參數(shù)資料
    型號: PSD4135G1V-90M
    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
    文件頁數(shù): 9/93頁
    文件大?。?/td> 503K
    代理商: PSD4135G1V-90M
    PSD4000
    Architectural
    Overview
    (cont.)
    4.5 ISP via JTAG Port
    In-System Programming can be performed through the JTAG pins on Port E. This serial
    interface allows complete programming of the entire PSD4000 device. A blank device can
    be completely programmed. The JTAG signals (TMS, TCK, TSTAT, TERR, TDI, TDO) can
    be multiplexed with other functions on Port E. Table 3 indicates the JTAG signals pin
    assignments.
    4.6 In-System Programming (ISP)
    Using the JTAG signals on Port E, the entire PSD4000 (memory, logic, configuration)
    device can be programmed or erased without the use of the microcontroller.
    Port E Pins
    PE0
    PE1
    PE2
    PE3
    PE4
    PE5
    JTAG Signal
    TMS
    TCK
    TDI
    TDO
    TSTAT
    TERR
    Table 3. JTAG Signals on Port E
    PSD4000 Series
    Preliminary Information
    6
    4.7 In-Application re-Programming (IAP)
    The main Flash memory can also be programmed in-system by the microcontroller
    executing the programming algorithms out of the secondary Flash memory, or SRAM.
    Since this is a sizable separate block, the application can also continue to operate. The
    secondary Flash boot memory can be programmed the same way by executing out of the
    main Flash memory. Table 4 indicates which programming methods can program different
    functional blocks of the PSD4000.
    Device
    Programmer
    Yes
    Yes
    Yes
    Yes
    Functional Block
    Main Flash memory
    Flash Boot memory
    PLD Array (DPLD and GPLD)
    PSD Configuration
    JTAG-ISP
    Yes
    Yes
    Yes
    Yes
    IAP
    Yes
    Yes
    No
    No
    Table 4. Methods of Programming Different Functional Blocks of the PSD4000
    4.8 Page Register
    The eight-bit Page Register expands the address range of the microcontroller by up to
    256 times.The paged address can be used as part of the address space to access
    external memory and peripherals or internal memory and I/O. The Page Register can also
    be used to change the address mapping of blocks of Flash memory into different memory
    spaces for IAP.
    4.9 Power Management Unit
    The Power Management Unit (PMU) in the PSD4000 gives the user control of the
    power consumption on selected functional blocks based on system requirements. The
    PMU includes an Automatic Power Down unit (APD) that will turn off device functions due
    to microcontroller inactivity. The APD unit has a Power Down Mode that helps reduce
    power consumption.
    The PSD4000 also has some bits that are configured at run-time by the MCU to reduce
    power consumption of the GPLD. The turbo bit in the PMMR0 register can be turned off
    and the GPLD will latch its outputs and go to standby until the next transition on its inputs.
    Additionally, bits in the PMMR2 register can be set by the MCU to block signals from
    entering the GPLD to reduce power consumption. See section 9.5.
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