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  • 參數(shù)資料
    型號(hào): UPD4564323G5-A70-9JH
    廠商: NEC Corp.
    英文描述: 64M-bit Synchronous DRAM 4-bank, LVTTL
    中文描述: 6400位同步DRAM 4銀行,LVTTL
    文件頁數(shù): 29/84頁
    文件大?。?/td> 1048K
    代理商: UPD4564323G5-A70-9JH
    Data Sheet M14376EJ2V0DS00
    29
    μ
    PD4564323 for Rev.
    E
    12. Burst Termination
    There are two methods to terminate a burst operation other than using a Read or a Write command. One is the
    burst stop command and the other is the precharge command.
    12.1 Burst Stop Command
    During a read cycle, when the burst stop command is issued, the burst read data are terminated and the data bus
    goes to Hi-Z after the /CAS latency from the burst stop command.
    Read
    Command
    CLK
    T0
    T2
    T1
    T3
    T4
    T5
    T6
    T7
    Burst length = X
    Q1
    Q2
    Q3
    DQ
    /CAS latency = 2
    Hi-Z
    Q1
    Q2
    Q3
    DQ
    /CAS latency = 3
    Hi-Z
    BST
    Remark
    BST: Burst stop command
    During a write cycle, when the burst stop command is issued, the burst write data are terminated and data bus goes
    to Hi-Z at the same clock with the burst stop command.
    D2
    D3
    D4
    Write
    DQ
    Command
    /CAS latency = 2, 3
    CLK
    T0
    T2
    T1
    T3
    T4
    T5
    T6
    T7
    Burst length = X
    BST
    Hi-Z
    D1
    Remark
    BST: Burst stop command
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