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| 型號： | XC56L307VF160 |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 84/104頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DSP 24BIT FIXED POINT 196-BGA |
| 標準包裝： | 126 |
| 系列： | DSP563xx |
| 類型： | 定點 |
| 接口： | 主機接口，SSI，SCI |
| 時鐘速率： | 160MHz |
| 非易失內(nèi)存： | ROM（576 B） |
| 芯片上RAM： | 576kB |
| 電壓 - 輸入/輸出： | 3.30V |
| 電壓 - 核心： | 1.80V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 196-LBGA |
| 供應(yīng)商設(shè)備封裝： | 196-MAPBGA（15x15） |
| 包裝： | 托盤 |
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DSP56L307 Technical Data, Rev. 6
4-2
Freescale Semiconductor
Design Considerations
If the temperature of the package case (TT) is determined by a thermocouple, thermal resistance is
computed from the value obtained by the equation (TJ – TT)/PD.
As noted earlier, the junction-to-case thermal resistances quoted in this data sheet are determined using the first
definition. From a practical standpoint, that value is also suitable to determine the junction temperature from a case
thermocouple reading in forced convection environments. In natural convection, the use of the junction-to-case
thermal resistance to estimate junction temperature from a thermocouple reading on the case of the package will
yield an estimate of a junction temperature slightly higher than actual temperature. Hence, the new thermal metric,
thermal characterization parameter or
ΨJT, has been defined to be (TJ – TT)/PD. This value gives a better estimate
of the junction temperature in natural convection when the surface temperature of the package is used. Remember
that surface temperature readings of packages are subject to significant errors caused by inadequate attachment of
the sensor to the surface and to errors caused by heat loss to the sensor. The recommended technique is to attach a
40-gauge thermocouple wire and bead to the top center of the package with thermally conductive epoxy.
4.2 Electrical Design Considerations
Use the following list of recommendations to ensure correct DSP operation.
Provide a low-impedance path from the board power supply to each VCC pin on the DSP and from the
board ground to each GND pin.
Use at least six 0.01–0.1
F bypass capacitors positioned as close as possible to the four sides of the
package to connect the VCC power source to GND.
Ensure that capacitor leads and associated printed circuit traces that connect to the chip VCC and GND pins
are less than 0.5 inch per capacitor lead.
Use at least a four-layer PCB with two inner layers for VCC and GND.
Because the DSP output signals have fast rise and fall times, PCB trace lengths should be minimal. This
recommendation particularly applies to the address and data buses as well as the IRQA, IRQB, IRQC, IRQD,
TA
, and BG pins. Maximum PCB trace lengths on the order of 6 inches are recommended.
Consider all device loads as well as parasitic capacitance due to PCB traces when you calculate
capacitance. This is especially critical in systems with higher capacitive loads that could create higher
transient currents in the VCC and GND circuits.
CAUTION
This device contains protective circuitry to
guard against damage due to high static
voltage or electrical fields. However, normal
precautions are advised to avoid application
of any voltages higher than maximum rated
voltages
to
this
high-impedance
circuit.
Reliability of operation is enhanced if unused
inputs are tied to an appropriate logic voltage
level (for example, either GND or VCC).
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| XC56L307VL150 | 功能描述:IC DSP 24BIT 150MHZ 196-MABGA RoHS:是 類別:集成電路 (IC) >> 嵌入式 - DSP（數(shù)字式信號處理器） 系列:DSP563xx 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(nèi)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(yīng)商設(shè)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 |
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| XC5A0122 | 制造商:Omron Electronic Components LLC 功能描述:CONN DIN 41612 PL 100 POS 2.54MM SLDR RA TH - Bulk 制造商:Omron Electronic Components LLC 功能描述:CONNECTR 100POS RT-ANGL TERM DIN 制造商:Omron Electronic Components LLC 功能描述:Conn DIN 41612 PL 100 POS 2.54mm Solder RA Thru-Hole |
| XC5A-0122 | 功能描述:DIN 41612 連接器 CONNECTOR RoHS:否 制造商:HARTING 系列:har-bus 64 產(chǎn)品類型:Plugs 排數(shù):5 位置/觸點數(shù)量:160 安裝角:Right 類型:Shrouded Header 端接類型:Solder 外殼材料: 觸點材料: 觸點電鍍: |
| XC5A-0122BYOMR | 制造商:Omron Corporation 功能描述:CONN DIN 41612 PL 100 POS 2.54MM SLDR RA TH - Bulk |
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