Datasheet

PIC16C505
DS40192D-page 16  1999-2012 Microchip Technology Inc.
4.5 OSCCAL Register
The Oscillator Calibration (OSCCAL) register is used to
calibrate the internal 4 MHz oscillator. It contains six
bits for calibration
After you move in the calibration constant, do not
change the value. See Section 7.2.5
Note: Please note that 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 repro-
grammed correctly later.
REGISTER 4-3: OSCCAL REGISTER (ADDRESS 05h) PIC16C505
R/W-1 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 U-0
CAL5 CAL4 CAL3 CAL2 CAL1 CAL0
— — R = Readable bit
W = Writable bit
U = Unimplemented bit,
read as ‘0’
- n = Value at POR reset
bit7 bit0
bit 7-2: CAL<5:0>: Calibration
bit 1-0: Unimplemented read as ‘0’