Datasheet

DON'T CARE
NOTE 1. BL = 8, RL = 20 (CL = 11 , AL = CL- 2 ), Preamble = 1t
CK
, t
RTP
= 6, t
RP
= 11
NOTE 2. Dout n = data-out from column n.
NOTE 3. DES commands are shown for ease of illustration; other commands may be valid at these times.
NOTE 4. The example assumes t
RAS
. MIN is satisfied at Precharge command time(T16) and that t
RC
. MIN is satisfied at the next Active command time(T27).
NOTE 5. CA Parity = Disable, CS to CA Latency = Disable, Read DBI = Disable.
T0 T1 T2 T3 T10 T13 T16 T19
T20
T21
TRANSITIONING DATA
Dout
n
Dout
n+1
Dout
n+2
AL = CL - 2 = 9
CK#
CK
DQ
CMD
T22
READDES DES DES DES DES PRE DES DES DES DES
DES
Bank a
Col n
ADDR
DES
T23 T24
DES
DES
T25 T26
Dout
n+3
t
RTP
t
RP
ACT
T27
Dout
n
Dout
n+1
Dout
n+2
DQ
Dout
n+7
Dout
n+3
Dout
n+4
Dout
n+5
Dout
n+6
DQS, DQS#
DQS, DQS#
Bank a
Row b
BC4 Operation:
BC8 Operation:
Bank a
(or all)
CL = 11
Figure 113. READ to PRECHARGE with Additive Latency and 1t
CK
Preamble
DON'T CARE
NOTE 1. BL = 8, RL = 11 (CL = 11 , AL = 0 ), Preamble = 1t
CK
, t
RTP
= 6, t
RP
= 11
NOTE 2. Dout n = data-out from column n.
NOTE 3. DES commands are shown for ease of illustration; other commands may be valid at these times.
NOTE 4. t
RTP
= 6 setting activated by MR0[A11:9 = 001]
NOTE 5. The example assumes t
RC
. MIN is satisfied at the next Active command time(T18).
NOTE 6. CA Parity = Disable, CS to CA Latency = Disable, Read DBI = Disable.
T0 T1 T2 T3 T7 T10 T11 T12
T13
T14
TRANSITIONING DATA
Dout
n
Dout
n+1
Dout
n+2
RL = AL + CL
CK#
CK
DQ
CMD
T15
RDADES DES DES DES DES DES DES DES DES DES
DES
Bank a
Col n
ADDR
DES
T16 T17
ACT
DES
T18 T19
Dout
n+3
t
RTP
t
RP
DES
T20
Dout
n
Dout
n+1
Dout
n+2
DQ
Dout
n+7
Dout
n+3
Dout
n+4
Dout
n+5
Dout
n+6
DQS, DQS#
DQS, DQS#
Bank a
Row b
BC4 Operation:
BC8 Operation:
Figure 114. READ with Auto Precharge and 1t
CK
Preamble
AS4C256M16D4
Confidential
- 106 of 201 -
Rev.1.0 Aug.2019