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PIC12CE673 数据表(PDF) 21 Page - Microchip Technology |
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PIC12CE673 数据表(HTML) 21 Page - Microchip Technology |
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21 / 130 page ![]() 1997-2013 Microchip Technology Inc. DS30561C-page 21 PIC12C67X 4.2.2.7 OSCCAL REGISTER The Oscillator Calibration (OSCCAL) Register is used to calibrate the internal 4 MHz oscillator. It contains four bits for fine calibration and two other bits to either increase or decrease frequency. REGISTER 4-7: OSCCAL REGISTER (ADDRESS 8Fh) R/W-0 R/W-1 R/W-1 R/W-1 R/W-0 R/W-0 U-0 U-0 CAL3 CAL2 CAL1 CAL0 CALFST CALSLW — — R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ - n = Value at POR reset bit7 bit0 bit 7-4: CAL<3:0>: Fine Calibration bit 3: CALFST: Calibration Fast 1 = Increase frequency 0 = No change bit 2: CALSLW: Calibration Slow 1 = Decrease frequency 0 = No change bit 1-0: Unimplemented: Read as ’0’ Note: If CALFST = 1 and CALSLW = 1, CALFST has precedence. |
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