mt47h64m8b6-5e-it Micron Semiconductor Products, mt47h64m8b6-5e-it Datasheet - Page 93

• Manufacturer Part Number: mt47h64m8b6-5e-it
• Description: 512mb X4, X8, X16 Ddr2 Sdram
• Manufacturer: Micron Semiconductor Products

Figure 58:
PDF: 09005aef82f1e6e2/Source: 09005aef821aed36
DDR2_x4x8x16_Core2.fm - 512Mb DDR2: Rev. L; Core DDR2: Rev. C 4/08 EN
DQ8–DQ15 and UDQS collectively 6
DQ0–DQ7 and LDQS collectively 6
DQ (first data no longer valid) 4
DQ (first data no longer valid) 4
DQ (first data no longer valid) 7
DQ (first data no longer valid) 7
x16 Data Output Timing –
Notes:
DQ (last data valid) 4
DQ (last data valid) 4
DQ (last data valid) 7
DQ (last data valid) 7
UDQS, UDQS# 3
LDQS, LDSQ# 3
1.
2.
3. DQ transitioning after the DQS transitions define the
4. DQ0, DQ1, DQ2, DQ3, DQ4, DQ5, DQ6, or DQ7.
5.
6. The data valid window is derived for each DQS transition and is
7. DQ8, DQ9, DQ10, D11, DQ12, DQ13, DQ14, or DQ15.
DQ 4
DQ 4
DQ 4
DQ 4
DQ 4
DQ 4
DQ 7
DQ 7
DQ 7
DQ 7
DQ 7
DQ 7
t
t
transitions, and ends with the last valid transition of DQ.
lower byte, and UDQS defines the upper byte.
t
CK#
HP is the lesser of
DQSQ is derived at each DQS clock edge, is not cumulative over time, begins with DQS
QH is derived from
CK
T1
t HP 1
t
DQSQ,
t
t HP 1
CL or
t
HP:
t DQSQ 2
t QH 5
t DQSQ 2
t
t
t
T2
QH =
QH, and Data Valid Window
t QH 5
CH clock transitions collectively when a bank is active.
Data valid
window
93
T2
T2
T2
Data valid
t HP 1
window
t
T2
T2
T2
HP -
t DQSQ 2
t QHS
T2n
t QH 5
t DQSQ 2
t
t QHS
QHS.
t QH 5
Data valid
window
Micron Technology, Inc., reserves the right to change products or specifications without notice.
t HP 1
T2n
T2n
T2n
Data valid
window
T2n
T2n
T2n
T3
512Mb: x4, x8, x16 DDR2 SDRAM
t DQSQ 2
t QHS
t QH 5
t DQSQ 2
t QHS
t QH 5
t HP 1
Data valid
window
Data valid
window
T3
T3
T3
T3
T3n
t
T3
T3
DQSQ window. LDQS defines the
t DQSQ 2
t DQSQ 2
t QHS
t QHS
t HP 1
t QH 5
t QH 5
Data valid
window
Data valid
©2004 Micron Technology, Inc. All rights reserved.
window
T3n
T4
T3n
t
T3n
T3n
T3n
QH -
T3n
t
t QHS
DQSQ.
t QHS
Operations