IC41C4405x and IC41LV4405x Series
FUNCTIONAL BLOCK DIAGRAM
OE
WE
CAS
CONTROL
LOGIC
WE
CONTROL
LOGICS
OE
CONTROL
LOGIC
OE
CAS
CAS
WE
RAS
RAS
CLOCK
GENERATOR
DATA I/O BUS
REFRESH
COUNTER
DATA I/O BUFFERS
ROW DECODER
RAS
COLUMN DECODERS
SENSE AMPLIFIERS
I/O0-I/O3
MEMORY ARRAY
4,194,304 x 4
ADDRESS
BUFFERS
A0-A10(A11)
TRUTH TABLE
Function
Standby
Read
Write: Word (Early Write)
Read-Write
Hidden Refresh
RAS-Only
Refresh
CBR Refresh
Note:
1. EARLY WRITE only.
Read
Write
(1)
RAS
H
L
L
L
L→H→L
L→H→L
L
H→L
CAS
H
L
L
L
L
L
H
L
WE
X
H
L
H→L
H
L
X
X
OE
X
L
X
L→H
L
X
X
X
Address t
R
/t
C
X
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/NA
X
I/O
High-Z
D
OUT
D
IN
D
OUT
, D
IN
D
OUT
D
OUT
High-Z
High-Z
Integrated Circuit Solution Inc.
DR013-0B 10/17/2002
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