EPROM OTP 1M-Bit 64K x 16 70ns 44-Pin PLCC

The Microchip AT27C1024 is a low-power, high-performance 1,048,576-bit, one-time programmable, read-only memory (OTP EPROM) organized as 64K by 16 bits. It requires only one 5V power supply in normal read mode operation. Any word can be accessed in less than 45ns, 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 AT27C1024 typically consumes 15mA. Standby mode supply current is typically less than 10µA. The AT27C1024 is available in industry-standard, JEDEC-approved, one-time programmable (OTP) PDIP and PLCC packages. The device features two-line control (CE, OE) to eliminate bus contention in high-speed systems. With high-density, 64K word storage capability, the AT27C1024 allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media. The AT27C1024 has additional features to 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 100µs/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 – 45ns
• Low-power CMOS operation
  • 100µA max standby
  • 30mA max active at 5MHz
• JEDEC standard packages
  • 40-lead PDIP
  • 44-lead PLCC
• Direct upgrade from 512K (Atmel® AT27C516) EPROM
• 5V ± 10% power supply
• High-reliability CMOS technology
  • 2000V ESD protection
  • 200mA latchup immunity
• Rapid programming algorithm – 100µs/word (typical)
• CMOS- and TTL-compatible inputs and outputs
• Integrated product identification code
• Industrial and automotive temperature ranges
• Green (Pb/halide-free) packaging option