Datasheet 搜索 > 微控制器 > Microchip（微芯） > PIC16F723A-E/SO 数据手册 > PIC16F723A-E/SO 其他数据使用手册 6/8 页
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PIC16F723A-E/SO 其他数据使用手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
微控制器
封装:
SOIC-28
描述:
28引脚闪存单片机采用nanoWatt XLP技术 28-Pin Flash Microcontrollers with nanoWatt XLP Technology
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
功能描述在P3P4P5P6P7
应用领域在P3P4P5P6P7
导航目录
PIC16F723A-E/SO数据手册
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若手册格式错乱，请下载阅览PDF原文件
6
Core Independent Peripherals for 8-bit PIC Microcontrollers
8-bit Peripheral Highlights
High Resolution PWM (HRPWM)
Full Range PWM Resolution at High Frequency
Key Features
■ Enables high switching frequency designs
■ Variable PWM resolution
■ Up to 17 bits effective resolutions at 500 kHz
Benefits
■ Reduced sizing of inductors and capacitors
■ Reduced BOM cost and improved EMI
■ Precision LED color mixing, smooth diming and
brightness control
■ Higher efficiency power conversion designs
Example Applications
■ Power supplies
■ DC/DC converters
■ LED lighting/color mixing
■ Motor control
■ Flourescent ballast
■ Resonant power supply
HRPWM
Conventional PWM vs. HRPWM
Conventional PWM HRPWM
PWM Resolution 16b Variable
PWM Clock Frequency 16 MHz 16 MHz
Target Switching Frequency 500 kHz 500 kHz
Target Period Width 1 ÷ 500 kHz = 2 μs 1 ÷ 500 kHz = 2 μs
Best PWM Pulse Adjustment 1 ÷ 16 MHz = 62.5 ns 15.26 ps*
Maximum Number of Steps per Period 2 μs ÷ 62.5 ns = 32 2 μs ÷ 15.26 ps = 131,072
Effective Full Range PWM Resolution log232 = 5 bits log2131,072 = 17 bits
*Reference application note AN1476 for calculation
NCOCLC
System Cloc
k
PWM
Comparator
External Pin
Input Sources
HRPWM Output
17-bit PWM
Max # Steps = 2
17
= 131,072
Clock Period
Variable PWM
Duty Cycle
0Max Steps
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