- 您现在的位置：买卖IC网 > PDF目录3989 > KMPC853TVR66A (Freescale Semiconductor)IC MPU PWRQUICC 166MHZ 256-PBGA PDF资料下载
参数资料
| 型号： | KMPC853TVR66A |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 3/88页 |
| 文件大小： | 0K |
| 描述： | IC MPU PWRQUICC 166MHZ 256-PBGA |
| 标准包装： | 2 |
| 系列： | MPC8xx |
| 处理器类型： | 32-位 MPC8xx PowerQUICC |
| 速度： | 166MHz |
| 电压： | 1.8V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 256-BGA |
| 供应商设备封装： | 256-PBGA（23x23） |
| 包装： | 托盘 |
第1页第2页当前第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页
MPC853T Hardware Specification, Rev. 1
Freescale Semiconductor
11
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. It determines the junction temperature with a measurement of the
temperature at the top center of the package case using the following equation:
TJ = TT + (ΨJT × 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 the JESD51-2 specification 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 flat against the
package case to avoid measurement errors caused by cooling effects of the thermocouple wire.
8
Power Supply and Power Sequencing
This section provides design considerations for the MPC853T power supply. The MPC853T has a core voltage
(VDDL) and PLL voltage (VDDSYN), which both operate at lower voltages than the I/O voltage VDDH. The I/O
section of the MPC853T is supplied with 3.3 V across VDDH and VSS (GND).
The signals PA[0:3], PA[8:11], PB15, PB[24:25]; PB[28:31], PC[4:7], PC[12:13], PC15] PD[3:15], TDI, TDO,
TCK, TRST, 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 can not exceed 5.5 V, and 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.
These cautions are necessary for the long-term reliability of the part. If they are violated, the electrostatic discharge
(ESD) protection diodes are forward-biased, and excessive current can flow through these diodes. If the system
power supply design does not control the voltage sequencing, the circuit shown in Figure 2 can be added to meet
these requirements. The MUR420 Schottky diodes control the maximum potential difference between the external
bus and core power supplies on power up and the 1N5820 diodes regulate the maximum potential difference on
power down.
相关PDF资料 |
PDF描述 |
|---|---|
| KMPC853TVR100A | IC MPU PWRQUICC 100MHZ 256PBGA |
| IDT7054S20PRF | IC SRAM 32KBIT 20NS 128TQFP |
| IDT70V657S15BF8 | IC SRAM 1.125MBIT 15NS 208FBGA |
| IDT70V657S15BC8 | IC SRAM 1.125MBIT 15NS 256BGA |
| IDT70V3579S5BF8 | IC SRAM 1.125MBIT 5NS 208FBGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| KMPC853TZT100A | 功能描述:微处理器 - MPU POWER QUICC I HIP6W 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 |
| KMPC853TZT66A | 功能描述:微处理器 - MPU POWER QUICC I HIP6W 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 |
| KMPC8540CPX667JB | 功能描述:微处理器 - MPU PQ 3 8540DRACOM 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 |
| KMPC8540CVT667JB | 功能描述:微处理器 - MPU PQ 3 8540-DRACOM 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 |
| KMPC8540PX667LB | 功能描述:微处理器 - MPU PQ 3 8540DRACOM 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 |
发布紧急采购，3分钟左右您将得到回复。