AS4C512M8D3LA-12BCN Datasheet, PDF (64/83 Pages) Alliance Semiconductor Corporation – Fully synchronous operation

AS4C512M8D3LA-12BCN
Figure 35. READ (BL4) to READ (BL8) OTF
T0
T1
T2
T3
T4
T5
T6
CK#
CK
Notes 3
COMMAND
READ
NOP
NOP
NOP
READ
NOP
NOP
Notes 4
ADDRESS
Bank,
Col n
tCCD
Bank,
Col b
tRPRE
DQS, DQS#
T7
NOP
tRPST
Notes 2
DQ
RL = 5
Dout
n
Dout
n+1
Dout
n+2
Dout
n+3
RL = 5
NOTES:
1. 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 MR0[A1:0 = 01] and A12 = 0 during READ command at T0.
BL8 setting activated by MR0[A1:0 = 01] and A12 = 1 during READ command at T4.
T8
T9
T10
T11
T12
T13
T14
NOP
NOP
NOP
NOP
NOP
NOP
NOP
tRPRE
tRPST
Dout
b
Dout
b+1
Dout
b+2
Dout
b+3
Dout
b+4
Dout
b+5
Dout
b+6
Dout
b+7
TRANSITIONING DATA
Don't Care
Figure 36. READ (BC4) to WRITE (BL8) OTF
T0
T1
T2
T3
T4
T5
T6
T7
CK#
CK
Notes 3
COMMAND
READ
NOP
NOP
NOP
WRITE
NOP
NOP
NOP
Notes 4
ADDRESS
DQS, DQS#
Notes 2
DQ
READ to WRITE Command Delay = RL + tCCD/2 + 2tCK - WL
Bank,
Col n
Bank,
Col b
tRPRE
tRPST
RL = 5
Dout
n
Dout
n+1
Dout
n+2
Dout
n+3
WL = 5
T8
T9
T10
T11
T12
T13
NOP
NOP
tWPRE
NOP
NOP
4 clocks
NOP
NOP
tWPST
Din
Din
Din
Din
Din
Din
Din
Din
b
b+1
b+2
b+3
b+4
b+5
b+6
b+7
T14
T15
NOP
NOP
tWR
tWTR
NOTES:
1. BC4, RL = 5 (CL = 5, AL = 0), WL = 5 (CWL = 5, AL = 0)
2. DOUT n = data-out from column, DIN b = data-in from 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 READ command at T0 and WRITE command at T4.
TRANSITIONING DATA
Don't Care
Figure 37. READ (BL8) to WRITE (BL4) OTF
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
CK#
CK
Notes 3
COMMAND
READ
NOP
NOP
NOP
NOP
NOP
WRITE
NOP
NOP
NOP
Notes 4
ADDRESS
DQS, DQS#
Notes 2
DQ
READ to WRITE Command Delay = RL + tCCD + 2tCK - WL
Bank,
Col n
tRPRE
Bank,
Col b
tRPST
RL = 5
Dout
n
Dout
n+1
Dout
n+2
Dout
n+3
Dout
n+4
Dout
n+5
Dout
n+6
Dout
n+7
WL = 5
NOTES:
1. RL = 5 (CL = 5, AL = 0), WL = 5 (CWL= 5, AL = 0)
2. DOUT n = data-out from column, DIN b = data-in 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 MR0[A1:0 = 01] and A12 = 1 during READ command at T0.
BC4 setting activated by MR0[A1:0 = 01] and A12 = 0 during WRITE command at T6.
T10
T11
T12
T13
T14
T15
NOP
NOP
NOP
NOP
NOP
NOP
tWR
4 clocks
tWTR
tWPRE
tWPST
Din
Din
Din
Din
b
b+1
b+2
b+3
TRANSITIONING DATA
Don't Care
Confidential
-6483-
Rev. 1.0 May 2016