- 您現(xiàn)在的位置：買賣IC網 > PDF目錄19466 > ADSP-21065LKSZ-240 (Analog Devices Inc)IC DSP CONTROLLR 544KBIT 208MQFP PDF資料下載
參數(shù)資料
| 型號： | ADSP-21065LKSZ-240 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 32/44頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DSP CONTROLLR 544KBIT 208MQFP |
| 產品培訓模塊： | SHARC Processor Overview |
| 標準包裝： | 1 |
| 系列： | SHARC® |
| 類型： | 浮點 |
| 接口： | 主機接口，串行端口 |
| 時鐘速率： | 60MHz |
| 非易失內存： | 外部 |
| 芯片上RAM： | 64kB |
| 電壓 - 輸入/輸出： | 3.30V |
| 電壓 - 核心： | 3.30V |
| 工作溫度： | 0°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 208-BFQFP |
| 供應商設備封裝： | 208-MQFP（28x28） |
| 包裝： | 托盤 |
| 其它名稱： | ADSP-21065LKSZ240 ADSP-21065LKSZ240-ND |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁當前第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
REV. C
ADSP-21065L
–38–
POWER DISSIPATION
Total power dissipation has two components: one due to inter-
nal circuitry and one due to the switching of external output
drivers. Internal power dissipation depends on the sequence in
which instructions execute and the data operands involved. See
IDDIN calculation in Electrical Characteristics section. Internal
power dissipation is calculated this way:
PINT = IDDIN
VDD
The external component of total power dissipation is caused by
the switching of output pins. Its magnitude depends on:
– the number of output pins that switch during each cycle (O)
– the maximum frequency at which the pins can switch (f)
– the load capacitance of the pins (C)
– the voltage swing of the pins (VDD).
The external component is calculated using:
PEXT = O
C VDD2 f
The load capacitance should include the processor’s package
capacitance (CIN). The frequency f includes driving the load
high and then back low. Address and data pins can drive high
and low at a maximum rate of 1/tCK while in SDRAM burst
mode.
Example:
Estimate PEXT with the following assumptions:
–a system with one bank of external memory (32-bit)
–two 1M
16 SDRAM chips, each with a control signal load
of 3 pF and a data signal load of 4 pF
– external data writes occur in burst mode, two every 1/tCK
cycles, a potential frequency of 1/tCK cycles/s. Assume 50%
pin switching
– the external SDRAM clock rate is 60 MHz (2/tCK).
The PEXT equation is calculated for each class of pins that can
drive:
Table V. External Power Calculations
Pin
# of
%
Type
Pins Switching
C
f
VDD
2
= PEXT
Address
11
50
10.7 30 MHz 10.9 V = 0.019 W
MS
0
10
10.7 —
10.9 V = 0.000 W
SDWE
10
10.7 —
10.9 V = 0.000 W
Data
32
50
7.7
30 MHz 10.9 V = 0.042 W
SDRAM CLK 1
–
10.7 30 MHz 10.9 V = 0.007 W
PEXT = 0.068 W
A typical power consumption can now be calculated for these
conditions by adding a typical internal power dissipation. (IDDIN
see calculation in Electrical Characteristics section):
PTOTAL = PEXT + (IDDIN
VDD)
Note that the conditions causing a worst-case PEXT differ from
those causing a worst-case PINT. Maximum PINT cannot occur
while 100% of the output pins are switching from all ones (1s)
to all zeros (0s). Note also that it is not common for an appli-
cation to have 100% or even 50% of the outputs switching
simultaneously.
ENVIRONMENTAL CONDITIONS
Thermal Characteristics
The ADSP-21065L is offered in a 208-lead MQFP and a 196-
ball Mini-BGA package.
The ADSP-21065L is specified for a case temperature (TCASE).
To ensure that TCASE is not exceeded, an air flow source may be
used.
TCASE = TAMB + (PD
qCA)
TCASE =Case temperature (measured on top surface of package)
PD =
Power Dissipation in W (this value depends upon the
specific application; a method for calculating PD is
shown under Power Dissipation)
qJC = 7.1∞C/W for 208-lead MQFP
qJC = 5.1∞C/W for 196-ball Mini-BGA
Airflow
Table VI. Thermal Characteristics (208-Lead MQFP)
(Linear Ft./Min.)
0
100
200
400
600
qCA (∞C/W)
24
20
19
17
13
Table VII. 196-Ball Mini-BGA
(Linear Ft./Min.)
0
200
400
qCA (∞C/W)
38
29
23
相關PDF資料 |
PDF描述 |
|---|---|
| GEC07DRTI | CONN EDGECARD 14POS DIP .100 SLD |
| TAP106M035DCS | CAP TANT 10UF 35V 20% RADIAL |
| HMM36DRTF | CONN EDGECARD 72POS DIP .156 SLD |
| VI-B12-CW-B1 | CONVERTER MOD DC/DC 15V 100W |
| VE-21K-CY-F3 | CONVERTER MOD DC/DC 40V 50W |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADSP-21065LKSZ-264 | 功能描述:IC DSP CONTROLL 544KBIT 208-MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - DSP（數(shù)字式信號處理器） 系列:SHARC® 標準包裝:40 系列:TMS320DM64x, DaVinci™ 類型:定點 接口:I²C，McASP，McBSP 時鐘速率:400MHz 非易失內存:外部 芯片上RAM:160kB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:0°C ~ 90°C 安裝類型:表面貼裝 封裝/外殼:548-BBGA，F(xiàn)CBGA 供應商設備封裝:548-FCBGA（27x27） 包裝:托盤 配用:TMDSDMK642-0E-ND - DEVELPER KIT W/NTSC CAMERA296-23038-ND - DSP STARTER KIT FOR TMS320C6416296-23059-ND - FLASHBURN PORTING KIT296-23058-ND - EVAL MODULE FOR DM642TMDSDMK642-ND - DEVELOPER KIT W/NTSC CAMERA |
| ADSP-2106X | 制造商:AD 制造商全稱:Analog Devices 功能描述:DSP Microcomputer Family |
| ADSP-2109 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost DSP Microcomputers |
| ADSP-2109KP-80 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost DSP Microcomputers |
| ADSP-2109LKP-55 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost DSP Microcomputers |
發(fā)布緊急采購，3分鐘左右您將得到回復。