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| 型號： | XC56L307VF160 |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 85/104頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DSP 24BIT FIXED POINT 196-BGA |
| 標(biāo)準(zhǔn)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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Power Consumption Considerations
DSP56L307 Technical Data, Rev. 6
Freescale Semiconductor
4-3
All inputs must be terminated (that is, not allowed to float) by CMOS levels except for the three pins with
internal pull-up resistors (TRST, TMS, DE).
Take special care to minimize noise levels on the VCCP, GNDP, and GNDP1 pins.
The following pins must be asserted during power-up: RESET and TRST. A stable EXTAL signal should be
supplied before deassertion of RESET. If the VCC reaches the required level before EXTAL is stable or
other “required RESET duration” conditions are met (see Table 2-7), the device circuitry can be in an
uninitialized state that may result in significant power consumption and heat-up. Designs should minimize
this condition to the shortest possible duration.
Ensure that during power-up, and throughout the DSP56L307 operation, VCCQH is always higher or equal
to the VCC voltage level.
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.
The Port A data bus (D[0–23]), HI08, ESSI0, ESSI1, SCI, and timers all use internal keepers to maintain the
last output value even when the internal signal is tri-stated. Typically, no pull-up or pull-down resistors
should be used with these signal lines. However, if the DSP is connected to a device that requires pull-up
resistors (such as an MPC8260), the recommended resistor value is 10 K
or less. If more than one DSP
must be connected in parallel to the other device, the pull-up resistor value requirement changes as
follows:
—2 DSPs = 7 K
or less
—3 DSPs = 4 K
or less
—4 DSPs = 3 K
or less
—5 DSPs = 2 K
or less
—6 DSPs = 1.5 K
or less
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:
Example 4-1. 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.
I
CV
f
×
=
I
50
10
12
–
×
3.3
×
33
×
10
6
×
5.48 mA
==
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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(biāo)準(zhǔn)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 |
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