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  • 參數(shù)資料
    型號(hào): PSD4235F2V-B-90B81I
    廠商: 意法半導(dǎo)體
    英文描述: Flash In-System-Programmable Peripherals for 16-Bit MCUs
    中文描述: Flash在系統(tǒng)可編程外設(shè)的16位微控制器
    文件頁(yè)數(shù): 39/93頁(yè)
    文件大?。?/td> 503K
    代理商: PSD4235F2V-B-90B81I
    MCU
    CNTL0
    CNTL1
    CNTL2
    PD3
    PD0**
    ADIO0
    PF3-PF0
    68302, 68306
    MMC2001
    68330, 68331
    68332, 68340
    68LC302,
    MMC2001
    68HC16
    68HC912
    68HC812***
    80196
    80196SP
    80186
    80C161
    80C164-80C167
    80C51XA
    H8/3044
    M37702M2
    R/W
    LDS
    UDS
    *
    AS
    *
    R/W
    DS
    SIZ0
    *
    AS
    A0
    *
    WEL
    OE
    WEH
    AS
    *
    R/W
    R/W
    R/W
    WR
    WRL
    WR
    DS
    E
    E
    RD
    RD
    RD
    SIZ0
    LSTRB
    LSTRB
    BHE
    *
    BHE
    *
    AS
    E
    *
    ALE
    ALE
    ALE
    A0
    A0
    A0
    A0
    A0
    A0
    *
    *
    *
    *
    *
    *
    *
    DBE
    *
    *
    WRH
    *
    *
    WR
    RD
    BHE
    ALE
    A0
    WRL
    WRL
    R/W
    RD
    RD
    E
    PSEN
    *
    BHE
    WRH
    WRH
    *
    ALE
    AS
    ALE
    A4/D0
    A0
    A0
    A3-A1
    *
    PSD4000 Series
    Preliminary Information
    36
    The
    PSD4000
    Functional
    Blocks
    (cont.)
    9.3 Microcontroller Bus Interface
    The
    no-glue logic
    PSD4000 Microcontroller Bus Interface can be directly connected to
    most popular microcontrollers and their control signals. Key 16-bit microcontrollers with
    their bus types and control signals are shown in Table 14. The MCU interface type is
    specified using the PSDsoft.
    Table 14. Microcontrollers and their Control Signals
    **
    *
    Unused CNTL2 pin can be configured as GPLD input. Other unused pins (PD3-0, PF3-0) can be
    ***
    configured for other I/O functions.
    *
    **
    ALE/AS input is optional for microcontrollers with a non-multiplexed bus.
    ***
    This configuration is for 68C812A4_EC at 5MHz, 3V only.
    9.3.1. PSD4000 Interface to a Multiplexed Bus
    Figure 16 shows an example of a system using a microcontroller with a 16-bit multiplexed
    bus and a PSD4000. The ADIO port on the PSD4000 is connected directly to the
    microcontroller address/data bus. ALE latches the address lines internally. Latched
    addresses can be brought out to Port E, F or G. The PSD4000 drives the ADIO data bus
    only when one of its internal resources is accessed and the RD input is active. Should the
    system address bus exceed sixteen bits, Ports A, B, C, or F may be used as additional
    address inputs.
    9.3.2. PSD4000 Interface to a Non-Multiplexed Bus
    Figure 17 shows an example of a system using a microcontroller with a 16-bit
    non-multiplexed bus and a PSD4000. The address bus is connected to the ADIO Port, and
    the data bus is connected to Port F and G. Port F and G are in tri-state mode when the
    PSD4000 is not accessed by the microcontroller. Should the system address bus exceed
    sixteen bits, Ports A, B or C may be used for additional address inputs.
    相關(guān)PDF資料
    PDF描述
    PSD4235F2V-B-90J Flash In-System-Programmable Peripherals for 16-Bit MCUs
    PSD4235F2V-B-90JI Flash In-System-Programmable Peripherals for 16-Bit MCUs
    PSD4235F2V-C-12U Flash In-System-Programmable Peripherals for 16-Bit MCUs
    PSD4235F2V-C-12UI Flash In-System-Programmable Peripherals for 16-Bit MCUs
    PSD4235F2V-C-15B81 Flash In-System-Programmable Peripherals for 16-Bit MCUs
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