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PIC12F683 Datasheet(PDF) 71 Page - Microchip Technology |
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PIC12F683 Datasheet(HTML) 71 Page - Microchip Technology |
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71 / 148 page  2004 Microchip Technology Inc. Preliminary DS41211B-page 69 PIC12F683 11.0 CAPTURE/COMPARE/PWM (CCP) MODULE The Capture/Compare/PWM (CCP) module contains a 16-bit register which can operate as a: • 16-bit Capture register • 16-bit Compare register • PWM Master/Slave Duty Cycle register Capture/Compare/PWM Register 1 (CCPR1) is comprised of two 8-bit registers: CCPR1L (low byte) and CCPR1H (high byte). The CCP1CON register controls the operation of CCP. The special event trigger is generated by a compare match and will clear both TMR1H and TMR1L registers. TABLE 11-1: CCP MODE – TIMER RESOURCES REQUIRED REGISTER 11-1: CCP1CON – CCP CONTROL REGISTER 1 (ADDRESS: 15h) CCP Mode Timer Resource Capture Compare PWM Timer1 Timer1 Timer2 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 — — DC1B1 DC1B0 CCP1M3 CCP1M2 CCP1M1 CCP1M0 bit 7 bit 0 bit 7-6 Unimplemented: Read as ‘0’ bit 5-4 DC1B<1:0>: PWM Least Significant bits Capture mode: Unused. Compare mode: Unused. PWM mode: These bits are the two LSbs of the PWM duty cycle. The eight MSbs are found in CCPR1L. bit 3-0 CCP1M<3:0>: CCP1 Mode Select bits 0000 = Capture/Compare/PWM disabled (resets CCP1 module) 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, set output on match (CCP1IF bit is set) 1001 = Compare mode, clear output on match (CCP1IF bit is set) 1010 = Compare mode, generate software interrupt on match (CCP1IF bit is set, CCP1 pin is unaffected) 1011 = Compare mode, trigger special event (CCP1IF bit is set, CCP1 pin is unaffected); CCP1 resets TMR1 and starts an A/D conversion (if A/D module is enabled) 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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