AT27C516-45VU Atmel, AT27C516-45VU Datasheet - Page 2

• Manufacturer Part Number: AT27C516-45VU
• Manufacturer: Atmel

Specifications of AT27C516-45VU

• Organization: 32Kx16
• Interface Type: Parallel
• In System Programmable: External
• Access Time (max): 45ns
• Package Type: VSOP
• Reprogramming Technique: OTP
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 30mA
• Pin Count: 40
• Mounting: Surface Mount
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Compliant

The AT27C516 is available in industry standard JEDEC-
approved one-time programmable (OTP) plastic PLCC and
VSOP 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 Rapid™ Program-
ming Algorithm reduces the time required to program the
part and guarantees reliable programming. Programming
time is typically only 50 s/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 programming
algorithms and voltages.
Block Diagram
2
AT27C516
System Considerations
Switching between active and standby conditions via the
Chip Enable pin may produce transient voltage excursions.
Unless accommodated by the system design, these tran-
sients may exceed data sheet limits, resulting in device
non-conformance. At a minimum, a 0.1 F high frequency,
low inherent inductance, ceramic capacitor should be uti-
lized for each device. This capacitor should be connected
between the V
close to the device as possible. Additionally, to stabilize the
supply voltage level on printed circuit boards with large
EPROM arrays, a 4.7 F bulk electrolytic capacitor should
be utilized, again connected between the V
terminals. This capacitor should be positioned as close as
possible to the point where the power supply is connected
to the array.
CC
and Ground terminals of the device, as
CC
and Ground