參數(shù)資料
型號(hào): MT46V64M4FG-75Z
元件分類: DRAM
英文描述: 64M X 4 DDR DRAM, 0.75 ns, PBGA60
封裝: 8 X 14 MM, PLASTIC, FBGA-60
文件頁數(shù): 66/83頁
文件大?。?/td> 2343K
代理商: MT46V64M4FG-75Z
256Mb: x4, x8, x16
DDR SDRAM
09005aef8076894f
Micron Technology, Inc., reserves the right to change products or specifications without notice.
256MBDDRx4x8x16_2.fm - Rev. K 9/04 EN
69
2003 Micron Technology, Inc. All rights reserved.
Figure 41: x16 Data Output Timing – tDQSQ, tQH, and Data Valid Window
NOTE:
1. DQ transitioning after DQS transition define tDQSQ window. LDQS defines the lower byte and UDQS defines the upper
byte.
2. DQ0, DQ1, DQ2, DQ3, DQ4, DQ5, DQ6, or DQ7.
3. tDQSQ is derived at each DQS clock edge and is not cumulative over time and begins with DQS transition and ends with
the last valid DQ transition.
4. tQH is derived from tHP: tQH = tHP - tQHS.
5. tHP is the lesser of tCL or tCH clock transition collectively when a bank is active.
6. The data valid window is derived for each DQS transition and is tQH minus tDQSQ.
7. DQ8, DQ9, DQ10, D11, DQ12, DQ13, DQ14, or DQ15.
DQ (Last data valid)2
DQ2
LDQS1
DQ (Last data valid)2
DQ (First data no longer valid)2
DQ0 - DQ7 and LDQS, collectively6
T2
T2n
T3
T3n
CK
CK#
T1
T2
T3
T4
T2n
T3n
tQH4
tDQSQ3
Data Valid
window
Data Valid
window
DQ (Last data valid)7
DQ7
UDQS1
DQ (Last data valid)7
DQ (First data no longer valid)7
DQ8 - DQ15 and UDQS, collectively6
T2
T2n
T3
T3n
tQH4
tDQSQ3
tHP5
tQH4
Data Valid
window
Data Valid
window
Data Valid
window
Data Valid
window
Data Valid
window
Upper
Byte
Lower
Byte
Data Valid
window
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