DSPIC30F6012A Microchip Technology Inc., DSPIC30F6012A Datasheet - Page 151

• Manufacturer Part Number: DSPIC30F6012A
• Description: Dspic30f6011a/6012a/6013a/6014a High-performance Digital Signal Controllers
• Manufacturer: Microchip Technology Inc.

20.2.8
A write to the OSCCON register is intentionally made
difficult because it controls clock switching and clock
scaling.
To write to the OSCCON low byte, the following code
sequence must be executed without any other
instructions in between:
Byte write is allowed for one instruction cycle. Write the
desired value or use bit manipulation instruction.
To write to the OSCCON high byte, the following
instructions must be executed without any other
instructions in between:
Byte write is allowed for one instruction cycle. Write the
desired value or use bit manipulation instruction.
20.3
The oscillators are controlled with two SFRs,
OSCCON and OSCTUN and one Configuration
register, FOSC.
© 2006 Microchip Technology Inc.
Byte Write “0x46” to OSCCON low
Byte Write “0x57” to OSCCON low
Byte Write “0x78” to OSCCON high
Byte Write “0x9A” to OSCCON high
Note:
Oscillator Control Registers
PROTECTION AGAINST
ACCIDENTAL WRITES TO OSCCON
The description of the OSCCON and
OSCTUN SFRs, as well as the FOSC
Configuration register provided in this
section
dsPIC30F6011A/6012A/6013A/6014A
devices in the dsPIC30F product family.
are
dsPIC30F6011A/6012A/6013A/6014A
applicable
only
to
Preliminary
the
DS70143C-page 149