AS4C256M16D3
Figure 29. READ (BL8) to READ (BL8)
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
T13
T14
CK#
CK
Notes 3
READ
NOP
NOP
NOP
READ
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
COMMAND
Notes 4
tCCD
Bank,
Col n
Bank,
Col b
ADDRESS
tRPRE
tRPST
DQS, DQS#
Notes 2
Dout
n
Dout
n+1
Dout
n+2
Dout
n+3
Dout
n+4
Dout
n+5
Dout
n+6
Dout
n+7
Dout
b
Dout
b+1
Dout
b+2
Dout
b+3
Dout
b+4
Dout
b+5
Dout
b+6
Dout
b+7
DQ
RL = 5
RL = 5
NOTES:
TRANSITIONING DATA
Don't Care
1. BL8, RL = 5 (CL = 5, AL = 0)
2. DOUT n (or b) = data-out from column n (or column b).
3. NOP commands are shown for ease of illustration; other commands may be valid at these times.
4. BL8 setting activated by either MR0[A1:0 = 00] or MR0[A1:0 = 01] and A12 = 1 during READ commands at T0 and T4.
Figure 30. Nonconsecutive READ (BL8) to READ (BL8)
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
T13
T14
CK#
CK
Notes 3
READ
NOP
NOP
NOP
NOP
READ
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
COMMAND
tCCD = 5
Notes 4
Bank,
Col n
Bank,
Col b
ADDRESS
tRPRE
tRPST
Notes 5
DQS, DQS#
Notes 2
DO
n
DO
b
DQ
RL = 5
RL = 5
NOTES:
1. BL8, RL = 5 (CL = 5, AL = 0), tCCD=5
2. DOUT n (or b) = data-out from column n (or column b)
3. NOP commands are shown for ease of illustration; other commands may be valid at these times
TRANSITIONING DATA
Don't Care
4. BL8 setting activated by either MR0[A1:0 = 00] or MR0[A1:0 = 01] and A12 = 1 during READ commands at T0 and T4
5. DQS-DQS# is held logic low at T9
Figure 31. READ (BL4) to READ (BL4)
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
T13
T14
CK#
CK
Notes 3
READ
NOP
NOP
NOP
READ
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
COMMAND
tCCD
Notes 4
Bank,
Col n
Bank,
Col b
ADDRESS
tRPST
tRPST
tRPRE
tRPRE
DQS, DQS#
Notes 2
Dout
n
Dout
n+1
Dout
n+2
Dout
n+3
Dout
b
Dout
b+1
Dout
b+2
Dout
b+3
DQ
RL = 5
RL = 5
NOTES:
1. BC4, RL = 5 (CL = 5, AL = 0)
2. DOUT n (or b) = data-out from column n (or column b).
3. NOP commands are shown for ease of illustration; other commands may be valid at these times.
4. BC4 setting activated by either MR0[A1:0 = 10] or MR0[A1:0 = 01] and A12 = 0 during READ commands at T0 and T4.
TRANSITIONING DATA
Don't Care
Confidential
62
Rev. 3.0
Aug. /2014
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
