DV164136 Microchip Technology, DV164136 Datasheet - Page 189

• Manufacturer Part Number: DV164136
• Description: DEVELOPMENT KIT FOR PIC18
• Manufacturer: Microchip Technology
• Series: PIC®r
• Type: MCUr

Specifications of DV164136

• Contents: Board, Cables, CDs, PICkit™ 3 Programmer, Power Supply
• Processor To Be Evaluated: PIC18F8722, PIC18F87J11
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3.3 V, 5 V
• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC18
• Silicon Core Number: PIC18F
• Silicon Family Name: PIC18F8xxx
• Kit Contents: PIC18 Exp Brd PICkit 3 Cable CD PSU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: PIC18F8722, PIC18F87J11
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

18.0
In the PIC18F8722 family of devices, ECCP1, ECCP2
and ECCP3 are implemented as a standard CCP
module with Enhanced PWM capabilities. These
include the provision for 2 or 4 output channels, user
selectable polarity, dead-band control and automatic
shutdown and restart. The enhanced features are
discussed in detail in Section 18.4 “Enhanced PWM
Mode”. Capture, Compare and single-output PWM
functions of the ECCP module are the same as
described for the standard CCP module.
REGISTER 18-1:
© 2008 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-6
bit 5-4
bit 3-0
R/W-0
PxM1
ENHANCED CAPTURE/
COMPARE/PWM (ECCP)
MODULE
PxM1:PxM0: Enhanced PWM Output Configuration bits
If CCPxM<3:2> = 00, 01, 10:
xx = PxA assigned as Capture/Compare input/output; PxB, PxC, PxD assigned as port pins
If CCPxM<3:2> = 11:
00 = Single output: PxA modulated; PxB, PxC, PxD assigned as port pins
01 = Full-bridge output forward: P1D modulated; P1A active; P1B, P1C inactive
10 = Half-bridge output: P1A, P1B modulated with dead-band control; P1C, P1D assigned as port pins
11 = Full-bridge output reverse: P1B modulated; P1C active; P1A, P1D inactive
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 CCPRxL.
CCPxM3:CCPxM0: Enhanced CCP 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 4th rising edge
0111 = Capture mode: every 16th 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 (ECCP resets TMR1 or TMR3, sets CCPxIF bit; ECCP2
1100 = PWM mode: PxA, PxC active-high; PxB, PxD active-high
1101 = PWM mode: PxA, PxC active-high; PxB, PxD active-low
1110 = PWM mode: PxA, PxC active-low; PxB, PxD active-high
1111 = PWM mode: PxA, PxC active-low; PxB, PxD active-low
R/W-0
PxM0
CCPxCON: ENHANCED CCPx CONTROL REGISTER (ECCP1, ECCP2, ECCP3)
trigger starts A/D conversion if A/D module is enabled)
W = Writable bit
‘1’ = Bit is set
DCxB1
R/W-0
DCxB0
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
CCPxM3
R/W-0
The control register for the Enhanced CCP modules is
shown in Register 18-1. It differs from the CCPxCON
registers
Compare/PWM (CCP) Modules” in that the two Most
Significant bits are implemented to control PWM
functionality. In addition to the expanded range of
modes available through the Enhanced CCPxCON
register, the ECCP modules each have two additional
features associated with Enhanced PWM operation
and auto-shutdown features. They are:
• ECCPxDEL (Dead-Band Delay)
• ECCPxAS (Auto-Shutdown Configuration)
PIC18F8722 FAMILY
discussed
CCPxM2
R/W-0
in
x = Bit is unknown
CCPxM1
Section 17.0
R/W-0
DS39646C-page 187
CCPxM0
R/W-0
“Capture/
bit 0