AT27C256R70PC Atmel, AT27C256R70PC Datasheet - Page 3

• Manufacturer Part Number: AT27C256R70PC
• Manufacturer: Atmel

Specifications of AT27C256R70PC

• Density: 256Kb
• Organization: 32Kx8
• Interface Type: Parallel
• Bus Type: Parallel
• In System Programmable: External
• Access Time (max): 70ns
• Package Type: PDIP
• Reprogramming Technique: OTP
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 20mA
• Pin Count: 28
• Mounting: Through Hole
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Not Compliant

Absolute Maximum Ratings*
Note:
Operating Modes
Notes:
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
Mode\Pin
Read
Output Disable
Standby
Rapid Program
PGM Verify
Optional PGM Verify
PGM Inhibit
Product Identification
PP
Supply Voltage with
1.
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
(V
(2)
(2)
Minimum voltage is -0.6V dc which may undershoot to -2.0V for pulses of less than 20 ns.Maximum output pin voltage is
V
H
IL
CC
= 12.0
) to select the Manufacturer’s Identification byte and high (V
(2)
+ 0.75V dc which may overshoot to +7.0 volts for pulses of less than 20 ns.
(2)
(4)
IL
0.5V.
or V
IH
.
CE
V
V
V
V
V
V
V
X
IH
IH
IL
IL
IL
IL
IL
(1)
OE
V
V
V
V
V
V
V
X
IH
IH
IH
(1)
(1)
(1)
IL
IL
IL
IL
(1)
*NOTICE:
A0 = V
A1 - A14 = V
IH
IL
A9 = V
) to select the Device Code byte.
), except A9 which is set to V
X
Ai
Ai
Ai
Ai
Ai
X
X
IH
(1)
Stresses beyond those listed under “Absolute Maxi-
mum Ratings” may cause permanent damage to
the device. This is a stress rating only and func-
tional operation of the device at these or any other
conditions beyond those indicated in the opera-
tional sections of this specification is not implied.
Exposure to absolute maximum rating conditions
for extended periods may affect device reliability.
(1)
(1)
or V
H
(3)
IL
IL
V
V
V
V
V
V
V
V
V
PP
CC
CC
CC
PP
PP
CC
PP
CC
H
and A0 which is toggled low
Outputs
D
High Z
High Z
D
D
D
High Z
Identification Code
OUT
IN
OUT
OUT
3