PIC12F508 datasheet(26/106 Pages) MICROCHIP

tên linh kiện	PIC12F508

Giải thích chi tiết về linh kiện	8/14-Pin, 8-Bit Flash Microcontrollers

PDF	106 Pages

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nhà sản xuất	MICROCHIP [Microchip Technology]

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26 / 106 page

PIC12F508/509/16F505

DS41236D-page 24

Preliminary

4.6

OSCCAL Register

The Oscillator Calibration (OSCCAL) register is used to

calibrate the internal precision 4 MHz oscillator. It

contains seven bits for calibration

After you move in the calibration constant, do not

change the value. See Section 7.2.5 “Internal 4 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.

OSCCAL REGISTER (ADDRESS: 05h)

R/W-1

R/W-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’

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