IC41C4400x Datasheet, PDF (3/20 Pages) Integrated Circuit Solution Inc – 4Mx4 bit Dynamic RAM with EDO Page Mode

IC41C4400x and IC41LV4400x Series
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-A10(A11)
ADDRESS
BUFFERS
MEMORY ARRAY
4,194,304 x 4
I/O0-I/O3
TRUTH TABLE
Function
Standby
Read
Write: Word (Early Write)
Read-Write
EDO Page-Mode Read 1st Cycle:
2nd Cycle:
EDO Page-Mode Write 1st Cycle:
2nd Cycle:
EDO Page-Mode
Read-Write
1st Cycle:
2nd Cycle:
Hidden Refresh
RAS-Only Refresh
Read
Write⁽¹⁾
CBR Refresh
Note:
1. EARLY WRITE only.
RAS
H
L
L
L
L
L
L
L
L
L
L→H→L
L→H→L
L
H→L
CAS
H
L
L
L
H→L
H→L
H→L
H→L
H→L
H→L
L
L
H
L
WE
X
H
L
H→L
H
H
L
L
H→L
H→L
H
L
X
X
OE
X
L
X
L→H
L
L
X
X
L→H
L→H
L
X
X
X
Address tR/tC
X
ROW/COL
ROW/COL
ROW/COL
ROW/COL
NA/COL
ROW/COL
NA/COL
ROW/COL
NA/COL
ROW/COL
ROW/COL
ROW/NA
X
I/O
High-Z
DOUT
DIN
DOUT, DIN
DOUT
DOUT
DIN
DIN
DOUT, DIN
DOUT, DIN
DOUT
DOUT
High-Z
High-Z
Integrated Circuit Solution Inc.
3
DR007-0B 10/17/2002