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參數(shù)資料
| 型號(hào)： | MCF5470 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | MCF547x Integrated Microprocessor Electrical Characteristics |
| 中文描述： | MCF547x集成的微處理器，電氣特性 |
| 文件頁數(shù)： | 5/28頁 |
| 文件大?。?/td> | 706K |
| 代理商： | MCF5470 |
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Supply Voltage Sequencing and Separation Cautions
MCF547x Integrated Microprocessor Electrical Characteristics, Rev. 2
Freescale Semiconductor
5
4
Supply Voltage Sequencing and Separation
Cautions
Figure 3
shows situations in sequencing the I/O V
DD
(EV
DD
), SDRAM V
DD
(SD V
DD
), PLL V
DD
(PLL
V
DD
), and Core V
DD
(IV
DD
).
Figure 3. Supply Voltage Sequencing and Separation Cautions
The relationship between SD V
DD
and EV
DD
is non-critical during power-up and power-down sequences.
Both SD V
DD
(2.5V or 3.3V) and EV
DD
are specified relative to IV
DD
.
4.1
Power Up Sequence
If EV
DD
/SD V
DD
are powered up with the IV
DD
at 0V, then the sense circuits in the I/O pads will cause
all pad output drivers connected to the EV
DD
/SD V
DD
to be in a high impedance state. There is no limit
on how long after EV
DD
/SD V
DD
powers up before IV
DD
must power up. IV
DD
should not lead the EV
DD
,
SD V
DD
or PLL V
DD
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.
EV
DD
, SD V
DD
(3.3V)
SD V
DD
(2.5V)
IV
DD
, PLL V
DD
Supplies Stable
2
1
3.3V
2.5V
1.5V
0
Time
NOTES:
1.
IV
DD
should not exceed EV
DD
, SD V
DD
or PLL V
DD
by more than
0.4V at any time, including power-up.
Recommended that IV
DD
/PLL V
DD
should track EV
DD
/SD V
DD
up to
0.9V, then separate for completion of ramps.
Input voltage must not be greater than the supply voltage (EV
DD
, SD V
DD
,
IV
DD
, or PLL V
DD
) by more than 0.5V at any time, including during power-up.
Use 1 microsecond or slower rise time for all supplies.
2.
3.
4.
D
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCF5470EC | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MCF547x ColdFire Microprocessor |
| MCF5470VR200 | 功能描述:微處理器 - MPU MCF547X V4ECORE MMU FPU 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(shí)鐘頻率:536 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| MCF5470VR200 | 制造商:Freescale Semiconductor 功能描述:IC 32BIT MPU 200MHZ BGA-388 制造商:Freescale Semiconductor 功能描述:IC, 32BIT MPU, 200MHZ, BGA-388 |
| MCF5470ZP200 | 功能描述:微處理器 - MPU MCF547X V4ECORE MMU FPU 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(shí)鐘頻率:536 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| MCF5471 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MCF547x Integrated Microprocessor Electrical Characteristics |
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