Datasheet

PIC12F510/16F506

4.5 OSCCAL Register

The Oscillator Calibration (OSCCAL) register is used to

calibrate the internal precision 4/8 MHz oscillator. It

contains seven bits for calibration

After you move in the calibration constant, do not change

the value. See Section 10.2.5 “Internal 4/8 MHz RC

Oscillator”.

Note: Erasing the device will also erase the pre-

programmed internal calibration value for

the internal oscillator. The calibration

value must be read prior to erasing the

part so it can be reprogrammed correctly

later.

R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 U-0

CAL6 CAL5 CAL4 CAL3 CAL2 CAL1 CAL0 —

bit 7 bit 0

Legend:

R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’

-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown

bit 7-1

CAL<6:0>: Oscillator Calibration bits

0111111 = Maximum frequency

•

0000001

0000000 = Center frequency

1111111

•

1000000 = Minimum frequency

bit 0

Unimplemented: Read as ‘0’