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M27C256B - 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM

Description

5 2 Device operation

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Features

  • a 2 line control function which accommodates the use of multiple memory connection. The two line control function allows:.
  • the lowest possible memory power dissipation,.
  • complete assurance that output bus contention will not occur. For the most efficient use of these two control lines, E should be decoded and used as the primary device selecting function, while G should be made a common connection to all devices in the array and connected to the READ line from the system control bus. T.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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M27C256B 256 Kbit (32Kb × 8) UV EPROM and OTP EPROM Feature summary ■ 5V ± 10% supply voltage in Read operation ■ Access time: 45ns ■ Low power consumption: – Active Current 30mA at 5MHz – Standby Current 100µA ■ Programming voltage: 12.75V ± 0.25V ■ Programming time: 100µs/Word ■ Electronic signature – Manufacturer Code: 20h – Device Code: 8Dh ■ ECOPACK® packages available 28 1 FDIP28W (F) 28 1 PDIP28 (B) PLCC32 (C) May 2006 Rev 2 1/24 www.st.com 1 Contents Contents M27C256B 1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Device operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1 Read mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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