参数资料
型号: MPC8572EAMC
厂商: Freescale Semiconductor
文件页数: 50/72页
文件大小: 0K
描述: MPC8572 AMC RAPID SYSTEM
标准包装: 1
系列: PowerQUICC III™
类型: MPU
适用于相关产品: MPC8572E
所含物品:
MPC8572EAMC Functional Description
generate a combined resistance of 29.201 k Ω = 1.1001 V). Similarly, the Power-One YM12S05 (3.3 V
voltage regulator) requires a trim resistor of 3.12 k Ω . (A parallel resistor combination (3.3 k Ω //59 k Ω ) is
used to create a resistance value of 3.125 k Ω . This gives an output voltage of 3.298 V).
The Maxim MAX8526 device also has a configurable output voltage that uses a similar resistor
arrangement to select the desired output voltage. Manufacturers guidelines recommend VFB = 0.5 V and
R2 < 5 k Ω in order to optimize quiescent current, accuracy, and high-frequency power-supply rejection.
R2 is chosen to be 4.7 k Ω . Selection of the desired output voltage is given using the following equations.
Substituting these values into the equations above for Vout values of 2.5 and 1.2 V yields: 2.5 V = 18.8 k Ω ,
1.2 V = 6.58 k Ω . Using standard resistance values, the closest resistors are 18.7 k Ω and 6.98 k Ω
respectively. Table 5-16 summarizes the trim resistors required for the Power-one and Maxim devices on
the MPC8572EAMC.
Table 5-16. Voltage Regulation/Device Parameters
PSU Voltage
Manufacturer
Vout (V) Trim Resistor (k Ω ) Trim Resistor Standard Value (k Ω ) Vout Actual (V)
3.3
2.5
1.2
1.1
Power-One—YM12S05
Maxim—MAX8526
Maxim—MAX8526
Power-One—YNC12S20
3.3
2.5
1.2
1.1
3.122 k Ω
R1 = 18.7 k Ω
R2 = 4.7 k Ω
R1 = 6.98 k Ω
R2 = 4.99 k Ω
29.216 k Ω
3.3 k Ω //59 k Ω
R1 = 18K7
R1 = 6.57 k Ω
43 k Ω //91k Ω
3.298
2.489
1.198
1.1001
The MPC8572E requires its power rails to be applied in specific sequence in order to ensure proper device
operation. These requirements are as follows for power up:
1. VDD, AVDD_ n , BVDD, SCOREVDD, LVDD, TVDD, XVDD, OVDD
2. GVDD
All supplies must be at their stable values within 50 ms. Correct power rail sequencing is achieved by via
CPLD control.
MPC8572EAMC Advanced Mezzanine Card User Guide, Rev. 1.2
5-26
Freescale Semiconductor
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参数描述
MPC8572EAMC-SA 制造商:Freescale Semiconductor 功能描述:MPC8572 AMC RAPID SYSTEM - Bulk
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MPC8572ECLPXATLD 功能描述:微处理器 - MPU 1200 ExtTmp LwPwr 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
MPC8572ECLPXATLE 功能描述:微处理器 - MPU R211 Enc SnPb 1200LP Ext 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
MPC8572ECLPXAULD 功能描述:微处理器 - MPU 1333 EXT TEMP 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