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AT27C516 Datasheet(PDF) 2 Page - ATMEL Corporation

Part No. AT27C516
Description  512K 32K x 16 OTP CMOS EPROM
Download  8 Pages
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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AT27C516 Datasheet(HTML) 2 Page - ATMEL Corporation

   
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In read mode, the AT27C516 typically consumes 15 mA.
Standby mode supply current is typically less than 10
µA.
The AT27C516 is available in in du stry standard
JEDEC-approved one-time programmable (OTP) plastic
PLCC and TSOP packages. The device features two-line
control (CE, OE) to eliminate bus contention in high-speed
systems.
With 32K word storage capability, the AT27C516 allows
firmware to be stored reliably and to be accessed by the
system without the delays of mass storage media.
Atmel’s 27C516 have additional features to ensure high
quality and efficient production use. The RapidProgram-
ming Algorithm reduces the time required to program the
part and guarantees reliable programming. Programming
time is typically only 50
µs/word. The Integrated Product
Identification Code electronically identifies the device and
manufacturer. This feature is used by industry standard
programming equipment to select the proper program-
ming algorithms and voltages.
Description (Continued)
Switching between active and standby conditions via the
Chip Enable pin may produce transient voltage excur-
sions. Unless accommodated by the system design, these
transients may exceed data sheet limits, resulting in de-
vice non-conformance. At a minimum, a 0.1
µF high fre-
quency, low inherent inductance, ceramic capacitor
should be utilized for each device. This capacitor should
be connected between the VCC 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
VCC and Ground terminals. This capacitor should be posi-
tioned as close as possible to the point where the power
supply is connected to the array.
System Considerations
3-146
AT27C516


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