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1 Introduction
This application note describes the Single Edge Nibble
Transmission (SENT) transmitter module in the S12VC 16-bit
microcontroller devices. The fundamentals of the Single Edge
Nibble Transmission protocol (SENT, SAE J2716) are
discussed in the overview section of the document. The further
sections describe in detail how to use the SENT module in a
typical application.
2 Overview
The Single Edge Nibble Transmission protocol is targeted for
use in those applications where high-resolution data is
transmitted from a sensor to the ECU. It can be considered as
an alternative to conventional sensors providing analog output
voltage and for PWM output sensors. It can be also considered
as a low-cost alternative to the Local Interconnect Network
(LIN) or Controller Area Network (CAN) communication
standards.
The electronic power steering, throttle position sensing, pedal
position sensing, airflow mass sensing, liquid level sensing
applications, etc., can be used as examples of target
applications for SENT compatible sensor devices.
Freescale Semiconductor
Document Number:AN4852
Application Note
Rev. 0, Dec 2013
Using the SENT Transmitter
Module in S12ZVC Devices
by:
Luis Olea
© 2013 Freescale Semiconductor, Inc.
Contents
1 Introduction................................................................1
2 Overview....................................................................1
3 Using the SENT transmitter module on
the S12ZVC...............................................................6
4 Stop mode.................................................................7
5 Example software.....................................................7
6 References.................................................................8
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