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TC77

Digital Temperature Sensor with SPI Interface

Status: In Production

Features:

  • 3-wire SPI™/Microwire Compatible Interface
  • 13-Bit Resolution (0.0625°C/Bit)
  • ±1°C Accuracy from +25°C to +65°C
  • ±2°C Accuracy from -40°C to +85°C
  • ±3°C Accuracy from -55°C to +125°C
  • Low Operating Current: 250 uA (typical)
  • Shutdown Mode: 1 uA (max)
  • Space Saving SOT-23 Package Available
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The TC77 is a serially accessible digital temperature sensor particularly suited for low cost and small form-factor applications. Temperature data is converted from the on-board thermal sensing element and made available at anytime as a 13-bit two's compliment digital word. Communication with the TC77 is accomplished via an SPI/ Microwire compatible interface. The device features a 12-bit plus sign temperature resolution of 0.0625°C per LSB.

The TC77 offers a temperature accuracy of +/-1.0°C (max) over the temperature range of +25°C to +65°C. The SHUTDOWN bits in the Configuration register can be used to activate the low power Standby mode (0.1 uA typical). When operating, the TC77 consumes only 250 µA (typ), 400 µA max. Small size, low installed cost and ease of use make the TC77 an ideal choice for implementing thermal management in a variety of systems.

Additional Features
    • 3-wire SPI™/Microwire Compatible Interface
    • 13-Bit Resolution (0.0625°C/Bit)
    • ±1°C Accuracy from +25°C to +65°C
    • ±2°C Accuracy from -40°C to +85°C
    • ±3°C Accuracy from -55°C to +125°C
    • Low Operating Current: 250 uA (typical)
    • Shutdown Mode: 1 uA (max)
    • Space Saving SOT-23 Package Available
Parametrics
Name
Value
# Temps Monitored
1
Typical Accuracy (°)
0.5
Max. Accuracy @ 25° (°)
1
Max Input/ Supply Current (µA)
250
Temp. Range (°C)
-55 to +125
Operating Voltage Range (V)
+2.7 to +5.5
Typ Supply Current (µA)
250
Resistance Error Correction
N/A
Beta Compensation
N/A
Ideality Factor
N/A
Device Description
Digital Temperature Sensor

Documents

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Data Sheets

TC77 Datasheet
  
291KB

Supporting Collateral

ADN011 – Flexible Integrated Temp Sensors Lower System Costs
  
650KB

Application Notes

Download All
AN679 - Temperature Sensing Technologies
  
177KB
AN913 - Interfacing the TC77 Thermal Sensor to a PICmicro® Microcontroller
  
491KB
AN871 - Solving Thermal Measurement Problems Using The TC72 And TC77 Digital Silicon Temperature Sensors
  
438KB
AN929 - Temperature Measurement Circuits for Embedded Applications
  
448KB

Brochures

Analog and Interface Product Selector Guide
  
4832KB
Quick Guide to Microchip Development Tools
  
6020KB
Serial Output Temperature Sensor Family
  
104KB
Utility Metering Brochure
  
3370KB
Analog & Interface Guide (Volume 2)
  
1067KB
Temperature Sensor Design Guide
  
687KB

User Guides

TC77 Thermal Sensor PICtail Demo Board User's Guide
  
480KB

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
PICkit Serial SPI demo board
PICkit Serial SPI demo board ( PKSERIAL-SPI1 )

The PICkit™ Serial SPI Demo Board was designed to easily connect to the PICkit Serial Analyzer (DV164122). The PICkit Serial Analyzer provides the SPI master mode serial communications and power for the PICkit™ Serial SPI Demo Board. The devices on the demo board operate in the SPI slave mode and can easily be connected to virtually any demo or development board by connecting the...

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8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board
8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board ( SOIC8EV )

This is a blank PCB that allows the operation of Microchip Technology’s 8-pin devices to be easily evaluated. Each device pin is connected to a pull-up resistor, a pull-down resistor, an in-line resistor, and a loading capacitor. The PCB pads allow through hole or surface mount connectors to be installed to ease connection to the board. Additional passive component footprints are on the...

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Dimension
Solder Composition
JEDEC Indicator
RoHS
China EFUP
TC77-3.3MOA
0.078000
0.250000
8
SOIC
.150In(3.90mm)
Matte Tin
e3
TC77-3.3MOATR
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
TC77-5.0MOA
0.078000
0.250000
8
SOIC
.150In(3.90mm)
Matte Tin
e3
TC77-5.0MOATR
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
TC77-3.3MCTTR
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC77-5.0MCTTR
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC77-5.0MCTTR-VAO
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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