Datasheet

PIC16F526
DS41326E-page 20  2010 Microchip Technology Inc.
4.5 OSCCAL Register
The Oscillator Calibration (OSCCAL) register is used
to calibrate the 8 MHz internal oscillator macro. It
contains 7 bits of calibration that uses a two’s
complement scheme for controlling the oscillator speed.
See Register 4-3 for details.
REGISTER 4-3: OSCCAL: OSCILLATOR CALIBRATION REGISTER
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
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•
•
0000001
0000000 = Center frequency
1111111
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•
•
1000000 = Minimum frequency
bit 0 Unimplemented: Read as ‘0’