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intel~
2708
8K
(1
K x
8)
UV
ERASABLE
PROM
Max. Power Max. Access
2708
800mW 450ns
2708L
425mW
450ns
2708·1
800mW 350ns
2708·6
800mW
550ns
•
Low
Power Dissipation -
425
mW
•
Data Inputs and Outputs TTL
Max.
(270SL)
Compatible during both Read and
•
Fast Access Time - 350 ns Max.
Program Modes
(270S·1)
•
Three·State Outputs -
OR·
Tie
•
Static -
No
Clocks Required
Capability
The
Intel@
2708
is an 8192-bit ultraviolet light erasable and electrically reprogrammable
EPROM,
Ideally suited where
fast turnaround and pattern experimentation are Important requirements.
All data Inputs and outputs are TTL com-
patible during both the read and program modes.
The
outputs are three-state, allowing direct interface with common
system bus structures.
The
2708L at 425mW is available for systems requiring lower power dissipation than from the
2708.
A power dissipation
savings
of
over 50% without any sacrifice in speed is obtained with the 2708L. The 2708L has high input noise Immunity
and is specified at 10% power supply tolerance. A high-speed
2708-1
is
also available at 350ns for microprocessors
requiring fast access times.
The
2708 family is fabricated with the N-channel silicon gate FAMOS technology and is available in a 24-pln dual in-line
package.
PIN CONFIGURATION
A,
~e
A.
A.
As
A9
A.
~.
A,
CSNIE
A2
lobo
A,
PROGRAM
(UB)
Ao
071MSBI
ILSBIOo
00
0,
Os
02
0,
~
03
PIN
NAMES
Ao·Ag
ADDRESS
INPUTS
01..()a DATA OUTPUTS/INPUTS
C
/WE
CHIPSELECT/WRITE
ENABLE
INPUT
BLOCK DIAGRAM
ADDRESS
INPUTS
A.
A
s
-
A._
A,-
A._
~-
CHIP SELECT
lOGIC
v
DECODER
X
DECODER
DATA
OUTPUT
00-07
I
OUTPUT
BUFFERS
V GATING
64 X 128
ROM
ARRAY
PIN CONNECTION DURING READ
OR
PROGRAM
PIN
NUMBER
ADDRESS
DATA I/O INPUTS
9-11. 1-8.
V,.
PROGRAM
Voo
CStwE
MODE 13·17
22.23
12 18
19
20
READ
DOUT AIN
GND GND
+12
VIL
DESELECT
HIGH
IMPEDANCE
DON'TeARE
GND
GND
+12
V,H
PROGRAM
D,N
A'N
GND
PULSED
+12
VIHW
NY
t t
Va.
Vee
21
2'
-s
+5
-5
+s
-5
+s
INTEL
CORPORATION
ASSUMES
NO
RESPONSIBllITV
FOR
THE
USE
OF
~NV
CIRCUITRV
OTHER
THAN
CIRCUITRV
EMBODIED
IN
AN
INTEL
PRODUCT.
NO
OTHER
CIRCUIT
PATENT
LICENSES
ARE
IMPLIED.
@INTELCORPORATION
1980
January
1980
. 8-8
AFN-ol104A-ol