PIC24F16KL402 Datasheet, PDF (98/260 Pages) Microchip Technology – Low-Power, Low-Cost, General Purpose 16-Bit Flash Microcontrollers with nanoWatt XLP Technology

PIC24F16KL402 FAMILY
REGISTER 9-1: OSCCON: OSCILLATOR CONTROL REGISTER (CONTINUED)
bit 7
CLKLOCK: Clock Selection Lock Enabled bit
If FSCM is enabled (FCKSM1 = 1):
1 = Clock and PLL selections are locked
0 = Clock and PLL selections are not locked and may be modified by setting the OSWEN bit
If FSCM is disabled (FCKSM1 = 0):
Clock and PLL selections are never locked and may be modified by setting the OSWEN bit.
bit 6
Unimplemented: Read as ‘0’
bit 5
LOCK: PLL Lock Status bit⁽²⁾
1 = PLL module is in lock or the PLL module start-up timer is satisfied
0 = PLL module is out of lock, the PLL start-up timer is running or PLL is disabled
bit 4
Unimplemented: Read as ‘0’
bit 3
CF: Clock Fail Detect bit
1 = FSCM has detected a clock failure
0 = No clock failure has been detected
bit 2
SOSCDRV: Secondary Oscillator Drive Strength bit⁽³⁾
1 = High-power SOSC circuit is selected
0 = Low/high-power select is done via the SOSCSRC Configuration bit
bit 1
SOSCEN: 32 kHz Secondary Oscillator (SOSC) Enable bit
1 = Enable secondary oscillator
0 = Disable secondary oscillator
bit 0
OSWEN: Oscillator Switch Enable bit
1 = Initiate an oscillator switch to the clock source specified by the NOSC<2:0> bits
0 = Oscillator switch is complete
Note 1:
2:
3:
Reset values for these bits are determined by the FNOSC Configuration bits.
Also resets to ‘0’ during any valid clock switch or whenever a non-PLL Clock mode is selected.
When SOSC is selected to run from a digital clock input, rather than an external crystal (SOSCSRC = 0),
this bit has no effect.
DS31037B-page 98
 2011 Microchip Technology Inc.