飞思卡尔MCF5227x开发方案

         飞思卡尔(Freescale)公司的MCF5227x是32位ColdFire微控制器系列,集成了LCD控制器和触摸屏模块,USB OTG模块以及CAN模块,128KB SRAM和DMA 控制器,为人机接口和工业控制应用提供了更多控制,更多灵活性和更多性能选择.本文介绍了MCF5227x 32位ColdFire微控制器的主要特性,方框图以及MCF5227x评估板的主要特性和详细的电路图.

         Freescale’s MCF5227x ColdFire microprocessor family is the ideal device for developers looking to add more control options to their consumer or industrial applications. Featuring an integrated LCD controller and touchscreen module, the MCF5227x family is designed to provide an easy way to add support for graphical LCD interfaces to industrial systems. 

        The MCF5227x devices are also equipped with integrated USB On-The-Go (OTG)
and CAN modules giving developers the ability to upgrade or standardize their serial
communications. The crossbar switch allows the 128K of integrated SRAM to be
accessed by the core, DMA, USB OTG and LCD controller, which helps improve performance.
        These and other features make the MCF5227x devices ideal for human interface applications that require a broad range of peripherals and high performance for multi-functional industrial and consumer applications.

        The MCF5227x family is also easy to use. Freescale provides a comprehensive suite of
development tools to help developers design in these devices quickly and easily.

        MCF5227x ColdFire微处理器特性:
        MCF5227x ColdFire® Microprocessor Features
        Version 2 ColdFire® Core with EMAC
        Up to 159 Dhrystone 2.1 MIPS  166.67 MHz
        Kbytes configurable cache (instruction only, data only, or split instruction/data)
        128 Kbytes internal SRAM
        Support for booting from SPI-compatible flash, EEPROM, and FRAM devices
        Crossbar switch technology (XBS) for concurrent access to peripherals or RAM from multiple bus masters
        16 channel DMA controller
        16- or 32-bit SDR/DDR controller
        USB 2.0 On-the-Go controller
        Liquid crystal display controller with support up to 800 × 600 pixels
        ADC and touchscreen controller
        FlexCAN module
        4 32-bit timers with DMA support
        DMA supported serial peripheral interface (DSPI)
        3 UARTs
        I2C bus interface
        Synchronous serial interface (SSI)
        Plus-width modulator (PWM)
        Real-time clock (RTC)
        Two programmable interrupt controllers (PIT)

                                                       图1.MCF5227x 方框图

        Target Applications
        Consumer 
        Operator Interfaces 
        Security Systems 
        HVAC Control Systems 
        Digital Picture frames 
        Industrial & Medical 
        Factory Maintenance Systems 
        Diagnostic Equipment 
        Medical Monitoring Equipment 
        Handheld Point of Sale 
        Badge Printers 
        MCF5227x评估板(EVB)
        The M52277 Evaluation Board (EVB) is based on the V2 ColdeFire Core with EMAC. This board is shipped with the MCF52277 populated to allow for the evaluation of all of the functionality of this part.
        This board was designed as a validation platform with maximum flexibility. Where possible weve also designed for power and speed but the primary goal of this system was flexibility

        MCF5227x评估板(EVB)主要特性:
        M52277 External Interfaces
        On Board Sharp 240 x 320 color touch screen LCD panel 
        60 pin external LCD connector 
        Synchronous Serial Interface (SSI) connected to audio CODEC 
        USB Support 
        MCF52277 on-chip OTG transceiver with device, host, and OTG support (Mini-AB receptacle) 
        Crystal/Clock 
        BDM/JTAG 
        Two UARTs 
        FlexBus 
        Timers 
        External Interrupts 
        CAN Support 
        External CAN transceiver (DB9 connector) 
        University Breakout Connector for serial interfaces (I2C, QSPI, GPIO, etc.) 
        Memory Subsystems
        32M x 16 Mobile DDR 
        8M x 16 NOR Flash 
        16Mbit Serial Boot Flash 
        Power
        Inputs 
        5 V Input to the voltage regulator circuitry 
        Regulated On-board voltages: 
        3.3 V - I/O Voltage 
        1.8 V - Mobile DDR and Flash Voltage 
        1.5 V - MCF52277 Core Voltage

图2.MCF5227x评估板(EVB)外形图

图3.MCF5227x评估板(EVB)电路图(1)

图4.MCF5227x评估板(EVB)电路图(2)



图5.MCF5227x评估板(EVB)电路图(3)



图6.MCF5227x评估板(EVB)电路图(4)



图7.MCF5227x评估板(EVB)电路图(5)



图8.MCF5227x评估板(EVB)电路图(6)



图9.MCF5227x评估板(EVB)电路图(7)



图10.MCF5227x评估板(EVB)电路图(8)



                                             图11.MCF5227x评估板(EVB)电路图(9)

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本文来源：飞思卡尔    作者：

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