Figure 78: Data Output Timing – tDQSQ and Data Valid Window
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
CK#
CK
Command1
Address2
READ
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
RL = AL + CL
Bank,
Col n
tDQSQ (MAX)
tRPST
tDQSQ (MAX)
tLZDQ (MIN)
tHZDQ (MAX)
DQS, DQS#
tRPRE
tQH
DO
tQH
DO
DQ3 (last data valid)
DO
n + 1
DO
DO
DO
n + 5
DO
DO
n + 7
n + 2
n + 3
n + 4
n + 6
n
DQ3 (first data no longer valid)
DO
DO
DO
DO
DO
DO
DO
DO
n
n + 1
n + 2
n + 3
n + 4
n + 5
n + 6
n + 7
DO
DO
DO
DO
DO
DO
DO
DO
n + 7
All DQ collectively
n
n + 1
n + 2
n + 3
n + 4
n + 5
n + 6
Data valid
Data valid
Don’t Care
1. NOP commands are shown for ease of illustration; other commands may be valid at these times.
Notes:
2. The BL8 setting is activated by either MR0[1, 0] = 0, 0 or MR0[0, 1] = 0, 1 and A12 = 1 during READ command at
T0.
3. DO n = data-out from column n.
4. BL8, RL = 5 (AL = 0, CL = 5).
5. Output timings are referenced to VDDQ/2 and DLL on and locked.
6. tDQSQ defines the skew between DQS, DQS# to data and does not define DQS, DQS# to CK.
7. Early data transitions may not always happen at the same DQ. Data transitions of a DQ can be early or late within
a burst.
MICRON [ MICRON TECHNOLOGY ]
