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      參數(shù)資料
      型號(hào): PSD935F1-C-15B81I
      廠商: 意法半導(dǎo)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(chǔ)系統(tǒng)
      文件頁數(shù): 67/91頁
      文件大?。?/td> 488K
      代理商: PSD935F1-C-15B81I
      PSD9XX
      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 PSD935G2 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 PSD935G2 (memory, logic, configuration)
      device can be programmed or erased without the use of the microcontroller.
      Port E Pins
      JTAG Signal
      PE0
      TMS
      PE1
      TCK
      PE2
      TDI
      PE3
      TDO
      PE4
      TSTAT
      PE5
      TERR
      Table 3. JTAG Signals on Port E
      PSD9XX Family
      PSD935G2
      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 PSD9XX.
      Device
      Functional Block
      JTAG-ISP
      Programmer
      IAP
      Main Flash memory
      Yes
      Flash Boot memory
      Yes
      PLD Array (DPLD and GPLD)
      Yes
      No
      PSD Configuration
      Yes
      No
      Table 4. Methods of Programming Different Functional Blocks of the PSD935G2
      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 PSD935G2 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 PSD935G2 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.
      相關(guān)PDF資料
      PDF描述
      PSD935F1-C-15J Configurable Memory System on a Chip for 8-Bit Microcontrollers
      PSD935F1-C-15JI Configurable Memory System on a Chip for 8-Bit Microcontrollers
      PSD935F1-C-15M Configurable Memory System on a Chip for 8-Bit Microcontrollers
      PSD935F1-C-90B81I Ceramic Chip Capacitors / MIL-PRF-55681; Capacitance [nom]: 200pF; Working Voltage (Vdc)[max]: 100V; Capacitance Tolerance: +/-5%; Dielectric: Multilayer Ceramic; Temperature Coefficient: C0G (NP0); Lead Style: Surface Mount Chip; Lead Dimensions: 0805; Termination: 100% Tin (Sn); Body Dimensions: 0.080&quot; x 0.050&quot; x 0.055&quot;; Container: Bag; Features: MIL-PRF-55681: S Failure Rate
      PSD935F1-C-90J Configurable Memory System on a Chip for 8-Bit Microcontrollers
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