PIC16LF1454 Datasheet, PDF (74/418 Pages) Microchip Technology – 14/20-Pin Flash, 8-Bit USB Microcontrollers with XLP Technology

PIC16(L)F1454/5/9
5.8.5
ACTIVE CLOCK TUNING UPDATE
DISABLE
When the ACT is enabled, the OSCTUNE register is
continuously updated every ACT_clk period. Setting
the ACT Update Disable bit can be used to suspend
updates to the OSCTUNE register, without disabling
the ACT. If the 16 MHz internal oscillator drifts out of the
accuracy range, the ACT Status bits will change and an
interrupt can be generated to notify the application.
Clearing the ACTUD bit will engage the ACT updates
to OSCTUNE and an interrupt can be generated to
notify the application.
5.8.6 INTERRUPTS
The ACT will set the ACT Interrupt Flag, (ACTIF) when
either of the ACT Status bits (ACTLOCK or ACTORS)
change state, regardless if the interrupt is enabled,
(ACTIE = 1). The ACTIF and ACTIE bits are in the PIRx
and PIEx registers, respectively. When ACTIE = 1, an
interrupt will be generated whenever the ACT Status
bits change.
The ACTIF bit must be cleared in software, regardless
of the interrupt enable setting.
5.8.7 OPERATION DURING SLEEP
This ACT does not run during Sleep and will not gener-
ate interrupts during Sleep.
DS41639A-page 74
Preliminary
 2012 Microchip Technology Inc.