参数资料
型号: MC56F8122VFAE
厂商: Freescale Semiconductor
文件页数: 58/136页
文件大小: 0K
描述: IC DSP 16BIT 40MHZ 48-LQFP
标准包装: 250
系列: 56F8xxx
核心处理器: 56800E
芯体尺寸: 16-位
速度: 40MHz
连通性: SCI,SPI
外围设备: POR,WDT
输入/输出数: 21
程序存储器容量: 32KB(16K x 16)
程序存储器类型: 闪存
RAM 容量: 4K x 16
电压 - 电源 (Vcc/Vdd): 2.25 V ~ 3.6 V
数据转换器: A/D 6x12b
振荡器型: 内部
工作温度: -40°C ~ 105°C
封装/外壳: 48-LQFP
包装: 托盘
产品目录页面: 734 (CN2011-ZH PDF)
56F8322 Techncial Data, Rev. 16
28
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.
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 3-1. 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.
The crystal and associated components should be mounted as near as possible to the EXTAL and XTAL
pins to minimize output distortion and start-up stabilization time.
Figure 3-1 Connecting to a Crystal Oscillator
Note:
The OCCS_COHL bit should be set to 1 when a crystal oscillator is used. The reset condition on the
OCCS_COHL bit is 0. Please see the COHL bit in the Oscillator Control (OSCTL) register, discussed
in the 56F8300 Peripheral User Manual.
Sample External Crystal Parameters:
Rz = 750 KΩ
Note: If the operating temperature range is limited to
below 85oC (105oC junction), then Rz = 10 Meg Ω
CLKMODE = 0
EXTAL XTAL
Rz
CL1
CL2
Crystal Frequency = 4 - 8MHz (optimized for 8MHz)
EXTAL XTAL
Rz
相关PDF资料
PDF描述
VE-B5J-IX-B1 CONVERTER MOD DC/DC 36V 75W
MC908QC16VDRE IC MCU 8BIT 16K FLASH 28-TSSOP
TVP5150APBS IC NTSC/PAL/SECAM DECODER 32TQFP
MCF51JE256VMB IC MCU 256K COLDF 81-PBGA
VE-B5J-IW-B1 CONVERTER MOD DC/DC 36V 100W
相关代理商/技术参数
参数描述
MC56F8123 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:16-bit Hybrid Controllers
MC56F8123VFB 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:16-bit Hybrid Controllers
MC56F8123VFBE 功能描述:数字信号处理器和控制器 - DSP, DSC 16 BIT HYBRID CONTROLLER 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
MC56F8135 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controller
MC56F8135E 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controller