AT27C080-10JC 查看數據表（PDF） - Atmel Corporation

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AT27C080-10JC

8-Megabit (1M x 8) UV erasable CMOS EPROM

Atmel Corporation 

Atmel’s scaled CMOS technology provides low active

power consumption and fast programming. Power con-

sumption is typically 10 mA in active mode and less than 10

µA in standby mode.

The AT27C080 is available in a choice of packages, includ-

ing; one-time programmable (OTP) plastic PLCC, PDIP,

SOIC (SOP), and TSOP. All devices feature two-line con-

trol (CE, OE) to give designers the flexibility to prevent bus

contention.

With high density 1M byte storage capability, the

AT27C080 allows firmware to be stored reliably and to be

accessed by the system without the delays of mass storage

media.

Atmel’s 27C080 has 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 µs/byte. 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.

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 µF high frequency,

low inherent inductance, ceramic capacitor should be uti-

lized 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 positioned as close as

possible to the point where the power supply is connected

to the array.

Block Diagram

2

AT27C080

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