HY57V651620B
FUNCTIONAL BLOCK DIAGRAM
1 M b i t x 4 b a n k s x 1 6 I / O S y n c h r o n o u s D R A M
Self refresh logic
& timer
Internal Row
counter
1Mx16 Bank 3
1Mx16 Bank 2
CLK
CKE
CS
R o w
Pre
R o w a c t i v e
D e c o d e r s
1Mx16 Bank 1
1Mx16 Bank 0
DQ0
DQ1
RAS
CAS
W E
M e m o r y
Cell
refresh
Array
C o l u m n
A c t i v e
C o l u m n
Pre
UDQM
L D Q M
D e c o d e r s
DQ14
DQ15
Y d e c o d e r s
C o l u m n A d d
C o u n t e r
B a n k S e l e c t
A0
A1
A d d r e s s
Registers
B u r s t
C o u n t e r
A11
BA0
BA1
C A S L a t e n c y
P i p e L i n e C o n t r o l
Mode Regist ers
D a t a O u t C o n t r o l
R e v . 1 . 9 / A p r . 0 1
3