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參數(shù)資料
| 型號(hào)： | MCF53012CQT240 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MICROPROCESSOR, PQFP208 |
| 封裝： | 28 X 28 MM, ROHS COMPLIANT, LQFP-208 |
| 文件頁數(shù)： | 16/62頁 |
| 文件大小： | 2365K |
| 代理商： | MCF53012CQT240 |
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Preliminary Electrical Characteristics
MCF5301x Data Sheet, Rev. 5
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
23
Figure 9. USB VDD Power Filter
NOTE
In addition to the above filter circuitry, a 0.01 F capacitor is also recommended in parallel
with those shown.
5.4.3
Supply Voltage Sequencing and Separation Cautions
The relationship between SDVDD and EVDD is non-critical during power-up and power-down sequences. Both SDVDD (2.5V
or 3.3V) and EVDD are specified relative to IVDD.
5.4.3.1
Power Up Sequence
If EVDD/SDVDD are powered up with IVDD at 0 V, then the sense circuits in the I/O pads will cause all pad output drivers
connected to the EVDD/SDVDD to be in a high impedance state. There is no limit on how long after EVDD/SDVDD powers up
before IVDD must powered up. IVDD should not lead the EVDD, SDVDD or PLLVDD by more than 0.4 V during power ramp-up,
or there will be high current in the internal ESD protection diodes. The rise times on the power supplies should be slower than
500 us to avoid turning on the internal ESD protection clamp diodes.
5.4.3.2
Power Down Sequence
If IVDD/PLLVDD 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 IVDD and PLLVDD power down before EVDD or SDVDD must power
down. IVDD should not lag EVDD, SDVDD, or PLLVDD going low by more than 0.4 V 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:
1.
Drop IVDD/PLLVDD to 0 V.
2.
Drop EVDD/SDVDD supplies.
Board EVDD
0
Ω
0.1 F
USB VDD Pin
10 F
GND
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MCF53015CMJ240 | MICROPROCESSOR, PBGA256 |
| MCF53017CMJ240 | MICROPROCESSOR, PBGA256 |
| MCF53016CMJ240J | MICROPROCESSOR, PBGA256 |
| MCF53016CMJ240 | MICROPROCESSOR, PBGA256 |
| MCF53013CQT240 | MICROPROCESSOR, PQFP208 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCF53013CQT240 | 功能描述:32位微控制器 - MCU LONGJING C&I CFV3 VOIP+S RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:90 MHz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT |
| MCF53014CMJ240 | 制造商:Freescale Semiconductor 功能描述:MCF5301X RISC 32-BIT CMOS 240MHZ 3.3V - Bulk 制造商:Rochester Electronics LLC 功能描述: |
| MCF53014CMJ240J | 功能描述:32位微控制器 - MCU CFV3 RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:90 MHz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT |
| MCF53015CMJ240 | 制造商:Freescale Semiconductor 功能描述:MCF5301X RISC 32-BIT CMOS 240MHZ 3.3V - Bulk |
| MCF53015CMJ240J | 功能描述:32位微控制器 - MCU CFV3 SECURITY RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:90 MHz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT |
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