參數資料
型號: MC56F8145VFG
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 數字信號處理
英文描述: 4-BIT, 120 MHz, OTHER DSP, PQFP128
封裝: PLASTIC, LQFP-128
文件頁數: 103/172頁
文件大?。?/td> 871K
代理商: MC56F8145VFG
56F8345 Technical Data, Rev. 17
36
Freescale Semiconductor
Preliminary
Part 3 On-Chip Clock Synthesis (OCCS)
3.1 Introduction
Refer to the OCCS chapter of the 56F8300 Peripheral User Manual for a full description of the OCCS.
The material contained here identifies the specific features of the OCCS design. Figure 3-1 shows the
specific OCCS block diagram to reference in the OCCS chapter of the 56F8300 Peripheral User Manual.
Figure 3-1 OCCS Block Diagram
3.2 External Clock Operation
The system clock can be derived from an external crystal, ceramic resonator, or an external system clock
signal. To generate a reference frequency using the internal oscillator, a reference crystal or ceramic
resonator must be connected between the EXTAL and XTAL pins.
3.2.1
Crystal Oscillator
The internal oscillator is designed to interface with a parallel-resonant crystal resonator in the frequency
range specified for the external crystal in Table 10-15. A recommended crystal oscillator circuit is shown
in Figure 3-2. Follow the crystal supplier’s recommendations when selecting a crystal, since crystal
parameters determine the component values required to provide maximum stability and reliable start-up.
MUX
EXTAL
XTAL
FE
ED
BA
CK
LCK
Prescaler CLK
Postscaler CLK
FOUT/2
Crystal
OSC
Loss of
Reference
Clock
Detector
Lock
Detector
ZSRC
Bus Interface & Control
FOUT
F
REF
PLLDB
PLLCOD
PLLCID
Bus
Interface
Loss of Reference
Clock Interrupt
SYS_CLK2
Source to SIM
MUX
CLKMODE
÷2
Prescaler
÷ (1,2,4,8)
Postscaler
÷ (1,2,4,8)
MS
TR_
O
S
C
PLL
x (1 to 128)
相關PDF資料
PDF描述
MC56F8146VFVE 16-BIT, 120 MHz, OTHER DSP, PQFP144
MC56F8146VFV 16-BIT, 120 MHz, OTHER DSP, PQFP144
MC56F8167VPYE 16-BIT, 120 MHz, OTHER DSP, PQFP160
MC56F8367VVFE 16-BIT, 120 MHz, OTHER DSP, PBGA160
MC56F8367VVF 16-BIT, 120 MHz, OTHER DSP, PBGA160
相關代理商/技術參數
參數描述
MC56F8145VFGE 功能描述:數字信號處理器和控制器 - DSP, DSC 16 BIT HYBRID CONTROLLER RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
MC56F8145VFGER 功能描述:數字信號處理器和控制器 - DSP, DSC 16 BIT HYBRID CONTROLLER RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
MC56F8146 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
MC56F8146VFV 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC56F8146VFVE 功能描述:數字信號處理器和控制器 - DSP, DSC 16 BIT HYBRID CONTROLLER RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT