IC41UV4105 Datasheet, PDF (3/17 Pages) Integrated Circuit Solution Inc – 1Mx4 bit Dynamic RAM with Fast Page Mode

IC41UV4105
FUNCTIONAL BLOCK DIAGRAM
OE
WE
CAS
CAS
CONTROL
LOGIC
CAS
WE
CONTROL
LOGICS
WE
OE
CONTROL
LOGIC
RAS
RAS
CLOCK
GENERATOR
REFRESH
COUNTER
DATA I/O BUS
COLUMN DECODERS
SENSE AMPLIFIERS
A0-A9
ADDRESS
BUFFERS
MEMORY ARRAY
1,048,576 x 4
I/O0-I/O3
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 tR/tC
X
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/NA
X
I/O
High-Z
DOUT
DIN
DOUT, DIN
DOUT
DOUT
High-Z
High-Z
Integrated Circuit Solution Inc.
3
DR020-0B 08/24/2001