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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC18F242 датащи(PDF) 119 Page - Microchip Technology |
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PIC18F242 датащи(HTML) 119 Page - Microchip Technology |
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119 / 332 page  © 2006 Microchip Technology Inc. DS39564C-page 117 PIC18FXX2 14.0 CAPTURE/COMPARE/PWM (CCP) MODULES Each CCP (Capture/Compare/PWM) module contains a 16-bit register which can operate as a 16-bit Capture register, as a 16-bit Compare register or as a PWM Master/Slave Duty Cycle register. Table 14-1 shows the timer resources of the CCP Module modes. The operation of CCP1 is identical to that of CCP2, with the exception of the special event trigger. Therefore, operation of a CCP module in the following sections is described with respect to CCP1. Table 14-2 shows the interaction of the CCP modules. REGISTER 14-1: CCP1CON REGISTER/CCP2CON REGISTER U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 — — DCxB1 DCxB0 CCPxM3 CCPxM2 CCPxM1 CCPxM0 bit 7 bit 0 bit 7-6 Unimplemented: Read as '0' bit 5-4 DCxB1:DCxB0: PWM Duty Cycle bit1 and bit0 Capture mode: Unused Compare mode: Unused PWM mode: These bits are the two LSbs (bit1 and bit0) of the 10-bit PWM duty cycle. The upper eight bits (DCx9:DCx2) of the duty cycle are found in CCPRxL. bit 3-0 CCPxM3:CCPxM0: CCPx Mode Select bits 0000 = Capture/Compare/PWM disabled (resets CCPx module) 0001 = Reserved 0010 = Compare mode, toggle output on match (CCPxIF bit is set) 0011 = Reserved 0100 = Capture mode, every falling edge 0101 = Capture mode, every rising edge 0110 = Capture mode, every 4th rising edge 0111 = Capture mode, every 16th rising edge 1000 = Compare mode, Initialize CCP pin Low, on compare match force CCP pin High (CCPIF bit is set) 1001 = Compare mode, Initialize CCP pin High, on compare match force CCP pin Low (CCPIF bit is set) 1010 = Compare mode, Generate software interrupt on compare match (CCPIF bit is set, CCP pin is unaffected) 1011 = Compare mode, Trigger special event (CCPIF bit is set) 11xx =PWM mode 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 |
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