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TMS27C256 - Programmable ROM

General Description

The TMS27C256 series are 32 768 by 8-bit (262 144-bit), ultraviolet (UV) light erasable, electrically programmable read-only memories (EPROMs).

The TMS27PC256 series are 32 768 by 8-bit (262 144-bit), one-time programmmable (OTP) electrically programmable read-only memories (PROMs).

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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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D Organization . . . 32768 by 8 Bits D Single 5-V Power Supply D Pin Compatible With Existing 256K MOS ROMs, PROMs, and EPROMs D All Inputs / Outputs Fully TTL Compatible D Max Access / Min Cycle Time VCC ± 10% ’27C/ PC256-10 100 ns ’27C/ PC256-12 120 ns ’27C/ PC256-15 150 ns ’27C/ PC256-17 170 ns ’27C/ PC256-20 200 ns ’27C/ PC256-25 250 ns D Power Saving CMOS Technology D Very High-Speed SNAP! Pulse Programming D 3-State Output Buffers D 400-mV Minimum DC Noise Immunity With Standard TTL Loads D Latchup Immunity of 250 mA on All Input and Output Lines D Low Power Dissipation ( VCC = 5.5 V ) – Active . . . 165 mW Worst Case – Standby . . . 1.