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參數(shù)資料
| 型號： | MCF5270AB100 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 100 MHz, RISC PROCESSOR, PQFP160 |
| 封裝： | ROHS COMPLIANT, PLASTIC, QFP-160 |
| 文件頁數(shù)： | 42/42頁 |
| 文件大?。?/td> | 554K |
| 代理商： | MCF5270AB100 |
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Design Recommendations
MCF5271 Integrated Microprocessor Hardware Specification, Rev. 4
Freescale Semiconductor
9
5.2.1
Supply Voltage Sequencing and Separation Cautions
OVDD is specified relative to VDD.
Figure 2. Supply Voltage Sequencing and Separation Cautions
5.2.1.1
Power Up Sequence
If OVDD is powered up with VDD at 0 V, then the sense circuits in the I/O pads cause all pad output drivers
connected to the OVDD to be in a high impedance state. There is no limit on how long after OVDD powers
up before VDD must power up. VDD should not lead the OVDD or VDDPLL 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 1
μs to avoid turning on the internal ESD protection clamp diodes.
The recommended power up sequence is as follows:
1. Use 1 ms or slower rise time for all supplies.
2. VDD and OVDD/VDDPLL should track up to 0.9 V, then separate for the completion of ramps with
OVDD going to the higher external voltages. One way to accomplish this is to use a low drop-out
voltage regulator.
5.2.1.2
Power Down Sequence
If VDD is powered down first, then sense circuits in the I/O pads cause all output drivers to be in a high
impedance state. There is no limit on how long after VDD powers down before OVDD/VDDPLL must power
down. VDD should not lag OVDD or VDDPLL going low by more than 0.4 V during power down or there
Supplies Stable
2
1
3.3V
2.5V
1.5V
0
Time
Notes:
VDD should not exceed OVDD or VDDPLL by more than 0.4 V
at any time, including power-up.
Recommended that VDD should track OVDD/VDDPLL up to
0.9 V, then separate for completion of ramps.
Input voltage must not be greater than the supply voltage (OVDD,
VDD, or VDDPLL) by more than 0.5 V at any time, including during power-up.
Use 1 ms or slower rise time for all supplies.
1.
2.
3.
4.
DC
P
o
w
e
rSupp
ly
V
o
ltage
VDD
OVDD, VDDPLL
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MCF5270CAB100 | 功能描述:32位微控制器 - MCU MCF5270 V2CORE 64K SRAM 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 最大時鐘頻率:90 MHz 程序存儲器大小: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 安裝風格:SMD/SMT |
| MCF5270CVM150 | 功能描述:微處理器 - MPU MCF5235 V2CORE 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 |
| MCF5270CVM150J | 功能描述:32位微控制器 - MCU V2CORE 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 最大時鐘頻率:90 MHz 程序存儲器大小: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 安裝風格:SMD/SMT |
| MCF5270CVM150R2 | 功能描述:微處理器 - MPU MCF5270 V2CORE 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 |
| MCF5270VM100 | 功能描述:微處理器 - MPU MCF5270 V2CORE 64KSRAM 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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