The TC72 is a digital CMOS silicon temperature
sensor that provides an accurate digital temperature
measurement. Data is converted from an internal
diode temperature-sensing element to a digital format
that can be directly interfaced to a microcontroller. The
TC72 sensor offers many system-level advantages,
including the integration of the sensor and signal-
conditioning circuitry in a small integrated circuit (IC)
package. The TC72 also has an One-shot Conversion
mode, which performs a single temperature measure-
ment and then goes into power-saving Shutdown
mode. The One-shot Conversion mode makes this
sensor a good choice for power-critical, portable
applications. AN940
Interfacing the TC72 SPI Digital Temperature Sensor to a
PICmicro Microcontroller
Author: Jim Lepkowski and Steve Bible The TC72 digital temperature sensor is especially
Microchip Technology Inc. suited for embedded systems due to its SPI interface,
which serves to provide a straightforward and easy way
to interface to a microcontroller. This application note
INTRODUCTION will discuss system integration, firmware implementa-
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