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    參數(shù)資料
    型號: PSD835F1-B-70UI
    廠商: 意法半導體
    英文描述: Configurable Memory System on a Chip for 8-Bit Microcontrollers
    中文描述: 在8片位微控制器可配置存儲系統(tǒng)
    文件頁數(shù): 31/110頁
    文件大?。?/td> 570K
    代理商: PSD835F1-B-70UI
    PSD8XX Family
    PSD835G2
    30
    The
    PSD835G2
    Functional
    Blocks
    (cont.)
    MAIN
    FLASH
    DPLD
    FLASH
    BOOT
    BLOCK
    SRAM
    RS0
    CSBOOT0-3
    FS0-7
    CS
    CS
    CS
    OE
    OE
    RD
    PSEN
    OE
    Figure 7. 80C51 Memory Modes – Separate Space Mode
    MAIN
    FLASH
    DPLD
    FLASH
    BOOT
    BLOCK
    SRAM
    RS0
    CSBOOT0-3
    FS0-7
    RD
    CS
    CS
    CS
    RD
    OE
    OE
    VM REG BIT 2
    PSEN
    VM REG BIT 0
    VM REG BIT 1
    VM REG BIT 3
    VM REG BIT 4
    OE
    Figure 8. 80C51 Memory Mode – Combined Space Mode
    9.1.3.2 Configuration Modes for MCUs with Separate Program and Data Spaces
    9.1.3.2.1 Separate Space Modes
    Code memory space is separated from data memory space. For example, the PSEN
    signal is used to access the program code from the main Flash Memory, while the RD
    signal is used to access data from the secondary Flash memory, SRAM and I/O Ports.
    This configuration requires the VM register to be set to 0Ch.
    9.1.3.2.2 . Combined Space Modes
    The program and data memory spaces are combined into one space that allows the main
    Flash Memory, secondary Flash memory, and SRAM to be accessed by either PSEN or
    RD. For example, to configure the main Flash memory in combined space mode, bits 2
    and 4 of the VM register are set to
    1
    .
    9.1.3.3 80C51XA Memory Map Example
    See Application Notes for examples.
    相關PDF資料
    PDF描述
    PSD835F1-B-90B81 Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD835F1-B-90B81I Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD835F1-B-90J Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD835F1-B-90JI Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD835F1-B-90M Configurable Memory System on a Chip for 8-Bit Microcontrollers
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