Description

The Atmel® AT27C256R is a low-power, high-performance, 262,144-bit, one-time programmable, read-only memory (OTP EPROM) organized as 32K by 8 bits. It requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 45ns, eliminating the need for speed reducing WAIT states on high-performance microprocessor systems.

Features

• Fast read access time – 45ns

• Low-power CMOS operation

– 100µA max standby

– 20mA max active at 5MHz

• JEDEC standard packages

– 28-lead PDIP

– 32-lead PLCC

• 5V ±10 supply

• High reliability CMOS technology

– 2,000V ESD protection

– 200mA latchup immunity

• Rapid programming 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