参数资料
型号: MC56F8011VFAE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 数字信号处理
英文描述: 0-BIT, 8 MHz, OTHER DSP, PQFP32
封装: ROHS COMPLIANT, LQFP-32
文件页数: 45/125页
文件大小: 1702K
代理商: MC56F8011VFAE
56F8013/56F8011 Data Sheet, Rev. 11
26
Freescale Semiconductor
Part 3 OCCS
3.1 Overview
This module provides the system clock frequency, which is used to generate the various chip clocks. This
module also produces the clock signals plus the ADC clock and high-speed peripheral clock.
The on-chip clock synthesis module allows product design using an internal relaxation oscillator to run
56F801X family parts at user-selectable frequencies up to 32MHz.
3.2 Features
The On-Chip Clock Synthesis (OCCS) module interfaces to the oscillator and PLL. The OCCS module
features:
Internal relaxation oscillator
Ability to power down the internal relaxation oscillator
Ability to put the internal relaxation oscillator into a standby mode
3-bit postscaler provides control for the PLL output
Ability to power down the internal PLL
Provides 2X system clock, which operates at twice the system clock, to the System Integration Model (SIM)
that is used to generate the various device clocks
Provides 3X system clock, which operates at three times the system clock, to PWM and Timer
Safety shutdown feature is available in the event that the PLL reference clock is lost
Can be driven from an external clock source
The clock generation module provides the programming interface for both the PLL and internal relaxation
oscillator.
3.3 Operating Modes
In 56F801X family parts, either an internal oscillator or an external frequency source can be used to
provide a reference clock to the SIM.
The 2X system clock source output from the OCCS can be described by one of the following equations:
2X system frequency = oscillator frequency
2X system frequency = (oscillator frequency X 8) / (postscaler)
where:
postscaler = 1, 2, 4, 8, 16, or 32 PLL output divider
The SIM is responsible for further dividing these frequencies by two, which will insure a 50% duty cycle
in the system clock output.
相关PDF资料
PDF描述
S568013MFA00E 0-BIT, 8 MHz, OTHER DSP, PQFP32
MC56F8023VLC 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP32
MC56F8033VLC 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP32
MC56F8347MPY60 16-BIT, 120 MHz, OTHER DSP, PQFP160
MC56F8355VFG60 4-BIT, 120 MHz, OTHER DSP, PQFP128
相关代理商/技术参数
参数描述
MC56F8013 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
MC56F8013E 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
MC56F8013MFAE 功能描述:数字信号处理器和控制器 - DSP, DSC 16Bit DSPHC ANGUILLA RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT
MC56F8013MFAER2 制造商:Freescale Semiconductor 功能描述:16 BIT DSPHC ANGUILLA - Tape and Reel
MC56F8013PB 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers