參數(shù)資料
型號： MC7457RX1333PC
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 1333 MHz, RISC PROCESSOR, CBGA483
封裝： 29 X 29 MM, 3.22 MM HEIGHT, 1.27 MM PITCH, CERAMIC, BGA-483
文件頁數(shù)： 53/73頁
文件大?。?/td> 1715K
代理商： MC7457RX1333PC
MPC7457 RISC Microprocessor Hardware Specifications, Rev. 7
Freescale Semiconductor
57
System Design Information
The QACK signal shown in Figure 26 is usually connected to the PCI bridge chip in a system and is an
input to the MPC7457 informing it that it can go into the quiescent state. Under normal operation this
occurs during a low-power mode selection. In order for COP to work, the MPC7457 must see this signal
asserted (pulled down). While shown on the COP header, not all emulator products drive this signal. If the
product does not, a pull-down resistor can be populated to assert this signal. Additionally, some emulator
products implement open-drain type outputs and can only drive QACK asserted; for these tools, a pull-up
resistor can be implemented to ensure this signal is deasserted when it is not being driven by the tool. Note
that the pull-up and pull-down resistors on the QACK signal are mutually exclusive and it is never
necessary to populate both in a system. To preserve correct power-down operation, QACK should be
merged via logic so that it also can be driven by the PCI bridge.
相關(guān)PDF資料
PDF描述
MC7457VG1000LC 32-BIT, 1000 MHz, RISC PROCESSOR, CBGA483
MC7457RX867NC 32-BIT, 867 MHz, RISC PROCESSOR, CBGA483
MC7457VG867NC 32-BIT, 867 MHz, RISC PROCESSOR, CBGA483
MC7457RX1267LC 32-BIT, 1267 MHz, RISC PROCESSOR, CBGA483
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC7457RX733NC 功能描述:IC MPU RISC 32BIT 483FCCBGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:MPC74xx 標準包裝:1 系列:MPC85xx 處理器類型:32-位 MPC85xx PowerQUICC III 特點:- 速度:1.2GHz 電壓:1.1V 安裝類型:表面貼裝 封裝/外殼:783-BBGA，F(xiàn)CBGA 供應商設(shè)備封裝:783-FCPBGA（29x29） 包裝:托盤
MC7457RX867NC 功能描述:微處理器 - MPU APOLO7 RV1.2 1.1V 105C RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MC7457TRX1000LC 制造商:Freescale Semiconductor 功能描述:MPC74XX RISC 32-BIT 0.13UM 1GHZ 1.5V/1.8V/2.5V 483-PIN FCCBG - Trays
MC7457TRX1000NC 功能描述:微處理器 - MPU APOLO7 RV1.2 1.1V -40C RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MC7457TRX1267LC 制造商:Freescale Semiconductor 功能描述:MPC74XX RISC 32-BIT 0.13UM 1.267GHZ 1.5V/1.8V/2.5V 483-PIN F - Trays
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