User guide

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Freescale Semiconductor

Users Guide

Document Number:

S12XHY256ACDUG

Rev. 0, 10/2010

Contents

• Preliminary—Subject to Change Without Notice

1 S12XHY Dashboard

Cluster Demo Board

The dashboard is run with the S12XHY 16-bit MCU,

which is responsible for driving all the board

functionality. The hardware comes complete with four

VID-23 shaft illuminated motors, a 160 segment LCD

display, Molex CAN and LIN connections, a

piezoelectric speaker to demonstrate sound capability,

and a series of switches and LEDs to emulate standard

dashboard functionality.

1 S12XHY Dashboard Cluster Demo Board. . . . . . . . . . . . 1

2 How to setup and operate the demo board . . . . . . . . . . . 2

3 FAQs and Talking Points. . . . . . . . . . . . . . . . . . . . . . . . . 4

4 Additional Resources and Materials . . . . . . . . . . . . . . . . 5

16-bit MCU: S12XHY256

Automotive Cluster Demo

by: Jose M. Cisneros

Steven McLaughlin

Applications Engineer

Microcontroller Solutions Group, Scotland

Summary of content (6 pages)

PAGE 1
Freescale Semiconductor Users Guide Document Number: S12XHY256ACDUG Rev. 0, 10/2010 16-bit MCU: S12XHY256 Automotive Cluster Demo by: 1 Jose M. Cisneros Steven McLaughlin Applications Engineer Microcontroller Solutions Group, Scotland S12XHY Dashboard Cluster Demo Board The dashboard is run with the S12XHY 16-bit MCU, which is responsible for driving all the board functionality.
PAGE 2
How to setup and operate the demo board Figure 1. S12XHY dashboard cluster demo board 2 How to setup and operate the demo board The demo is very straightforward to setup. It requires a 12 volt DC supply, which is connected at the bottom right side of the board as shown in Figure 1. Switch 5 should be set to the on position (This demo does not use switch 4, ignition switch, so it can be in any state).
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How to setup and operate the demo board Figure 2. Flow diagram with images of demo operation Besides driving the motors and LCD, the demo incorporates some software solutions to enhance its functionality. • Pressing switch 9 activates a horn sound and pressing switch 8 toggles the cruise control on and off. • The MENU switch, allows the user to scroll through the odometer, trip A meter, and trip B meter. This is indicated clearly on the LCD and the user will notice the digits change.
PAGE 4
FAQs and Talking Points • — LEFT TURN, switch 9, controls TEMP indicator light. Pressing the LEFT TURN switch for a few second (after the horn sound has passed), will turn off TEMP indicator for 10s. — RIGHT TURN, switch 8, controls RPM indicator light. Pressing the RIGHT TURN switch for a second will turn off RPM indicator for 10s. This demo is capable of identifying RTZ (return-to-zero) position either by SSD (Stepper Stall Detection) hardware module or by SSD software logic at demo power up.
PAGE 5
Additional Resources and Materials — Yes, you can. Since a PWM signal being fed via an amplifier to the piezoelectric speaker, it is possible to alter the PWM signal, and be more creative with it. 4 Additional Resources and Materials Application Notes: These application notes are available at http://www.freescale.com • Introduction to the Stepper Stall Detector Module (document AN3330).
PAGE 6
Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. How to Reach Us: Home Page: www.freescale.com Web Support: http://www.freescale.