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參數(shù)資料
| 型號： | MCF54454VR266 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 266 MHz, RISC PROCESSOR, PBGA360 |
| 封裝： | 23 X 23 MM, ROHS COMPLIANT, TEPBGA-360 |
| 文件頁數(shù)： | 45/48頁 |
| 文件大?。?/td> | 945K |
| 代理商： | MCF54454VR266 |
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MCF5445x ColdFire Microprocessor Data Sheet, Rev. 6
Hardware Design Considerations
Freescale Semiconductor
6
3.2
Oscillator Power Filtering
Figure 3 shows an example for isolating the oscillator power supply from the I/O supply (EVDD) and ground.
Figure 3. Oscillator Power Filter
3.3
Supply Voltage Sequencing
Figure 4 shows situations in sequencing the I/O VDD (EVDD), SDRAM VDD (SDVDD), PLL VDD (PVDD), and internal
logic/core VDD (IVDD).
Figure 4. Supply Voltage Sequencing and Separation Cautions
The relationship between SDVDD and EVDD is non-critical during power-up and power-down sequences. SDVDD (2.5V or
1.8V) and EVDD are specified relative to IVDD.
VDD_OSC
10
Ω
0.1 F
EVDD Pin
1 F
GND
VSS_OSC
100 MHz
EVDD (3.3V)
IVDD, PVDD
Time
3.3V
1.5V
0
D
C
Po
wer
Su
ppl
y
V
olt
age
Notes:
1 Input voltage must not be greater than the supply voltage (EV
DD, SDVDD, IVDD, or PVDD) by more than 0.5V
at any time, including during power-up.
2 Use 50 V/millisecond or slower rise time for all supplies.
2.5V
Supplies Stable
SDVDD (2.5V — DDR)
1.8V
SDVDD (1.8V — DDR2)
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| MCF54455VR266 | 32-BIT, 266 MHz, RISC PROCESSOR, PBGA360 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCF54455 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ColdFire㈢ Microprocessor |
| MCF54455_08 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ColdFire㈢ Microprocessor |
| MCF54455_0812 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MCF5445x ColdFire?? Microprocessor Data Sheet |
| MCF54455_09 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MCF5445x ColdFire?? Microprocessor Data Sheet |
| MCF54455ACVR200 | 制造商:Freescale Semiconductor 功能描述:MCF5445X RISC 32-BIT 200MHZ 1.8V/2.5V/3.3V 360-PIN TEBGA TRA - Trays |
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