參數資料
型號： MC56F8157
廠商： Electronic Theatre Controls, Inc.
英文描述： 16-BIT HYBRID CONTROLLERS
中文描述： 16位混合控制器
文件頁數： 39/172頁
文件大?。?/td> 2444K
代理商： MC56F8157
External Clock Operation
56F8357 Technical Data, Rev. 8.0
Freescale Semiconductor
Preliminary
39
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 3-2 Connecting to a Crystal Oscillator
Note:
The OCCS_COHL bit must 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
.
3.2.2
It is also possible to drive the internal oscillator with a ceramic resonator, assuming the overall system
design can tolerate the reduced signal integrity. A typical ceramic resonator circuit is shown in
Figure 3-3
.
Refer to the supplier’s recommendations when selecting a ceramic resonator and associated components.
The resonator and components should be mounted as near as possible to the EXTAL and XTAL pins.
Ceramic Resonator (Default)
Figure 3-3 Connecting a Ceramic Resonator
Note:
The OCCS_COHL bit must be set to 0 when a ceramic resonator 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:
R
z
= 750 K
Note: If the operating temperature range is limited to
below 85
o
C
(105
o
C junction), then R
z
= 10 Meg
CLKMODE = 0
EXTAL XTAL
R
z
CL1
CL2
Crystal Frequency = 4 - 8MHz (optimized for 8MHz)
EXTAL XTAL
R
z
EXTAL XTAL
R
z
Sample External Ceramic Resonator Parameters:
R
z
= 750 K
EXTAL XTAL
R
z
C1
CL1
CL2
C2
Resonator Frequency = 4 - 8MHz (optimized for 8MHz)
3 Terminal
2 Terminal
CLKMODE = 0
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相關代理商/技術參數
參數描述
MC56F8157VPY 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC56F8157VPYE 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
MC56F8157VVFE 功能描述:IC DGTL SIGNAL CTLR 160-MAPBGA RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:56F8xxx 標準包裝:1 系列:87C 核心處理器:MCS 51 芯體尺寸:8-位 速度:16MHz 連通性:SIO 外圍設備:- 輸入/輸出數:32 程序存儲器容量:8KB（8K x 8） 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4 V ~ 6 V 數據轉換器:- 振蕩器型:外部 工作溫度:0°C ~ 70°C 封裝/外殼:44-DIP 包裝:管件 其它名稱:864285
MC56F8165 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
MC56F8165E 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
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