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Using Timer 1 in Asynchronous Clock Mode

From Microchip Technology, Inc.
 

 
This application note discusses the use of the PIC16CXXX Timer1 module as an asynchronous clock. The Timer1 module has it own oscillator circuitry, which allows the timer to keep real-time, even when the device is in SLEEP mode. When the device is in sleep, the oscillator will continue to increment TMR1. An over-flow of the TMR1 register causes a TMR1 Overflow Interrupt (if enabled) and will wake the processor from sleep. The interrupt service routine can then perform the desired task.
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Topics of Interest
This application note discusses the use of the PIC16CXXX Timer1 module as an asynchronous clock. The Timer1 module has it own oscillator circuitry, which allows the timer to keep real-time, even when... (Read More)
This application note uses the Timer1 module, from a mid-range PIC16CXXX microcontroller, to control a low-power real-time clock. Timer1 was chosen because it has its own crystal which allows the... (Read More)
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AN879 Using the Microchip Ultra Low-Power Wake-Up Module current consumption. These types of applications Authors: Ruan Lourens require a low-power periodic wake-up and can be Jose Benevides... (Read More)
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