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首页＞ATMEL 爱特梅尔＞EPROM存储器＞AT27C020

ATMEL EPROM 存储器AT27C020

AT27C020 概述 The AT27C020 is a low-power, high-performance, 2,097,152-bit, one-time programmable read-only memory (OTP EPROM) organized as 256K by 8 bits. It requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 55 ns, eliminating the need for speed-reducing WAIT states on highperformance microprocessor systems. In read mode, the AT27C020 typically consumes 8 mA. Standby mode supply current is typically less than 10 μA.
The AT27C020 is available in a choice of industry-standard JEDEC-approved onetime programmable (OTP) plastic PDIP, PLCC and TSOP packages. All devices feature two-line control (CE, OE) to give designers the flexibility to prevent bus contention. With 256K bytes storage capability, the AT27C020 allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media.
Atmel’s AT27C020 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 100 μs/byte. 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.

AT27C020 特性

• Fast Read Access Time – 55 ns
  • Low-power CMOS Operation
  – 100 μA Max Standby
  – 25 mA Max Active at 5 MHz
  • JEDEC Standard Packages
  – 32-lead PDIP
  – 32-lead PLCC
  – 32-lead TSOP
  • 5V ± 10% Supply
  • High-reliability CMOS Technology
  – 2,000V ESD Protection
  – 200 mA Latch-up Immunity
  • Rapid Programming Algorithm – 100 μs/Byte (Typical)
  • CMOS- and TTL-compatible Inputs and Outputs
  • Integrated Product Identification Code
  • Industrial and Automotive Temperature Ranges
  • Green (Pb/Halide-free) Packaging Option

AT27C020 订购型号