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参数资料
| 型号： | MPC8245LZU266B |
| 厂商： | MOTOROLA INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 266 MHz, RISC PROCESSOR, PBGA352 |
| 封装： | 35 X 35 MM, 1.65 MM HEIGHT, 1.27 MM PITCH, CAVITY-UP, TBGA-352 |
| 文件页数： | 41/64页 |
| 文件大小： | 940K |
| 代理商： | MPC8245LZU266B |
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46
MPC8245 Integrated Processor Hardware Specifications
MOTOROLA
System Design Information
Reset configuration pins should be tied to GND via 1-k
pull-down resistors to ensure a logic zero level is
read into the configuration bits during reset if the default logic-one level is not desired.
Any other unused active low input pins should be tied to a logic-one level via weak pull-up resistors
(2–10 k
) to the appropriate power supply listed in Table 17. Unused active high input pins should be tied
to GND via weak pull-down resistors (2–10 k
).
1.7.5
PCI Reference Voltage—LVDD
The MPC8245 PCI reference voltage (LVDD) pins should be connected to 3.3 ± 0.3 V power supply if
interfacing the MPC8245 into a 3.3-V PCI bus system. Similarly, the LVDD pins should be connected to
5.0 V ± 5% power supply if interfacing the MPC8245 into a 5-V PCI bus system. For either reference
voltage, the MPC8245 always performs 3.3-V signaling as described in the PCI Local Bus Specification
(Rev. 2.2). The MPC8245 tolerates 5-V signals when interfaced into a 5-V PCI bus system.
1.7.6
MPC8245 Compatibility with MPC8240
The MPC8245 AC timing specifications are backwards-compatible with those of the MPC8240, except for
the requirements of item 11 in Table 10. Timing adjustments are needed as specified for Tos
(SDRAM_SYNC_IN to sys_logic_clk offset) time requirements.
The MPC8245 does not support the SDRAM flow-through memory interface.
The nominal core VDD power supply changes from 2.5 V on the MPC8240 to 1.8/2.0 V on the MPC8245.
See Table 2 for details.
The MPC8245 PLL_CFG[0:4] setting 0x02 (0b00010) has a different ‘PCI-to-Mem’ and ‘Mem-to-CPU’
multiplier ratio than the same setting on the MPC8240, and thus, is not backwards-compatible. See Table 18
for details.
Most of the MPC8240 PLL_CFG[0:4] settings are subsets of the PCI_SYNC_IN input frequency range
accepted by the MPC8245. However, the parts will not be fully backwards-compatible since the ranges of
the two parts do not always match. Note that modes 0x8 and 0x18 of the MPC8245 are not compatible with
There are two additional reset configuration signals on the MPC8245 which are not used as reset
configuration signals on the MPC8240: SDMA0 and SDMA1.
The SDMA0 reset configuration pin selects between the MPC8245 DUART or the MPC8240 backwards
compatible mode PCI_CLK[0:4] functionality on these multiplexed signals. The default state (logic 1) of
SDMA0 selects the MPC8240 backwards compatible mode of PCI_CLK[0:4] functionality while a logic 0
state on the SDMA0 signal selects DUART functionality. Note if using the DUART mode, four of the five
PCI clocks, PCI_CLK[0:3], are not available.
The SDMA1 reset configuration pin selects between MPC8245 extended ROM functionality or MPC8240
backwards-compatible functionality on the multiplexed signals: TBEN, CHKSTOP_IN, SRESET,
TRIG_IN, and TRIG_OUT. The default state (logic 1) of SDMA1 selects the MPC8240
backwards-compatible mode functionality, while a logic 0 state on the SDMA1 signal selects extended
ROM functionality. Note if using the extended ROM mode, TBEN, CHKSTOP_IN, SRESET, TRIG_IN,
and TRIG_OUT functionality are not available.
The driver names and capability of the pins for the MPC8245 and that of the MPC8240 vary slightly. Refer
to the Drive Capability table (for the ODCR register at 0x73) in the MPC8240 Integrated Processor
Hardware Specifications and Table 4 for more details.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC8245LZU266D | 功能描述:微处理器 - MPU 266MHz 505.4MIPS 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 |
| MPC8245LZU300D | 功能描述:微处理器 - MPU 300MHz 570MIPS 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 |
| MPC8245LZU333D | 功能描述:微处理器 - MPU 333MHz 632.7MIPS 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 |
| MPC8245LZU350D | 功能描述:微处理器 - MPU 350MHz 665MIPS 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 |
| MPC8245RZU400D | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Part Number Specification for the MPC8245ARZUnnnX Series |
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