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参数资料
| 型号： | MPC859TZP133 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 133 MHz, RISC PROCESSOR, PBGA357 |
| 封装： | PLASTIC, BGA-357 |
| 文件页数： | 6/92页 |
| 文件大小： | 1018K |
| 代理商： | MPC859TZP133 |
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14
MPC866/859 Hardware Specications
MOTOROLA
Power Supply and Power Sequencing
7.5
Experimental Determination
To determine the junction temperature of the device in the application after prototypes are available, the
thermal characterization parameter (
ΨJT) can be used to determine the junction temperature with a
measurement of the temperature at the top center of the package case using the following equation:
TJ = TT +(ΨJT x PD)
where:
Ψ
JT = thermal characterization parameter
TT = thermocouple temperature on top of package
PD = power dissipation in package
The thermal characterization parameter is measured per JESD51-2 specication published by JEDEC using
a 40 gauge type T thermocouple epoxied to the top center of the package case. The thermocouple should be
positioned so that the thermocouple junction rests on the package. A small amount of epoxy is placed over
the thermocouple junction and over about 1 mm of wire extending from the junction. The thermocouple wire
is placed at against the package case to avoid measurement errors caused by cooling effects of the
thermocouple wire.
7.6
References
Semiconductor Equipment and Materials International
(415) 964-5111
805 East Middleeld Rd.
Mountain View, CA 94043
MIL-SPEC and EIA/JESD (JEDEC) specications
800-854-7179 or
(Available from Global Engineering Documents)
303-397-7956
JEDEC Specications
http://www.jedec.org
1. C.E. Triplett and B. Joiner, “An Experimental Characterization of a 272 PBGA Within an Automotive
Engine Controller Module,” Proceedings of SemiTherm, San Diego, 1998, pp. 47-54.
2. B. Joiner and V. Adams, “Measurement and Simulation of Junction to Board Thermal Resistance and Its
Application in Thermal Modeling,” Proceedings of SemiTherm, San Diego, 1999, pp. 212-220.
8
Power Supply and Power Sequencing
This section provides design considerations for the MPC866/859 power supply. The MPC866/859 has a
core voltage (VDDL) and PLL voltage (VDDSYN) that operates at a lower voltage than the I/O voltage
VDDH. The I/O section of the MPC866/859 is supplied with 3.3 V across VDDH and VSS (GND).
Signals PA[0:15], PB[14:31], PC[4:15], PD[3:15], TDI, TDO, TCK, TRST_B, TMS, MII_TXEN, and
MII_MDIO are 5-V tolerant. All inputs cannot be more than 2.5 V greater than VDDH. In addition, 5-V
tolerant pins cannot exceed 5.5 V and the remaining input pins cannot exceed 3.465 V. This restriction
applies to power up/down and normal operation.
One consequence of multiple power supplies is that when power is initially applied the voltage rails ramp
up at different rates. The rates depend on the nature of the power supply, the type of load on each power
supply, and the manner in which different voltages are derived. The following restrictions apply:
VDDL must not exceed VDDH during power up and power down.
VDDL must not exceed 1.9 V and VDDH must not exceed 3.465 V.
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| MPC860DECVR50D4 | 功能描述:微处理器 - MPU POWER QUICC-NO LEAD 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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