Microchip AT27C512R-70PU OTP EPROM 512Kbit 64K x 8bit DIP-28

The Microchip AT27C512R-70PU OTP EPROM is a 512Kbit One-Time Programmable Read-Only Memory organised as 64K x 8 bits, suited to embedded firmware storage.

Overview

This device provides 524,288 bits of one-time programmable memory with a single 5V supply (±10%) in normal read mode. With a fast read access time of 45ns, it removes the need for speed-reducing WAIT states in high-performance microprocessor designs. It uses advanced scaled CMOS technology, offering high speed, lower active power consumption and significantly faster programming compared with traditional EPROMs.

Key Features

• 45ns fast read access time
• Low-power CMOS operation, with typically 8mA active current and less than 10µA standby current
• 5V ±10% supply voltage
• High-reliability CMOS technology
• 2000V ESD protection and 200mA latchup immunity
• 100µs/byte typical rapid programming algorithm
• CMOS- and TTL-compatible inputs and outputs
• Integrated product identification code

Applications

Providing 64K bytes of storage, the device allows firmware to be stored reliably and accessed without the delays of mass storage media. It is well suited to embedded firmware storage in industrial and automotive systems, as well as battery-powered or power-sensitive applications. The rapid programming algorithm reduces programming time while supporting reliable, repeatable programming.

Package and Operation

Supplied in a standard DIP-28 package with through-hole mounting, the AT27C512R-70PU is suitable for prototyping and industrial applications requiring robust, removable memory components. It operates across an industrial temperature range of -40°C to 85°C and is supplied in tube packaging.