MICROCHIP AT27C2048-90JU-T

The Atmel AT27C2048 is a low-power, high-performance 2,097,152-bit, one-time programmable, read-only memory (OTP EPROM) organized as 128K by 16 bits. It requires a single 5V power supply in normal read mode operation. Any word can be accessed in less than 55 ns, eliminating the need for speed-reducing WAIT states. The x16 organization makes this part ideal for high-performance, 16- and 32-bit microprocessor systems. In read mode, the AT27C2048 typically consumes 15mA. Standby mode supply current is typically less than 10µA. The AT27C2048 is available in an industry-standard, JEDEC-approved, one-time programmable (OTP) PLCC package. The device features two-line control (CE, OE) to eliminate bus contention in high-speed systems. With high-density, 128K word storage capability, the AT27C2048 allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media. The AT27C2048 has additional features that ensure high quality and efficient production use. The rapid programming algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 50 µs/word. 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.

• Fast read access time – 55ns
• Low-power CMOS operation – 100µ max standby – 35mA max active at 5MHz
• JEDEC standard packages – 44-lead PLCC
• Direct upgrade from 512Kbit and 1Mbit EPROMs
• 5V ± 10% supply
• High-reliability CMOS technology – 2,000V ESD protection – 200mA latchup immunity
• Rapid programming algorithm – 50µs/word (typical)
• CMOS- and TTL-compatible inputs and outputs
• Integrated product identification code
• Industrial temperature range