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