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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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MPXM2102AS Datasheet(PDF) 106 Page - Motorola, Inc |
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MPXM2102AS Datasheet(HTML) 106 Page - Motorola, Inc |
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106 / 670 page  AN1611 2–70 Motorola Sensor Device Data www.motorola.com/semiconductors SOFTWARE SOURCE/ASSEMBLY PROGRAM CODE ****************************************************************************** * * * Accelerometer Demo Car Version 2.0 * * * * The following code is written for MC68HC705B16 using MMDS05 software * * Version 1.01 * * CASM05 – Command line assembler Version 3.04 * * P & E Microcomputer Systems, Inc. * * * * Written by : C.S. Chua * * 29 August 1996 * * * * * * Copyright Motorola Electronics Pte Ltd 1996 * * All rights Reserved * * * * This software is the property of Motorola Electronics Pte Ltd. * * * * Any usage or redistribution of this software without the express * * written consent of Motorola is strictly prohibited. * * * * Motorola reserves the right to make changes without notice to any * * products herein to improve reliability, function, or design. Motorola * * does not assume liability arising out of the application or use of any * * product or circuit described herein, neither does it convey license * * under its patents rights nor the rights of others. Motorola products are * * not designed, intended or authorised for use as component in systems * * intended to support or sustain life or for any other application in * * which the failure of the Motorola product could create a situation * * a situation where personal injury or death may occur. Should the buyer * * shall indemnify and hold Motorola products for any such unintended or * * unauthorised application, buyer shall indemnify and hold Motorola and * * its officers, employees, subsidiaries, affiliates, and distributors * * harmless against all claims, costs, damages, expenses and reasonable * * attorney fees arising out of, directly or indirectly, any claim of * * personal injury or death associated with such unintended or unauthorised * * use, even if such claim alleges that Motorola was negligent regarding * * the design or manufacture of the part. * * * * Motorola and the Motorola logo are registered trademarks of Motorola Inc.* * * * Motorola Inc. is an equal opportunity/affirmative action employer. * * * ****************************************************************************** ****************************************************************************** * * * Software Description * * * * This software is used to read the output of the accelerometer MMA2200W * * and display it to a LCD as gravity force. It ranges from –55g to +55g * * with 0g as zero acceleration or constant velocity. The resolution is * * 0.5g. * * * * The program will read from the accelerometer and hold the maximum * * deceleration value for about 3.0 seconds before resetting. At the same * * time, the buzzer/LED is activated if the impact is more than 7.0g. * * However, if the maximum deceleration changes before 3.0 seconds, it * * will update the display using the new value. Note that positive value * * implies deceleration whereas negative value implies acceleration * * * ****************************************************************************** ****************************************** * * * Initialisation * * * ****************************************** PORTA EQU $00 ; Last digit PORTB EQU $01 ; Second digit (and negative sign) PORTC EQU $02 ; First digit (and decimal point) ADDATA EQU $08 ; ADC Data ADSTAT EQU $09 ; ADC Status PLMA EQU $0A ; Pulse Length Modulator (Output to Buzzer) MISC EQU $0C ; Miscellaneous Register (slow/fast mode) TCONTROL EQU $12 ; Timer control register TSTATUS EQU $13 ; Timer Status Register OCMPHI1 EQU $16 ; Output Compare Register 1 High Byte Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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