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Silicon Gate MOS
8308
8192 BIT STATIC MOS
READ
ONLY MEMORY
Organization
--1024
Words x 8 Bits
• Fast Access -
450
ns
• Directly Compatible with
8080
CPU
at
Maximl)m Processor Speed
• Two Chip Select Inputs for Easy
Memory Expansion
• Directly TTL Compatible -
All
Inputs
and
Outputs
• Three
State
Output
-
OR-Ti~
Capability
• ·Fully Decoded
• Standard Power Supplies
+12V
DC,
±5V
DC
The Intel® 8308
is
an 8,192
bit
static
MOS mask
prog~ammable
Read Only Memory organized as 1024
words
by
~-bi~s.
This
ROM
is
designed
for
8080
microcomputer
system applications
where
high performance, large
bit
storage, and simple inter-
facing are
important
design objectives.
The
inputs
and
outputs
are fully
TTL
compatible.
A pin for pin compatible electrically programmed erasable ROM,
the
Intel® 8708, is available
for
system
development
and
small
quantity
production use.
Two Chip Selects are provided - CS
1
which
is
negative
true,
and CS2/CS2 which may be programmed
either
negative
or
positive
true
at
the
mask level.
The
8308 read only
memory
is fabricated
with
N-channel silicon gate technology.
This
technology
provides
the
designer
with
high performance, easy-to-use MOS circuits.
PIN
CONFIGURATION
BLOCK
DIAGRAM
DATA
OUT
1
DATA
OUT
8
A7
Vee
A6
As
CS1--'
OUTPUT
A5
Ag
CS
2
/CS
2
.
-...
BUFFERS
A4
Va8
A3
CSl
811)2
BIT
ROM
MATRIX
A2
\bo
(1024 X 8)
A,
CS
2
/CS
2
Ao
Os
0,
07
02
06
03
05
Vss
04
Ao
A,
Ag
PIN
NAMES
AO-Ag
ADDR
ESS
INPUTS
o,-Os
DATA
OUTPUTS
CS,. CS2
CHIP SELECT INPUTS
5-55