ./max.) → -20°C to +125°C
Operating Current: 200 μA (typical)
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