PIC18F87K22 Datasheet, PDF(247/548 Page) Microchip Technology – 64/80-Pin, High-Performance, 1-Mbit Enhanced Flash Microcontrollers with 12-Bit A/D and nanoWatt XLP Technology

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PIC18F87K22 Datasheet, PDF (247/548 Pages) Microchip Technology – 64/80-Pin, High-Performance, 1-Mbit Enhanced Flash Microcontrollers with 12-Bit A/D and nanoWatt XLP Technology

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PIC18F87K22 FAMILY

19.1 CCP Module Configuration

Each Capture/Compare/PWM module is associated

with a control register (generically, CCPxCON) and a

data register (CCPRx). The data register, in turn, is

comprised of two 8-bit registers: CCPRxL (low byte)

and CCPRxH (high byte). All registers are both

readable and writable.

19.1.1

CCP MODULES AND TIMER

RESOURCES

The CCP modules utilize Timers, 1 through 8, that vary

with the selected mode. Various timers are available to

the CCP modules in Capture, Compare or PWM

modes, as shown in Table 19-1.

TABLE 19-1: CCP MODE â TIMER

RESOURCE

CCP Mode

Timer Resource

Capture

Compare

Timer1, Timer3, Timer 5 or Timer7

PWM

Timer2, Timer4, Timer 6 or Timer8

The assignment of a particular timer to a module is

determined by the Timer to CCP enable bits in the

CCPTMRSx registers. (See Register 19-2 and

Register 19-3.) All of the modules may be active at

once and may share the same timer resource if they

are configured to operate in the same mode

(Capture/Compare or PWM) at the same time.

The CCPTMRS1 register selects the timers for CCP

modules, 7, 6, 5 and 4, and the CCPTMRS2 register

selects the timers for CCP modules, 10, 9 and 8. The

possible configurations are shown in Table 19-2 and

Table 19-3.

TABLE 19-2: TIMER ASSIGNMENTS FOR CCP MODULES 4, 5, 6 AND 7

CCPTMRS1 Register

CCP4

CCP5

CCP6

CCP7

C4TSEL

<1:0>

Capture/

Compare

Mode

PWM

Mode

Capture/

C5TSEL0 Compare

Mode

PWM

Mode

C6TSEL0

Capture/

Compare

Mode

PWM

Mode

C7TSEL

<1:0>

Capture/

Compare

Mode

PWM

Mode

0 0 TMR1 TMR2

0

TMR1 TMR2

0

0 1 TMR3 TMR4

1

TMR5 TMR4

1

1 0 TMR3 TMR6

11

Reserved(1)

Note 1: Do not use the reserved bits.

TMR1 TMR2 0 0

TMR5 TMR2 0 1

10

11

TMR1

TMR5

TMR5

TMR5

TMR2

TMR4

TMR6

TMR8

TABLE 19-3: TIMER ASSIGNMENTS FOR CCP MODULES 8, 9 AND 10

CCPTMRS2 Register

CCP8

CCP8

Devices with 32 Kbytes

CCP9(1)

CCP10(1)

C8TSEL

<1:0>

Capture/

Compare

Mode

PWM

Mode

C8TSEL

<1:0>

Capture/

Compare

Mode

PWM

Mode

Capture/

C9TSEL0 Compare

Mode

PWM

Mode

Capture/

C10TSEL0 Compare

Mode

PWM

Mode

00

01

10

11

Note 1:

2:

TMR1 TMR2 0 0 TMR1 TMR2

0

TMR1 TMR2

0

TMR1 TMR2

TMR7 TMR4 0 1 TMR1 TMR4

1

TMR7 TMR4

1

TMR7 TMR2

TMR7 TMR6 1 0

Reserved(2)

11

TMR1 TMR6

Reserved(2)

Module not available for devices with 32 Kbytes of program memory (PIC18F65K22 and PIC18F85K22).

Do not use the reserved bits.

ï£ 2010 Microchip Technology Inc.

Preliminary

DS39960B-page 247

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