PIC16F15213 datasheet(169/439 Pages) MICROCHIP

169 / 439 page

20.6.4

Timer1 Gate Single Pulse Mode

When Timer1 Gate Single Pulse mode is enabled, it is possible to capture a single pulse gate event. Timer1 Gate

Single Pulse mode is first enabled by setting the GSPM bit. Next, the GGO/DONE must be set. The Timer1 will

be fully enabled on the next incrementing edge. On the next trailing edge of the pulse, the GGO/DONE bit will

automatically be cleared. No other gate events will be allowed to increment Timer1 until the GGO/DONE bit is once

again set in software.

Figure 20-6. Timer1 Gate Single Pulse Mode

TMRxGIF

TIMER1

TxGVAL

TxCKI

TxG_IN

TxGGO/

DONE

TxGSPM

TxGPOL

TMRxGE

Set by software

Counting enabled on

rising edge of TxG

Cleared by software

Cleared by hardware on

falling edge of TxGVAL

Cleared by

software

Set by hardware on

falling edge of TxGVAL

Clearing the GSPM bit will also clear the GGO/DONE bit. See the figure below for timing details. Enabling the Toggle

mode and the Single Pulse mode simultaneously will permit both sections to work together. This allows the cycle

times on the Timer1 gate source to be measured. See the figure below for timing details.

PIC16F15213/14/23/24/43/44

TMR1 - Timer1 Module with Gate Control

and its subsidiaries

Data Sheet

DS40002195E-page 169

PIC16F15213 Datasheet(PDF) 169 Page - Microchip Technology