參數(shù)資料
型號： PIC16CR7X
廠商： Microchip Technology Inc.
英文描述： 28/40-Pin, 8-Bit CMOS ROM Microcontrollers
中文描述： 28/40-Pin，8位微控制器的CMOS光盤
文件頁數(shù)： 55/172頁
文件大小： 1506K
代理商： PIC16CR7X
2007 Microchip Technology Inc.
DS21993C-page 53
PIC16CR7X
8.0
CAPTURE/COMPARE/PWM
MODULES
Each 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
Both the CCP1 and CCP2 modules are identical in
operation, with the exception being the operation of the
special event trigger. Table 8-1 and Table 8-2 show the
resources and interactions of the CCP module(s). In
the following sections, the operation of a CCP module
is described with respect to CCP1. CCP2 operates the
same as CCP1, except where noted.
8.1
CCP1 Module
Capture/Compare/PWM Register1 (CCPR1) is com-
prised of two 8-bit registers: CCPR1L (low byte) and
CCPR1H (high byte). The CCP1CON register controls
the operation of CCP1. The special event trigger is
generated by a compare match and will clear both
TMR1H and TMR1L registers.
8.2
CCP2 Module
Capture/Compare/PWM Register1 (CCPR1) is com-
prised of two 8-bit registers: CCPR1L (low byte) and
CCPR1H (high byte). The CCP2CON register controls
the operation of CCP2. The special event trigger is
generated by a compare match; it will clear both
TMR1H and TMR1L registers, and start an A/D conver-
sion (if the A/D module is enabled).
Additional information on CCP modules is available in
the “
PIC
Mid-Range MCU Family Reference Manual
”
(DS33023) and in Application Note AN594, “
Using the
CCP Modules
” (DS00594).
TABLE 8-1:
CCP MODE – TIMER
RESOURCES REQUIRED
CCP Mode
TABLE 8-2:
CCPx Mode CCPy Mode
INTERACTION OF TWO CCP MODULES
Timer Resource
Capture
Compare
PWM
Timer1
Timer1
Timer2
Interaction
Capture
Capture
Compare
PWM
Capture
Compare
Compare
PWM
Same TMR1 time base.
Same TMR1 time base.
Same TMR1 time base.
The PWMs will have the same frequency and update rate (TMR2 interrupt).
The rising edges are aligned.
None.
None.
PWM
PWM
Capture
Compare
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