參數(shù)資料
型號: MCV18ET-I/SO
元件分類: 微控制器/微處理器
英文描述: FLASH, 20 MHz, RISC MICROCONTROLLER, PDSO18
封裝: 7.50 MM, LEAD FREE, SOIC-18
文件頁數(shù): 61/108頁
文件大小: 1509K
代理商: MCV18ET-I/SO
MCV18E
DS41399A-page 56
2009 Microchip Technology Inc.
8.3
PWM Mode
The PWM mode generates a Pulse-Width Modulated
signal on the CCP1 pin. The duty cycle, period and
resolution are determined by the following registers:
PR2
T2CON
CCPR1L
CCP1CON
In Pulse-Width Modulation (PWM) mode, the CCP
module produces up to a 10-bit resolution PWM output
on the CCP1 pin. Since the CCP1 pin is multiplexed
with the PORT data latch, the TRIS for that pin must be
cleared to enable the CCP1 pin output driver.
Figure 8-3 shows a simplified block diagram of PWM
operation.
Figure 8-4 shows a typical waveform of the PWM
signal.
For a step-by-step procedure on how to set up the CCP
module for PWM operation, see Section 8.3.7 “Setup
FIGURE 8-3:
SIMPLIFIED PWM BLOCK
DIAGRAM
The PWM output (Figure 8-4) has a time base
(period) and a time that the output stays high (duty
cycle).
FIGURE 8-4:
CCP PWM OUTPUT
Note:
Clearing
the
CCP1CON
register
will
relinquish CCP1 control of the CCP1 pin.
CCPR1L
CCPR1H(2) (Slave)
Comparator
TMR2
PR2
(1)
RQ
S
Duty Cycle Registers
CCP1CON<5:4>
Clear Timer2,
toggle CCP1 pin and
latch duty cycle
Note
1:
The 8-bit timer TMR2 register is concatenated
with the 2-bit internal system clock (FOSC), or
2 bits of the prescaler, to create the 10-bit time
base.
2:
In PWM mode, CCPR1H is a read-only register.
TRIS
CCP1
Comparator
Period
Pulse Width
TMR2 = 0
TMR2 = CCPR1L:CCP1CON<5:4>
TMR2 = PR2
相關PDF資料
PDF描述
MCV18E-I/P 32-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PDIP18
MD8086-2/B 16-BIT, 8 MHz, MICROPROCESSOR, CDIP40
MD80C154-12/883D 8-BIT, 12 MHz, MICROCONTROLLER, CDIP40
MR83C154TXXX-20/883 8-BIT, MROM, 20 MHz, MICROCONTROLLER, CQCC44
MR83C154XXX-20/883D 8-BIT, MROM, 20 MHz, MICROCONTROLLER, CQCC44
相關代理商/技術參數(shù)
參數(shù)描述
MC-V190H 制造商:Panasonic Industrial Company 功能描述:FILTER KIT
M-CV193H 制造商:Panasonic Industrial Company 功能描述:OD005
MC-V193H 制造商:Panasonic Industrial Company 功能描述:FILTER KIT
MCV19ES 制造商:Mencom 功能描述:
MCV-19FP-FW 制造商:Mencom 功能描述: