AT27C512R
Absolute Maximum Ratings*
Block Diagram
Temperature Under Bias ................ -55°C to +125°C
Storage Temperature...................... -65°C to +150°C
Voltage on Any Pin with
(1)
Respect to Ground......................... -2.0V to +7.0V
Voltage on A9 with
Respect to Ground ......................-2.0V to +14.0V
(1)
V
Supply Voltage with
PP
(1)
Respect to Ground.......................-2.0V to +14.0V
*NOTICE: Stresses beyond those listed under “Absolute Maxi-
mum 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 indi-
cated in the operational sections of this specification is not
implied. Exposure to absolute maximum rating conditions
for extended periods may affect device reliability.
Note: 1. Minimum voltage is -0.6V dc which may undershoot
to -2.0V for pulses of less than 20 ns. Maximum out-
put pin voltage is VCC + 0.75V dc which may over-
shoot to +7.0V for pulses of less than 20 ns.
Operating Modes
CE
OE/V
Ai
Ai
X
Mode \ Pin
Read
Outputs
PP
V
V
V
D
OUT
IL
IL
IH
IL
(1)
Output Disable
Standby
V
IH
High Z
High Z
(1)
V
X
X
(2)
Rapid Program
V
V
V
Ai
D
IN
IL
PP
PP
(1)
PGM Inhibit
V
IH
X
High Z
(3)
A9 = V
H
(4)
Product Identification
V
IL
V
A0 = V or V
Identification Code
IL
IH
IL
A1 - A15 = V
IL
Notes: 1. X can be VIL or VIH.
4. Two identifier bytes may be selected. All Ai inputs are held
low (VIL), except A9 which is set to VH and A0 which is tog-
gled low (VIL) to select the Manufacturer’s Identification byte
and high (VIH) to select the Device Code byte.
2. Refer to Programming Characteristics.
3. VH = 12.0 ± 0.5V.
3-137
ATMEL [ ATMEL ]
