收藏本站
参数资料
型号： MPC870ZT66
厂商： Freescale Semiconductor
文件页数： 7/84页
文件大小： 0K
描述： IC MPU POWERQUICC 66MHZ 256PBGA
标准包装： 60
系列： MPC8xx
处理器类型： 32-位 MPC8xx PowerQUICC
速度： 66MHz
电压： 3.3V
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
MPC875/MPC870 PowerQUICC Hardware Specifications, Rev. 4
Freescale Semiconductor
15
Mandatory Reset Configurations
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 4 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.
Figure 4. Example Voltage Sequencing Circuit
9
Mandatory Reset Configurations
The MPC875/MPC870 requires a mandatory configuration during reset.
If hardware reset configuration word (HRCW) is enabled, the HRCW[DBGC] value needs to be set to
binary X1 in the HRCW and the SIUMCR[DBGC] should be programmed with the same value in the boot
code after reset. This can be done by asserting the RSTCONF during HRESET assertion.
If HRCW is disabled, the SIUMCR[DBGC] should be programmed with binary X1 in the boot code after
reset by negating the RSTCONF during the HRESET assertion.
The MBMR[GPLB4DIS], PAPAR, PADIR, PBPAR, PBDIR, PCPAR, and PCDIR need to be configured
with the mandatory values in Table 7 in the boot code after the reset is negated.
Table 7. Mandatory Reset Configuration of MPC875/MPC870
Register/Configuration
Field
Value
(Binary)
HRCW (Hardware reset configuration word)
HRCW[DBGC]
X1
SIUMCR (SIU module configuration register)
SIUMCR[DBGC]
X1
MBMR (Machine B mode register)
MBMR[GPLB4DIS}
0
PAPAR (Port A pin assignment register)
PAPAR[5:9]
PAPAR[12:13]
0
VDDH
VDDL
1N5820
MUR420
相关PDF资料
PDF描述
FSM43DSEN-S243 CONN EDGECARD 86POS .156 EYELET
MC68SEC000AA20R2 IC MPU 32BIT 20MHZ 64-QFP
FSM43DSEH-S243 CONN EDGECARD 86POS .156 EYELET
MC68EC000EI10 IC MPU 32BIT 10MHZ 68-PLCC
MPC852TZT66A IC MPU POWERQUICC 66MHZ 256PBGA
相关代理商/技术参数
参数描述
MPC870ZT80 功能描述:微处理器 - MPU PQ I HIP6W DUET 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
MPC870ZTZZ 制造商:Freescale Semiconductor 功能描述:
MPC875CVR133 功能描述:微处理器 - MPU 133 MHz 176 MIPS 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
MPC875CVR66 功能描述:微处理器 - MPU 66 MHz 87 MIPS 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
MPC875CZT133 功能描述:微处理器 - MPU PQ I HIP6W DUET 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。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*