AS4C256M16D3
Figure 41. WRITE Burst Operation WL = 5 (AL = 0, CWL = 5, BL8)
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
CK#
CK
Notes 3
WRITE
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
COMMAND
WL = AL + CWL
Notes 4
Bank,
Col n
ADDRESS
tWPST
tWPRE
DQS, DQS#
Notes 2
Din
n
Din
n+1
Din
n+2
Din
n+3
Din
n+4
Din
n+5
Din
n+6
Din
n+7
DQ
NOTES:
1. BL8, WL = 5; AL = 0, CWL = 5.
2. DIN n = data-in from column n.
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.
TRANSITIONING DATA
Don't Care
Figure 42. WRITE Burst Operation WL = 9 (AL = CL-1, CWL = 5, BL8)
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
CK#
CK
Notes 3
WRITE
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
COMMAND
Notes 4
Bank,
Col n
ADDRESS
tWPRE
DQS, DQS#
Notes 2
Din
n
Din
n+1
Din
n+2
Din
n+3
DQ
AL = 4
CWL = 5
WL = AL + CWL
NOTES:
1. BL8, WL = 9; AL = (CL - 1), CL = 5, CWL = 5.
2. DIN n = data-in from column n.
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.
TRANSITIONING DATA
Don't Care
Confidential
67
Rev. 3.0
Aug. /2014
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
