參數(shù)資料
型號(hào): DSP56301PW80
廠商: Freescale Semiconductor
文件頁數(shù): 8/124頁
文件大?。?/td> 0K
描述: IC DSP 24BIT 80MHZ 208-LQFP
標(biāo)準(zhǔn)包裝: 36
系列: DSP563xx
類型: 定點(diǎn)
接口: 主機(jī)接口,SSI,SCI
時(shí)鐘速率: 80MHz
非易失內(nèi)存: ROM(9 kB)
芯片上RAM: 24kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 3.30V
工作溫度: -40°C ~ 100°C
安裝類型: 表面貼裝
封裝/外殼: 208-LQFP
供應(yīng)商設(shè)備封裝: 208-LQFP
包裝: 托盤
Power Consumption Considerations
DSP56301 Technical Data, Rev. 10
Freescale Semiconductor
4-3
If multiple DSP devices are on the same board, check for cross-talk or excessive spikes on the supplies due
to synchronous operation of the devices.
RESET
must be asserted when the chip is powered up. A stable EXTAL signal should be supplied before
deassertion of RESET.
At power-up, ensure that the voltage difference between the 5 V tolerant pins and the chip VCC never
exceeds 3.5 V.
4.3 Power Consumption Considerations
Power dissipation is a key issue in portable DSP applications. Some of the factors affecting current consumption
are described in this section. Most of the current consumed by CMOS devices is alternating current (ac), which is
charging and discharging the capacitances of the pins and internal nodes.
Current consumption is described by this formula:
Equation 3:
Where:
C
=
node/pin capacitance
V
=
voltage swing
f
=
frequency of node/pin toggle
Equation 4:
The maximum internal current (ICCImax) value reflects the typical possible switching of the internal buses on best-
case operation conditions—not necessarily a real application case. The typical internal current (ICCItyp) value
reflects the average switching of the internal buses on typical operating conditions. Perform the following steps for
applications that require very low current consumption:
1.
Set the EBD bit when you are not accessing external memory.
2.
Minimize external memory accesses, and use internal memory accesses.
3.
Minimize the number of pins that are switching.
4.
Minimize the capacitive load on the pins.
5.
Connect the unused inputs to pull-up or pull-down resistors.
6.
Disable unused peripherals.
7.
Disable unused pin activity (for example, CLKOUT, XTAL).
One way to evaluate power consumption is to use a current-per-MIPS measurement methodology to minimize
specific board effects (that is, to compensate for measured board current not caused by the DSP). A benchmark
power consumption test algorithm is listed in Appendix A. Use the test algorithm, specific test current
measurements, and the following equation to derive the current-per-MIPS value.
Example 1. Current Consumption
For a Port A address pin loaded with 50 pF capacitance, operating at 3.3 V, with a 66 MHz clock, toggling at its maximum possible rate (33
MHz), the current consumption is expressed in Equation 4.
IC
V
f
×
=
I
50
10
12
×
3.3
×
33
×
10
6
×
5.48 mA
==
相關(guān)PDF資料
PDF描述
VE-26Z-CW-S CONVERTER MOD DC/DC 2V 40W
MIC281-0BM6 TR IC SUPERVISOR THERMAL SOT23-6
VJ1206A821JBBAT4X CAP CER 820PF 100V 5% NP0 1206
VI-21D-CW-F4 CONVERTER MOD DC/DC 85V 100W
EBC05DRES-S13 CONN EDGECARD 10POS .100 EXTEND
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DSP56301UMAD 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DSP56301 Users Manual Addendum
DSP56301VF100 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC 100Mhz/100MMACS RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)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(fēng)格:SMD/SMT
DSP56301VF80 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC MAP DSP RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)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(fēng)格:SMD/SMT
DSP56301VF80B1 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC DSP56301VF80B1 RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)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(fēng)格:SMD/SMT
DSP56301VL100 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:24-Bit Digital Signal Processor