Lcd Alarm Clock

laboratory 3f liquid crystal display Alarm time Fall 2009 Page 3f.1 Lab 3f LCD Alarm time This laboratory assignment accompanies the book, Embedded microcomputer Systems: Real conviction Interfacing, Second edition, by Jonathan W. Valvano, published by Thomson, copyright © 2006. Goals hone an existing hardware/ parcel embrasure between a LCD pageant and a microcomputer, chassis a hardware/software interface for three switches apply key wakeup, soma a hardware/software device driver for generating whizz tones on a speaker, Measure supply original infallible to run the embedded system, Implement a digital alarm clock clock. Valvano Chapter 3 on Basic Handshake Mechanisms, Valvano class 3.2.2 on key wakeup, Valvano subsection 8.3 on LCD fundamentals, Valvano Section 2.7 on device drivers. hypertext transfer protocol://users.ece.utexas.edu/~valvano/Datasheets/LCDOptrex.pdf http://users.ece.utexas.edu/~valvano/Datasheets/LCD.pdf http://users.ece.ut exas.edu/~valvano/Datasheets/LCD100.pdf http://users.ece.utexas.edu/~valvano/Datasheets/LCDHD44780.pdf OC_DP512.zip and LCD_9S12.zip projects, Lab3f_Artist.sch diagram Review fresher files Background Microprocessor-controlled LCD displays are widely use having replaced most(prenominal) of their LED counterparts, because of their low power and flexible display graphics.

This examine give illustrate how a handshaked parallel embrasure of the microcomputer will be used to output to the LCD display. The hardware for the display uses an industry standard HD44780 controller. The low-level software initialize s and outputs to the HD44780 controller. st! eady though our 9S12DP512 has many I/O pins, you will follow out the 4- crook data interface. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Vss (ground) Vdd (+5V power) Vlc (0 to +5 decline adjustment) RS (0=instruction, 1=data) R/W (0=write to LCD, 1= designate from LCD) E (enable) DB0 (data subprogram 0) DB1 (data bit 1) DB2 (data bit 2) DB3 (data bit 3) DB4 (data bit 4) DB5 (data bit 5) DB6 (data bit 6) DB7 (data bit 7) LCD display...If you want to apparel forth a full essay, order it on our website: OrderCustomPaper.com

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