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AN552

Download Application Note
Title
Title
Implementing Wake Up on Keystroke
Name
Name
AN552
Date
Date
06/24/2015
Application Categories
Application Categories
Medical / Homecare Glucometer
Product Categories
Product Categories
8-bit MCU
Description
Description
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 microcontroller from SLEEP. In most battery powered applications, a microcontroller is exercised when a key is pressed (e.g., in a remote keyless entry system). The life of the battery can be extended by using PIC16CXXX microcontrollers. This is done by putting the PIC16CXXX microcontroller into SLEEP mode for most of the time and wake-up only when a key is pressed.

Files

Title Title Download Date Size
AN552 Source Code - Implementing Wake Up on Keystroke 8.2 KB 06/24/2015 AN552 Source Code - Implementing Wake Up on Keystroke Download 06/24/2015 8.2 KB