MOSEL VITELIC
Absolute Maximum Ratings*
Ambient Temperature
Under Bias .............................. –10
°
C to +80
°
C
Storage Temperature (plastic) ...... -55
°
C to +125
°
C
Voltage Relative to V
SS
...................–1.0V to +7.0V
Data Output Current ..................................... 50 mA
Power Dissipation .......................................... 1.0 W
*
Note:
Operation above Absolute Maximum Ratings can
adversely affect device reliability.
V53C8256H
Capacitance*
Symbol
C
IN1
C
IN2
C
OUT
T
A
= 25
°
C, V
DD
= 5 V
±
10%, V
SS
= 0 V
Parameter
Address Input
RAS, CAS, WE, OE
Data Input/Output
Min.
3
4
5
Max.
4
5
7
Unit
pF
pF
pF
*Note:
Capacitance is sampled and not 100% tested.
Block Diagram
256K x 8
OE
WE
CAS
RAS
RAS CLOCK
GENERATOR
CAS CLOCK
GENERATOR
WE CLOCK
GENERATOR
OE CLOCK
GENERATOR
VDD
VSS
DATA I/O BUS
COLUMN DECODERS
Y0 -Y8
I/O 1
I/O 2
I/O 3
SENSE AMPLIFIERS
512 x 8
I/O
BUFFER
I/O 4
I/O 5
I/O 6
I/O 7
I/O 8
REFRESH
COUNTER
9
A0
A1
ADDRESS BUFFERS
AND PREDECODERS
X 0 -X8
ROW
DECODERS
512
•
•
•
A
7
A8
MEMORY
ARRAY
8256H-05
V53C8256H Rev. 1.2 July 1997
3
MOSEL [ MOSEL VITELIC, CORP ]
