AT27C040-12 ATMEL Corporation, AT27C040-12 Datasheet - Page 3

• Manufacturer Part Number: AT27C040-12
• Description: 4-Megabit 512K x 8 OTP EPROM
• Manufacturer: ATMEL Corporation

Block Diagram
Operating Modes
Notes:
Absolute Maximum Ratings*
*NOTICE:
Mode/Pin
Read
Output Disable
Standby
Rapid Program
PGM Verify
PGM Inhibit
Product Identification
Temperature Under Bias ......................-55°C to +125°C
Storage Temperature............................-65°C to +150°C
Voltage on Any Pin with
Respect to Ground ..............................-2.0V to +7.0V
Voltage on A9 with
Respect to Ground ...........................-2.0V to +14.0V
V
Respect to Ground ............................-2.0V to +14.0V
PP
Supply Voltage with
1. X can be V
2. Refer to Programming Characteristics
3. V
4. Two identifier bytes may be selected. All Ai inputs are held low (V
low (V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the oper-
ational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods
may affect device reliability.
H
= 12.0
(2)
IL
) to select the Manufacturer’s Identificaton byte and high (V
IL
(4)
0.5V.
or V
IH
.
CE
V
V
V
V
V
X
X
IH
IH
IL
IL
IL
OE
V
V
V
V
V
V
X
IH
IH
IH
IL
IL
IL
(1)
(1)
(1)
A0 = V
A1 - A18 = V
A9 = V
Ai
Ai
Ai
Ai
X
X
X
IH
IL
H
or V
), except A9 which is set to V
IH
(3)
) to select the Device Code byte.
IL
IL
V
V
V
V
X
X
X
PP
PP
PP
PP
X
(1)
H
and A0 which is toggled
Identification Code
Outputs
High Z
High Z
High Z
D
D
D
OUT
OUT
IN
3