PIC10F220 データシートの表示（PDF） - Microchip Technology

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PIC10F220

High-Performance Microcontrollers with 8-bit A/D

Microchip Technology 

PIC10F220/222

4.6 OSCCAL Register

The Oscillator Calibration (OSCCAL) register is used to

calibrate the internal precision 4/8 MHz oscillator. It

contains seven bits for calibration.

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.

After you move in the calibration constant, do not

change the value. See Section 8.2.2 “Internal 4/8 MHz

Oscillator”.

REGISTER 4-3: OSCCAL – OSCILLATOR CALIBRATION REGISTER (ADDRESS: 05h)

R/W-1

CAL6

bit 7

R/W-1

CAL5

R/W-1

CAL4

R/W-1

CAL3

R/W-1

CAL2

R/W-1

CAL1

R/W-1

CAL0

R/W-0

FOSC4

bit 0

Legend:

R = Readable bit

-n = Value at POR

W = Writable bit

‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-1

bit 0

Note 1:

CAL<6:0>: Oscillator Calibration bits

0111111 = Maximum frequency

•

•

•

0000001

0000000 = Center frequency

1111111

•

•

•

1000000 = Minimum frequency

FOSC4: INTOSC/4 Output Enable bit(1)

1 = INTOSC/4 output onto GP2

0 = GP2/T0CKI applied to GP2

Overrides GP2/T0CKI control registers when enabled.

DS41270E-page 18

© 2007 Microchip Technology Inc.

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