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AT27C520 Datasheet(PDF) 3 Page - ATMEL Corporation

Part No. AT27C520
Description  512K 64K x 8 Multiplexed Addresses/ Outputs OTP EPROM
Download  10 Pages
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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AT27C520 Datasheet(HTML) 3 Page - ATMEL Corporation

 
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AT27C520
3
Absolute Maximum Ratings*
Temperature Under Bias ................................ -55°C to +125°C
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age 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
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 under-
shoot to -2.0V for pulses of less than 20 ns. Max-
imum output pin voltage is VCC + 0.75V DC
which may overshoot to +7.0V for pulses of less
than 20 ns.
Storage Temperature ..................................... -65°C to +150°C
Voltage on Any Pin with
Respect to Ground .........................................-2.0V to +7.0V(1)
Voltage on A9 with
Respect to Ground ......................................-2.0V to +14.0V(1)
V
PP Supply Voltage with
Respect to Ground .......................................-2.0V to +14.0V(1)
Operating Modes
Notes:
1. X can be VIL or VIH.
2. Refer to Programming Characteristics.
3. VH = 12.0 ± 0.5V.
4. Two identifier bytes may be selected. All A8 - A15 inputs are held low (VIL), except A9 which is set to VH and A8 which is
toggled low (VIL) to select the Manufacturer’s Identification byte and high (VIH) to select the Device Code byte.
Mode/Pin
ALE
OE/V
PP
A8 - A15
AD0 - AD7
Read
V
IL
V
IL
Ai
D
OUT
Output Disable
V
IL/VIH
V
IH
X
(1)
High Z/A0 - A7
Address Latch Enable
V
IH
V
IH
XA0 - A7
Rapid Program
(2)
V
IH
V
PP
Ai
D
IN
Product Identification
(3)
VIL
VIL
A9 = V
H
(4)
A8 = VIH or VIL
A10 - A15 = V
IL
Identification Code


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