參數(shù)資料
型號: MC56F8345VFGE
廠商: Freescale Semiconductor
文件頁數(shù): 78/172頁
文件大?。?/td> 0K
描述: IC DSP 16BIT 60MHZ 128-LQFP
標準包裝: 72
系列: 56F8xxx
核心處理器: 56800E
芯體尺寸: 16-位
速度: 60MHz
連通性: CAN,EBI/EMI,SCI,SPI
外圍設備: POR,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 49
程序存儲器容量: 136KB(68K x 16)
程序存儲器類型: 閃存
RAM 容量: 6K x 16
電壓 - 電源 (Vcc/Vdd): 2.25 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 16x12b
振蕩器型: 外部
工作溫度: -40°C ~ 105°C
封裝/外殼: 128-LQFP
包裝: 托盤
配用: MC56F8367EVME-ND - EVAL BOARD FOR MC56F83X
Power Distribution and I/O Ring Implementation
56F8345 Technical Data, Rev. 17
Freescale Semiconductor
169
Preliminary
Because the device’s output signals have fast rise and fall times, PCB trace lengths should be minimal
Consider all device loads as well as parasitic capacitance due to PCB traces when calculating capacitance.
This is especially critical in systems with higher capacitive loads that could create higher transient currents
in the VDD and VSS circuits.
Take special care to minimize noise levels on the VREF, VDDA and VSSA pins
Designs that utilize the TRST pin for JTAG port or OnCE module functionality (such as development or
debugging systems) should allow a means to assert TRST whenever RESET is asserted, as well as a means
to assert TRST independently of RESET. Designs that do not require debugging functionality, such as
consumer products, should tie these pins together.
Because the Flash memory is programmed through the JTAG/OnCE port, the designer should provide an
interface to this port to allow in-circuit Flash programming
12.3 Power Distribution and I/O Ring Implementation
Figure 12-1 illustrates the general power control incorporated in the 56F8345/56F8145. This chip
contains two internal power regulators. One of them is powered from the VDDA_OSC_PLL pin and cannot
be turned off. This regulator controls power to the internal clock generation circuitry. The other regulator
is powered from the VDD_IO pins and provides power to all of the internal digital logic of the core, all
peripherals and the internal memories. This regulator can be turned off, if an external VDD_CORE voltage
is externally applied to the VCAP pins.
In summary, the entire chip can be supplied from a single 3.3 volt supply if the large core regulator is
enabled. If the regulator is not enabled, a dual supply 3.3V/2.5V configuration can also be used.
Notes:
Flash, RAM and internal logic are powered from the core regulator output
VPP1 and VPP2 are not connected in the customer system
All circuitry, analog and digital, shares a common VSS bus
Figure 12-1 Power Management
REG
CORE
VCAP
I/O
ADC
VDD
VSS
REG
VDDA_OSC_PLL
OSC
VSSA_ADC
VDDA_ADC
VREFH
VREFP
VREFMID
VREFN
VREFLO
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相關代理商/技術參數(shù)
參數(shù)描述
MC56F8346 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
MC56F8346EVM 制造商:Freescale Semiconductor 功能描述:Tools Development kit Kit Contents:Inst
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MC56F8346VFV60 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC 60MHz 60MIPS RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設備每秒兆指令數(shù):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