W9816G6JH Datasheet, PDF (35/42 Pages) Winbond – 512K X 2 BANKS X 16 BITS SDRAM

11.15 Auto-precharge Timing (Read Cycle)
W9816G6JH
(1) C AS Latency=2
( a ) b u rst len g th = 1
Com m and
DQ
( b ) b u rs t le n g t h = 2
Com m and
DQ
( c ) b u rst len g th = 4
Com m and
DQ
( d ) b u rs t le n g t h = 8
Com m and
DQ
0
R ead
R ead
R ead
R ead
(2) C AS Latency=3
( a ) b u rst len g th = 1
Com m and
R ead
DQ
( b ) b u rs t le n g t h = 2
Com m and
R ead
DQ
( c ) b u rst len g th = 4
Com m and
R ead
DQ
( d ) b u rs t le n g t h = 8
Com m and
R ead
DQ
1
AP
AP
2
3
4
5
6
7
8
Act
tR P
Q0
AP
Act
tR P
Q0
Q1
AP
Act
tR P
Q0
Q1
Q2
Q3
AP
Q0
Q1
Q2
Q3
Q4
Q5
Q6
tR P
Q0
Act
AP
Act
tR P
Q0
Q1
AP
Act
tR P
Q0
Q1
Q2
Q3
AP
Q0
Q1
Q2
Q3
Q4
Q5
9
10
11
Act
tR P
Q7
tR P
Q6
Q7
Act
N o te :
R ead
re p re s e n ts th e R e a d w ith A u to p re c h a rg e c o m m a n d .
AP
A ct
re p re s e n ts th e s ta rt o f in te rn a l p re c h a rg in g .
represe nts the B a nk A ctivate com m and .
W h e n th e A u to p re ch a rg e c o m m a n d is a s s e rte d , th e p e rio d fro m B a n k A c tiv a te c o m m a n d to
t h e s t a rt o f i n t e rn a l p re c g a rg i n g m u s t b e a t l e a s t Rt A S (m in ).
- 35 -
Publication Release Date: Jun. 24, 2014
Revision: A01