參數(shù)資料
      型號(hào): X28C256S-35
      英文描述: 5 Volt, Byte Alterable E2PROM
      中文描述: 5伏,可變E2PROM的字節(jié)
      文件頁(yè)數(shù): 13/24頁(yè)
      文件大?。?/td> 113K
      代理商: X28C256S-35
      X28C256
      13
      WRITE CYCLE LIMITS
      Symbol
      Parameter
      Min.
      (9)
      Typ.
      (6)
      Max.
      Units
      t
      WC(7)
      t
      AS
      t
      AH
      t
      CS
      t
      CH
      t
      CW
      t
      OES
      t
      OEH
      t
      WP
      t
      WPH
      t
      WPH2(8)
      t
      DV
      t
      DS
      t
      DH
      t
      DW
      t
      BLC(9)
      Write Cycle Time
      Address Setup Time
      Address Hold Time
      Write Setup Time
      Write Hold Time
      CE
      Pulse Width
      OE
      HIGH Setup Time
      OE
      HIGH Hold Time
      WE
      Pulse Width
      WE
      HIGH Recovery
      SDP
      WE
      Recovery
      Data Valid
      Data Setup
      Data Hold
      Delay to Next Write
      Byte Load Cycle
      5
      10
      ms
      ns
      ns
      ns
      ns
      ns
      ns
      ns
      ns
      ns
      μ
      s
      μ
      s
      ns
      ns
      μ
      s
      μ
      s
      3855 PGM T11.1
      0
      150
      0
      0
      100
      10
      10
      100
      50
      1
      1
      50
      10
      10
      1
      100
      WE
      Controlled Write Cycle
      3855 FHD F06
      Notes:
      (6) Typical values are for T
      A
      = 25
      °
      C and nominal supply voltage.
      (7) t
      WC
      is the minimum cycle time to be allowed from the system perspective unless polling techniques are used. It is the maximum
      time the device requires to automatically complete the internal write operation.
      (8) t
      WPH
      is the normal page write operation
      WE
      recovery time. t
      WPH2
      is the
      WE
      recovery time needed only after the end of issuing
      the three-byte SDP command sequence and before writing the first byte of data to the array. Refer to Figure 6 which illustrates
      the t
      WPH2
      requirement.
      (9) For faster t
      WC
      and t
      BLC
      , refer to X28HC256 or X28VC256.
      ADDRESS
      tAS
      tWC
      tAH
      tOES
      tDV
      tDS
      tDH
      tOEH
      CE
      WE
      OE
      DATA IN
      DATA OUT
      HIGH Z
      DATA VALID
      tCS
      tCH
      tWP
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