MICROCHIP AT27C256R OTP EPROM, 256Kbit, 32K x 8, 45ns, DIP-28

The MICROCHIP AT27C256R-45PU is a high-performance, low-power, one-time programmable read-only memory (OTP EPROM) integrated circuit. Organised as 32K by 8-bit, it provides 256 kilobits of non-volatile storage, ideal for reliably storing firmware and system code that requires fast, direct access without the latency of traditional mass storage media.

Operating on a single 5V ±10% power supply, this device excels in high-performance microprocessor systems. Its fast 45ns read access time allows any byte to be accessed rapidly, eliminating the need for speed-reducing wait states and ensuring efficient system operation. The scaled CMOS technology underpinning the design delivers both low active power consumption and fast programming capabilities.

Key Features & Performance

• Ultra-Low Power Consumption: Designed for efficiency, it typically draws only 8mA in active mode and a maximum of 100µA in standby mode, conserving energy in a wide range of applications.
• Robust Design & Compatibility: Featuring CMOS and TTL-compatible inputs and outputs, it integrates seamlessly into various digital systems. Two-line control (CE, OE) offers designers flexibility to prevent bus contention.
• High Reliability: Built with high-reliability CMOS technology, it includes 2000V ESD protection for enhanced durability. A rapid programming algorithm guarantees reliable programming in approximately 100µs per byte, streamlining production.
• Wide Operating Range: Suited for demanding environments, it supports industrial and automotive temperature ranges from -40°C to +85°C. An integrated product identification code aids in system management and verification.

This through-hole mounted DIP-28 package device is a robust solution for embedded systems, industrial controls, automotive electronics, and any application requiring permanent, high-speed code storage. Please note: this is an ESD-sensitive device; **