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AN552

Microchip
Part Number AN552
Manufacturer Microchip
Description Implementing Wake-up on Key Stroke
Published Mar 8, 2014
Detailed Description M Author: AN552 SUMMARY The PIC16CXXX is ideally suited to interface directly to a keypad application. Built in pull-up...
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AN552
AN552

Overview
M Author: AN552 SUMMARY The PIC16CXXX is ideally suited to interface directly to a keypad application.
Built in pull-up resistors and very low current consumption during sleep make it a very good candidate for battery powered remote operations and applications.
Appendix A provides an example of the code.
Performance: Code Size RAM Used 64 words 0 bytes Implementing Wake-up on Key Stroke Stan D’Souza Microchip Technology Inc.
INTRODUCTION Microchip's PIC16CXXX microcontroller family are ideally suited to directly interface to a keypad.
The high 4-bits of PORTB (RB7:RB4) have internal pull-ups and can trigger a “change on state” interrupt.
This interrupt, if enabled, will wake the microcon...


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