12C508 datasheet(18/113 Pages) MICROCHIP

tên linh kiện	12C508

Giải thích chi tiết về linh kiện	8-Pin, 8-Bit CMOS Microcontrollers

PDF	113 Pages

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PIC12C5XX

DS40139E-page 18

4.5

OSCCAL Register

The Oscillator Calibration (OSCCAL) register is used to

calibrate the internal 4 MHz oscillator. It contains four to

six bits for calibration.

Increasing the cal value

increases the frequency. See Section 7.2.5 for more

information on the internal oscillator.

FIGURE 4-6:

OSCCAL REGISTER (ADDRESS 05h) FOR PIC12C508 AND PIC12C509

FIGURE 4-7:

OSCCAL REGISTER (ADDRESS 05h) FOR PIC12C508A/C509A/CR509A/12CE518/

12CE519

R/W-0

R/W-1

R/W-0

U-0

CAL3

CAL2

CAL1

CAL0

—

= Readable bit

W = Writable bit

= Unimplemented bit,

read as ‘0’

- n = Value at POR reset

bit7

bit0

bit 7-4:

CAL<3:0>: Calibration

bit 3-0: Unimplemented: Read as ’0’

R/W-1

R/W-0

U-0

CAL5

CAL4

CAL3

CAL2

CAL1

CAL0

—

= Readable bit

W = Writable bit

= 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’

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