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参数资料
| 型号： | MCF53017CMJ240J |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | MICROPROCESSOR, PBGA256 |
| 封装： | 17 X 17 MM, ROHS COMPLIANT, PLASTIC, MAPBGA-256 |
| 文件页数： | 60/62页 |
| 文件大小： | 2365K |
| 代理商： | MCF53017CMJ240J |
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Hardware Design Considerations
MCF5301x Data Sheet, Rev. 5
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
7
Figure 3. Supply Voltage Sequencing and Separation Cautions
3.3.1
Power Up Sequence
If EVDD/SDVDD are powered up with the IVDD at 0V, 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 power up. IVDD should not lead the EVDD, SDVDD or PVDD by more than 0.4V 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 1
microsecond to avoid turning on the internal ESD protection clamp diodes.
The recommended power up sequence is as follows:
1.
Use 1 microsecond or slower rise time for all supplies.
2.
IVDD/PVDD and EVDD/SDVDD should track up to 0.9V and then separate for the completion of ramps with
EVDD/SDVDD going to the higher external voltages. One way to accomplish this is to use a low drop-out voltage
regulator.
3.3.2
Power Down Sequence
If IVDD/PVDD 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 PVDD power down before EVDD or SDVDD must power down. IVDD should
not lag EVDD, SDVDD, or PVDD going low by more than 0.4V 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/PVDD to 0V.
2.
Drop EVDD/SDVDD supplies.
EVDD, USBVDD (3.3V)
IVDD, PVDD
Time
3.3V
1.2V
0
D
C
P
o
w
e
rSup
p
ly
V
o
ltage
Notes:
1 IV
DD should not exceed EVDD, SDVDD or PVDD by more than 0.4V at any time, including power-up.
2 Recommended that IV
DD/PVDD should track EVDD/SDVDD up to 0.9V then separate for completion of ramps
3 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.
4 Use 1 microsecond or slower rise time for all supplies.
1
2
2.5V
Supplies Stable
SDVDD (2.5V - DDR)
1.8V
SDVDD (1.8V - DDR)
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相关代理商/技术参数 |
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|---|---|
| MCF5307 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:UART MODULE |
| MCF5307AI66B | 功能描述:微处理器 - MPU MCF5307 V3CORE 4KSRAM RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| MCF5307AI90B | 功能描述:微处理器 - MPU MCF5307 V3CORE 4KSRAM RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| MCF5307AI90BB1 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述: |
| MCF5307CAI66B | 功能描述:微处理器 - MPU MCF5307 V3CORE 4KSRAM RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
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