AS4C128M8D3 Datasheet, PDF (63/85 Pages) Alliance Semiconductor Corporation – AS4C128M8D3

AS4C128M8D3
Figure 29. READ (BL8) to READ (BL8)
CK#
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
T13
CK
Notes 3
COMMAND ^READ
NOP
NOP
NOP
READ
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
Notes 4
ADDRESS
Bank,
Col n
tCCD
Bank,
Col b
tRPRE
tRPST
DQS, DQS#
Notes 2
DQ
RL = 5
Dout
n
Dout
n+1
Dout
n+2
Dout
n+3
RL = 5
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
T14
NOP
NOTES:
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.
TRANSITIONING DATA
Don't Care
Figure 30. Nonconsecutive READ (BL8) to READ (BL8)
T0
T1
T2
T3
T4
T5
T6
T7
T8
CK#
CK
Notes 3
COMMAND
READ
NOP
Notes 4
ADDRESS
Bank,
Col n
NOP
NOP
tCCD = 5
NOP
READ
Bank,
Col b
NOP
NOP
NOP
Notes 5
tRPRE
DQS, DQS#
Notes 2
DQ
RL = 5
DO
n
RL = 5
T9
T10
T11
NOP
NOP
NOP
DO
b
T12
T13
T14
NOP
NOP
NOP
tRPST
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
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
TRANSITIONING DATA
Don't Care
Figure 31. READ (BL4) to READ (BL4)
T0
T1
T2
T3
T4
T5
CK#
CK
Notes 3
COMMAND
READ
NOP
NOP
NOP
READ
NOP
Notes 4
ADDRESS
Bank,
Col n
tCCD
Bank,
Col b
tRPRE
DQS, DQS#
T6
T7
NOP
NOP
tRPST
DQ
Notes 2
RL = 5
Dout
n
Dout
n+1
Dout
n+2
Dout
n+3
RL = 5
T8
T9
T10
T11
NOP
NOP
NOP
NOP
tRPRE
tRPST
Dout
b
Dout
b+1
Dout
b+2
Dout
b+3
T12
T13
NOP
NOP
T14
NOP
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
63
Rev. 3.0
Aug. /2014