Copyright Cirrus Logic, Inc. 2011 (All Rights Reserved) DS506F2 EP7311 High-Performance, Low-Power S" />
  • 參數(shù)資料
    型號: EP7311-IR-90
    廠商: Cirrus Logic Inc
    文件頁數(shù): 10/42頁
    文件大小: 0K
    描述: IC ARM720T MCU 90MHZ 204-TFBGA
    標(biāo)準(zhǔn)包裝: 119
    系列: EP7
    核心處理器: ARM7
    芯體尺寸: 32-位
    速度: 90MHz
    連通性: 編解碼器,EBI/EMI,IrDA,鍵盤,多媒體編解碼器,SPI/Microwire1,UART/USART
    外圍設(shè)備: LCD,LED,MaverickKey,PWM
    輸入/輸出數(shù): 27
    程序存儲器類型: ROMless
    RAM 容量: 56K x 8
    電壓 - 電源 (Vcc/Vdd): 2.3 V ~ 2.7 V
    振蕩器型: 外部
    工作溫度: -40°C ~ 85°C
    封裝/外殼: 204-TFBGA
    包裝: 托盤
    其它名稱: 598-1229
    18
    Copyright Cirrus Logic, Inc. 2011
    (All Rights Reserved)
    DS506F2
    EP7311
    High-Performance, Low-Power System on Chip
    SDRAM Burst Read Cycle
    Note:
    1. Timings are shown with CAS latency = 2
    2. The SDCLK signal may be phase shifted relative to the rest of the SDRAM control and data signals due to uneven loading.
    Designers should take care to ensure that delays between SDRAM control and data signals are approximately equal.
    ADRAS
    ADCAS
    SDCLK
    SDCS
    SDRAS
    SDCAS
    SDQM
    [0:3]
    ADDR
    DATA
    SDMWE
    D1
    D4
    D3
    D2
    t
    ADv
    t
    ADv
    t
    CSd
    t
    CSa
    t
    CSa
    t
    CAa
    t
    RAd
    t
    CSd
    t
    CAd
    t
    RAa
    t
    DAh
    t
    DAs
    t
    DAh
    t
    DAs
    t
    DAh
    t
    DAs
    t
    DAh
    t
    DAs
    t
    RAnv
    Figure 4. SDRAM Burst Read Cycle Timing Measurement
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