IS41C44002 ICSI [Integrated Circuit Solution Inc], IS41C44002 Datasheet - Page 3

• Manufacturer Part Number: IS41C44002
• Description: 4Mx4 bit Dynamic RAM with EDO Page Mode
• Manufacturer: ICSI [Integrated Circuit Solution Inc]

IC41C4400x and IC41LV4400x Series
Integrated Circuit Solution Inc.
DR007-0B 10/17/2002
FUNCTIONAL BLOCK DIAGRAM
TRUTH TABLE
Function
Standby
Read
Write: Word (Early Write)
Read-Write
EDO Page-Mode Read 1st Cycle:
EDO Page-Mode Write
EDO Page-Mode
Read-Write
Hidden Refresh
RAS-Only Refresh
CBR Refresh
Note:
1.
EARLY WRITE only.
A0-A10(A11)
CAS
RAS
OE
WE
2nd Cycle:
2nd Cycle:
2nd Cycle:
1st Cycle:
1st Cycle:
GENERATOR
REFRESH
COUNTER
CONTROL
ADDRESS
BUFFERS
Write
CLOCK
LOGIC
Read
CAS
RAS
(1)
L→H→L
L→H→L
RAS
RAS
H→L
RAS
RAS
RAS
H
L
L
L
L
L
L
L
L
L
L
CAS
H→L
H→L
H→L
H→L
H→L
H→L
CAS
CAS
CAS
CAS
CAS
H
H
L
L
L
L
L
L
CONTROL
LOGICS
WE
H→L
H→L
H→L
COLUMN DECODERS
WE
WE
WE
WE
WE
SENSE AMPLIFIERS
H
H
H
H
X
L
X
X
MEMORY ARRAY
L
L
L
DATA I/O BUS
4,194,304 x 4
L→H
L→H
L→H
OE
OE
OE
OE
OE
WE
X
X
X
X
X
X
X
L
L
L
L
Address t
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/COL
ROW/NA
NA/COL
NA/COL
NA/COL
CONTROL
LOGIC
X
X
OE
R
/t
C
I/O
High-Z
D
D
D
D
D
D
D
D
D
D
D
High-Z
High-Z
OUT
IN
OUT
OUT
OUT
IN
IN
OUT
OUT
OUT
OUT
, D
, D
, D
IN
IN
IN
I/O0-I/O3
3