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AT27C512R-45JI Datasheet(PDF) 3 Page - ATMEL Corporation

Part No. AT27C512R-45JI
Description  512K 64K x 8 OTP CMOS EPROM
Download  9 Pages
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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AT27C512R-45JI Datasheet(HTML) 3 Page - ATMEL Corporation

   
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3
0015O–EPROM–12/07
AT27C512R
3.
System Considerations
Switching between active and standby conditions via the Chip Enable pin may produce tran-
sient voltage excursions. Unless accommodated by the system design, these transients may
exceed datasheet limits, resulting in device non-conformance. At a minimum, a 0.1 µF high
frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This
capacitor should be connected between the V
CC and Ground terminals of the device, as close
to the device as possible. Additionally, to stabilize the supply voltage level on printed circuit
boards with large EPROM arrays, a 4.7 µF bulk electrolytic capacitor should be utilized, again
connected between the V
CC and Ground terminals. This capacitor should be positioned as
close as possible to the point where the power supply is connected to the array.
4.
Block Diagram
Note:
1. 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
CC + 0.75V DC which may overshoot to +7.0 volts for pulses of less than 20 ns.
5.
Absolute Maximum Ratings*
Temperature Under Bias............................... -55°C to + 125°C
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum 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.
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)
VPP Supply Voltage with
Respect to Ground ......................................-2.0V to + 14.0V(1)


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