1GB-DDR3L-AS4C128M8D3L Datasheet, PDF (74/88 Pages) Alliance Semiconductor Corporation – internal banks for concurrent operation

1Gb DDR3L – AS4C128M8D3L
Figure 46. WRITE(BC8) to WRITE(BC8)
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
T13
T14
CK#
CK
Notes 3
COMMAND
WRITE
NOP
NOP
NOP
tCCD
WRITE
NOP
NOP
NOP
NOP
NOP
NOP
NOP
4 Clocks
NOP
NOP
NOP
tWR
tWTR
Notes 4
ADDRESS
Bank
Col n
Bank
Col b
tWPRE
tWPST
DQS, DQS#
Notes 2
DQ
WL = 5
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
n
n+1
n+2
n+3
n+4
n+5
n+6
n+7
b
b+1
b+2
b+3
b+4
b+5
b+6
b+7
WL = 5
NOTES:
1. BL8, WL = 5 (CWL = 5, AL = 0)
2. DIN n (or b) = data-in 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 WRITE command at T0 and T4.
5. The write recovery time (tWR) and write timing parameter (tWTR) are referenced from the first rising clock edge after the last write data shown at T13.
TRANSITIONING DATA
Don't Care
Figure 47. WRITE(BC4) to WRITE(BC4) OTF
T0
T1
T2
T3
T4
T5
T6
T7
CK#
CK
Notes 3
COMMAND
WRITE
NOP
NOP
NOP
tCCD
WRITE
NOP
NOP
NOP
Notes 4
ADDRESS
Bank
Col n
DQS, DQS#
Bank
Col b
tWPRE
tWPST
T8
T9
NOP
NOP
tWPRE
T10
T11
NOP
NOP
4 Clocks
tWPST
T12
T13
T14
NOP
NOP
NOP
tWR
tWTR
Notes 2
DQ
WL = 5
Din
Din
Din
Din
n
n+1
n+2
n+3
WL = 5
Din
Din
Din
Din
b
b+1
b+2
b+3
NOTES:
1. BC4, WL = 5 (CWL = 5, AL = 0)
2. DIN n (or b) = data-in 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 MR0[A1:0 = 01] and A12 = 0 during WRITE command at T0 and T4.
5. The write recovery time (tWR) and write timing parameter (tWTR) are referenced from the first rising clock edge at T13 (4 clocks from T9).
TRANSITIONING DATA
Don't Care
Figure 48. WRITE(BC8) to READ(BC4,BC8) OTF
T0
T1
T2
T3
T4
T5
T6
T7
CK#
T8
T9
CK
Notes 3
COMMAND
WRITE
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
Notes 4
ADDRESS
DQS, DQS#
Notes 2
DQ
Bank
Col n
tWPRE
tWPST
WL = 5
Din
Din
Din
Din
Din
Din
Din
Din
n
n+1
n+2
n+3
n+4
n+5
n+6
n+7
NOTES:
1. RL = 5 (CL = 5, AL = 0), WL = 5 (CWL = 5, AL = 0)
2. DIN n = data-in from column n; DOUT b = data-out from 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 WRITE command at T0.
READ command at T13 can be either BC4 or BL8 depending on MR0[A1:0] and A12 status at T13.
T10
T11
T12
T13
T14
NOP
NOP
tWTR
NOP
READ
NOP
Bank
Col b
RL = 5
TRANSITIONING DATA
Don't Care
Confidential
74
Rev. 2.0
Aug. /2014