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首页＞ATMEL 爱特梅尔＞EPROM存储器＞AT27BV1024

ATMEL EPROM 存储器AT27BV1024

AT27BV1024 概述 The AT27BV1024 is a high-performance, low-power, low-voltage 1,048,576-bit onetime programmable read-only memory (OTP EPROM) organized as 64K by 16 bits. It requires only one supply in the range of 2.7V to 3.6V in normal read mode operation. The by-16 organization makes this part ideal for portable and handheld 16- and 32-bit microprocessor based systems using either regulated or unregulated battery power. Atmel’s innovative design techniques provide fast speeds that rival 5V parts while keeping the low power consumption of a 3V supply. At VCC = 2.7V, any word can be accessed in less than 120 ns. With a typical power dissipation of only 18 mW at 5 MHz and VCC = 3V, the AT27BV1024 consumes less than one fifth the power of a standard 5V EPROM.
Standby mode supply current is typically less than 1 μA at 3V. The AT27BV1024 simplifies system design and stretches battery lifetime even further by eliminating the need for power supply regulation. The AT27BV1024 is available in industry standard JEDEC-approved one-time programmable (OTP) plastic PLCC and VSOP packages. All devices feature two-line control (CE, OE) to give designers the flexibility to prevent bus contention.
The AT27BV1024 operating with VCC at 3.0V produces TTL level outputs that are compatible with standard TTL logic devices operating at VCC = 5.0V. At VCC = 2.7V, the part is compatible with JEDEC approved low voltage battery operation (LVBO) interface specifications. The device is also capable of standard 5-volt operation making it ideally suited for dual supply range systems or card products that are pluggable in both 3-volt and 5-volt hosts.
Atmel’s AT27BV1024 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/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. The AT27BV1024 programs exactly
the same way as a standard 5V AT27C1024 and uses the same programming equipment.

AT27BV1024 特性

• Fast Read Access Time – 90 ns
  • Dual Voltage Range Operation
  – Unregulated Battery Power Supply Range, 2.7V to 3.6V
  or Standard 5V ± 10% Supply Range
  • Pin Compatible with JEDEC Standard AT27C1024
  • Low Power CMOS Operation
  – 20 μA Max (Less than 1 μA Typical) Standby for VCC = 3.6V
  – 36 mW Max Active at 5 MHz for VCC = 3.6V
  • JEDEC Standard Surface Mount Packages
  – 44-lead PLCC
  – 40-lead VSOP
  • High Reliability CMOS Technology
  – 2,000V ESD Protection
  – 200 mA Latchup Immunity
  • Rapid Programming Algorithm – 100 μs/Word (Typical)
  • CMOS and TTL Compatible Inputs and Outputs
  – JEDEC Standard for LVTTL and LVBO
  • Integrated Product Identification Code
  • Industrial Temperature Range

AT27BV1024 订购型号