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      參數(shù)資料
      型號: PSD4135G3V-90U
      廠商: 意法半導(dǎo)體
      英文描述: Ceramic Commercial-Off-The-Shelf Surface Mount Capacitors (COTS); Capacitance [nom]: 68pF; Working Voltage (Vdc)[max]: 50V; Capacitance Tolerance: +/-5%; Dielectric: Multilayer Ceramic; Temperature Coefficient: C0G (NP0); Lead Style: Surface Mount Chip; Lead Dimensions: 1206; Termination: Tin (Sn) Plated Nickel Barrier; Body Dimensions: 0.126&quot; x 0.063&quot;; Container: Bulk; Features: MIL-PRF-55681; Unmarked
      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): 41/93頁
      文件大?。?/td> 503K
      代理商: PSD4135G3V-90U
      PSD4000 Series
      Preliminary Information
      38
      9.3.3 Data Byte Enable Reference
      Microcontrollers have different data byte orientations. The following tables show how the
      PSD4135G2 interprets byte/word operation in different bus write configurations. Even-byte
      refers to locations with address A0 equal to zero and odd byte as locations with A0 equal
      to one.
      9.3.4 Microcontroller Interface Examples
      Figures 14 through 17 show examples of the basic connections between the PSD4135G2
      and some popular microcontrollers. The PSD4135G2 Control input pins are labeled as the
      microcontroller function for which they are configured. The MCU interface is specified using
      PSDsoft. The PE6 pin should be grounded if Vstby is not used.
      9.3.4.1 80C196 and 80C186
      In Figure 14, the Intel 80C196 microcontroller, which has a multiplexed sixteen-bit bus, is
      shown connected to a PSD4135G2. The WR and RD signals are connected to the
      CNTL0-1 pins. The BHE signal is used for high data byte selection. If BHE is not used, the
      PSD can be configured to receive the WRL and WRH from the MCU. Higher address
      inputs (A16-A19) can be routed to Port A, B or C as inputs to the PLD.
      The AMD 80186 family has the same bus connection to the PSD as the 80C196.
      BHE
      A0
      D15-D8
      D7-D0
      0
      0
      1
      0
      1
      0
      Odd Byte
      Odd Byte
      Even Byte
      Even Byte
      Table 15. 16-Bit Data Bus with BHE
      The
      PSD4000
      Functional
      Blocks
      (cont.)
      WRH
      WRL
      D15-D8
      D7-D0
      0
      0
      1
      0
      1
      0
      Odd Byte
      Odd Byte
      Even Byte
      Even Byte
      Table 16. 16-Bit Data Bus with WRH and WRL
      SIZ0
      A0
      D15-D8
      D7-D0
      0
      1
      1
      0
      0
      1
      Even Byte
      Even Byte
      Odd Byte
      Odd Byte
      Table 17. 16-Bit Data Bus with SIZ0, A0 (Motorola MCU)
      LDS
      UDS
      D15-D8
      D7-D0
      0
      1
      0
      0
      0
      1
      Even Byte
      Even Byte
      Odd Byte
      Odd Byte
      Table 18. 16-Bit Data Bus with UDS, LDS (Motorola MCU)
      相關(guān)PDF資料
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      PSD4135G3V-90UI Flash In-System-Programmable Peripherals for 16-Bit MCUs
      PSD4135G3V-A-12J Flash In-System-Programmable Peripherals for 16-Bit MCUs
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      參數(shù)描述
      PSD4135G3V-90UI 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs
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