Block Diagram - Sharp HT-DV30H Service Manual

IC4 VHiiS42S164F6 : 16 Bit, SDRAM ( iS42S16400F ) ( 1/2 )

BLOCK DIAGRAM

CLK
CKE
CS
COMMAND
RAS
DECODER
&
CAS
CLOCK
WE
A10 GENERATOR
A11
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
ROW
BA0
ADDRESS
BA1
LATCH
12
ADDRESS LATCH
8
BURST COUNTER
ADDRESS BUFFER
MODE
CONTROLLER
REGISTER
12
12
COLUMN
COLUMN
Figure 8-3 BLOCK DIAGRAM OF IC
REFRESH
SELF
REFRESH
CONTROLLER
REFRESH
COUNTER
12
ROW
ADDRESS
BUFFER
BANK CONTROL LOGIC
8 – 2
HT-DV30H
DQM
DATA IN
BUFFER
16 16
DQ 0-15
V
DD
DATA OUT
GND/GNDQ
BUFFER
16 16
4096
4096
MEMORY CELL
4096
ARRAY
4096
BANK 0
SENSE AMP I/O GATE
256K
(x 16)
COLUMN DECODER
8
/V
DDQ