MB81F641642D Fujitsu Microelectronics, MB81F641642D Datasheet - Page 4

• Manufacturer Part Number: MB81F641642D
• Description: 4 x 1M x 16-Bit SDRAM
• Manufacturer: Fujitsu Microelectronics

4
MB81F641642D-75/-102/-102L
BLOCK DIAGRAM
CLK
CKE
RAS
CAS
WE
A
A
A
A
DQMU
CS
DQ
0
10
12
13
DQ
to
to A
/AP
(BA1)
(BA0)
15
0
11
,
COMMAND
REGISTER
REGISTER
DECODER
ADDRESS
BUFFER/
I/O DATA
BUFFER/
BUFFER
CLOCK
Fig. 1 – MB81F641642D BLOCK DIAGRAM
To each block
REGISTER
CONTROL
ADDRESS
COUNTER
COLUMN
SIGNAL
LATCH
MODE
Preliminary (AE4.1E)
ROW
ADDR.
COL.
ADDR.
RAS
CAS
WE
(4,096
I/O
DRAM
CORE
256
BANK-0
BANK-1
16)
BANK-2
V
V
V
BANK-3
CC
CCQ
SS
/V
SSQ