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參數(shù)資料
| 型號： | MPC5200CVR400B |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 400 MHz, MICROPROCESSOR, PBGA272 |
| 封裝： | 27 X 27 MM, 1.27 MM PITCH, ROHS COMPLIANT, PLASTIC, BGA-272 |
| 文件頁數(shù)： | 68/78頁 |
| 文件大?。?/td> | 1100K |
| 代理商： | MPC5200CVR400B |
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MPC5200B Data Sheet, Rev. 1
System Design Information
Freescale Semiconductor
70
5.1.2
Power Down Sequence
If VDD_CORE/PLL_AVDD are powered down first, then sense circuits in the I/O pads will cause all
output drivers to be in a high impedance state. There is no limit on how long after VDD_CORE and
PLL_AVDD power down before VDD_IO or VDD_IO_MEM must power down. VDD_CORE should not
lag VDD_IO, VDD_IO_MEM, or PLL_AVDD going low by more than 0.5V during power down or there
will be undesired high current in the ESD protection diodes. There are no requirements for the fall times
of the power supplies.
The recommended power down sequence is as follows:
Drop VDD_CORE/PLL_AVDD to 0V.
Drop VDD_IO/VDD_IO_MEM supplies.
5.2
System and CPU Core AVDD Power Supply Filtering
Each of the independent PLL power supplies require filtering external to the device. The following
drawing is a recommendation for the required filter circuit.
Figure 52. Power Supply Filtering
5.3
Pull-up/Pull-down Resistor Requirements
The MPC5200B requires external pull-up or pull-down resistors on certain pins.
5.3.1
Pull-down Resistor Requirements for TEST pins
The MPC5200B requires pull-down resistors on the test pins TEST_MODE_0, TEST_MODE_1,
TEST_SEL_1.
5.3.2
Pull-up Requirements for the PCI Control Lines
If the PCI interface is NOT used (and internally disabled) the PCI control pins must be terminated as
indicated by the PCI Local Bus specification [4]. This is also required for MOST/Graphics and Large Flash
Mode.
PCI control signals always require pull-up resistors on the motherboard (not the expansion board) to
ensure that they contain stable values when no agent is actively driving the bus. This includes
AVDD device pin
Power
Supply
source
< 1
10
200-400 pF
10
F
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MPC5200CVR400B | 制造商:Freescale Semiconductor 功能描述:IC, 32BIT PROCESSOR |
| MPC5200CVR400BR2 | 制造商:Freescale Semiconductor 功能描述:MPU MPC52XX RISC 32BIT 400MHZ 2.5V/3.3V 272BGA - Tape and Reel |
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| MPC5200VR400 | 功能描述:微處理器 - MPU NO-PB COMM 5200 400MHZ RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324 |
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