參數資料
型號: MT47H64M16HR-3IT
元件分類: DRAM
英文描述: 64M X 16 DDR DRAM, 0.4 ns, PBGA84
封裝: 8 X 12.50 MM, ROHS COMPLIANT, FBGA-84
文件頁數: 127/129頁
文件大小: 9252K
代理商: MT47H64M16HR-3IT
Figure 54: x4, x8 Data Output Timing – tDQSQ, tQH, and Data Valid Window
DQ (last data valid)
DQ4
DQS#
DQS3
DQ (last data valid)
DQ (first data no longer valid)
All DQs and DQS collectively6
Earliest signal transition
Latest signal transition
T2
T2n
T3
T3n
CK
CK#
T1
T2
T3
T4
T2n
T3n
tQH5
tHP1
tQH5
tQHS
tQH5
tHP1
tQH5
tDQSQ2
Data
valid
window
Data
valid
window
Data
valid
window
Data
valid
window
tQHS
Notes: 1. tHP is the lesser of tCL or tCH clock transitions collectively when a bank is active.
2. tDQSQ is derived at each DQS clock edge, is not cumulative over time, begins with DQS
transitions, and ends with the last valid transition of DQ.
3. DQ transitioning after the DQS transition defines the tDQSQ window. DQS transitions at
T2 and at T2n are “early DQS,” at T3 are “nominal DQS,” and at T3n are “l(fā)ate DQS.”
4. DQ0, DQ1, DQ2, DQ3 for x4 or DQ0–DQ7 for x8.
5. tQH is derived from tHP: tQH = tHP - tQHS.
6. The data valid window is derived for each DQS transition and is defined as tQH - tDQSQ.
1Gb: x4, x8, x16 1.55V DDR2 SDRAM
READ
PDF: 09005aef82b91d01
1GbDDR2_1_55V.PDF Rev. A 5/09 EN
97
Micron Technology, Inc. reserves the right to change products or specifications without notice.
2009 Micron Technology, Inc. All rights reserved.
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相關代理商/技術參數
參數描述
MT47H64M16HR-3L 制造商:MICRON 制造商全稱:Micron Technology 功能描述:DDR2 SDRAM