Datasheet > AT27C020

AT27C020

更新时间： 2023-12-06 20:08:57

品牌	Logo	应用领域
美国微芯 - MICROCHIP		可编程只读存储器电动程控只读存储器
页数	文件大小	规格书
14页	837K
描述
The Microchip AT27C020 is a low-power, high-performance, 2-megabit One Time Programmable EPROM or

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AT27C020 数据手册

Features

• Fast read access time – 55ns

• Low-power CMOS operation

– 100µA max standby

– 25mA max active at 5MHz

• JEDEC standard packages

– 32-lead PDIP

– 32-lead PLCC

• 5V 10% supply

• High-reliability CMOS technology

– 2,000V ESD protection

2Mb (256K x 8)

One-time

– 200mA latchup immunity

Programmable,

Read-only Memory

• Rapidprogramming algorithm – 100µs/byte (typical)

• CMOS- and TTL-compatible inputs and outputs

• Integrated product identification code

• Industrial and automotive temperature ranges

• Green (Pb/halide-free) packaging option

Atmel AT27C020

Description

The Atmel^®AT27C020 is a low-power, high-performance, 2,097,152-bit, one-time pro-

grammable, read-only memory (OTP EPROM) organized as 256K by 8 bits. It requires only

one 5V power supply in normal read mode operation. Any byte can be accessed in less than

55ns, eliminating the need for speed-reducing WAIT states on high-performance micropro-

cessor systems.

In read mode, the AT27C020 typically consumes 8mA. Standby mode supply current is

typically less than 10µA.

The AT27C020 is available in a choice of industry-standard, JEDEC approved, one-time pro-

grammable (OTP) PDIP and PLCC packages. All devices feature two-line control (CE, OE)

to give designers the flexibility to prevent bus contention.

With 256K byte storage capability, the AT27C020 allows firmware to be stored reliably and

to be accessed by the system without the delays of mass storage media.

The AT27C020 has additional features to ensure high quality and efficient production use.

The rapidprogramming algorithm reduces the time required to program the part and guar-

antees reliable programming. Programming time is typically only 100µs/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 pro-

gramming algorithms and voltages.

0570H–EPROM–4/11

12 3 4 5 6 7...14

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