Datasheet
PIC18F47J13 FAMILY
DS39974A-page 270 Preliminary 2010 Microchip Technology Inc.
REGISTER 19-1: CCPxCON: ECCP1/2/3 CONTROL (1, ACCESS FBAh; 2, FB4h; 3, BANKED F15h)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
PxM1 PxM0 DCxB1 DCxB0 CCPxM3 CCPxM2 CCPxM1 CCPxM0
bit 7 bit 0
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
bit 7-6 PxM<1:0>: Enhanced PWM Output Configuration bits
If CCPxM<3:2> =
00, 01, 10:
xx = PxA assigned as capture/compare input/output; PxB, PxC and PxD assigned as port pins
If CCPxM<3:2> = 11:
00 = Single output: PxA, PxB, PxC and PxD are controlled by steering (see Section 19.4.7 “Pulse
Steering Mode”)
01 = Full-bridge output forward: PxD modulated; PxA active; PxB, PxC inactive
10 = Half-bridge output: PxA, PxB modulated with dead-band control; PxC and PxD assigned as
port pins
11 = Full-bridge output reverse: PxB modulated; PxC active; PxA and PxD inactive
bit 5-4 DCxB<1:0>: PWM Duty Cycle Bit 1 and Bit 0
Capture mode:
Unused.
Compare mode:
Unused.
PWM mode:
These bits are the two LSbs of the 10-bit PWM duty cycle. The eight MSbs of the duty cycle are found
in ECCPRxL.
bit 3-0 CCPxM<3:0>: ECCPx Mode Select bits
0000 = Capture/Compare/PWM off (resets ECCPx module)
0001 = Reserved
0010 = Compare mode; toggle output on match
0011 = Capture mode
0100 = Capture mode; every falling edge
0101 = Capture mode; every rising edge
0110 = Capture mode; every fourth rising edge
0111 = Capture mode; every 16
th
rising edge
1000 = Compare mode; initialize ECCPx pin low, set output on compare match (set CCPxIF)
1001 = Compare mode; initialize ECCPx pin high, clear output on compare match (set CCPxIF)
1010 = Compare mode; generate software interrupt only, ECCPx pin reverts to I/O state
1011 = Compare mode; trigger special event (ECCPx resets TMR1 or TMR3, starts A/D conversion,
sets CCPxIF bit)
1100 = PWM mode; PxA and PxC active-high; PxB and PxD active-high
1101 = PWM mode; PxA and PxC active-high; PxB and PxD active-low
1110 = PWM mode; PxA and PxC active-low; PxB and PxD active-high
1111 = PWM mode; PxA and PxC active-low; PxB and PxD active-low