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AM27C020-150PC5 Datasheet(PDF) 1 Page - Advanced Micro Devices |
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AM27C020-150PC5 Datasheet(HTML) 1 Page - Advanced Micro Devices |
1 / 12 page FINAL Publication# 11507 Rev: H Amendment/0 Issue Date: May 1998 Am27C020 2 Megabit (256 K x 8-Bit) CMOS EPROM DISTINCTIVE CHARACTERISTICS s Fast access time — Speed options as fast as 55 ns s Low power consumption — 100 µA maximum CMOS standby current s JEDEC-approved pinout — Plug in upgrade of 1 Mbit EPROM — Easy upgrade from 28-pin JEDEC EPROMs s Single +5 V power supply s ±10% power supply tolerance standard s 100% Flashrite™ programming — Typical programming time of 32 seconds s Latch-up protected to 100 mA from –1 V to VCC + 1 V s High noise immunity s Compact 32-pin DIP, PDIP, and PLCC packages GENERAL DESCRIPTION The Am27C020 is a 2 Megabit, ultraviolet erasable pro- grammable read-only memory. It is organized as 256 Kwords by 8 bits per word, operates from a single +5 V supply, has a static standby mode, and features fast single address location programming. Products are available in windowed ceramic DIP packages, as well as plastic one time programmable (OTP) PDIP and PLCC packages. Data can be typically accessed in less than 55 ns, al- lowing high-performance microprocessors to operate without any WAIT states. The device offers separate Output Enable (OE#) and Chip Enable (CE#) controls, thus eliminating bus contention in a multiple bus micro- processor system. AMD’s CMOS process technology provides high speed, low power, and high noise immunity. Typical power consumption is only 100 mW in active mode, and 100 µW in standby mode. All signals are TTL levels, including programming sig- nals. Bit locations may be programmed singly, in blocks, or at random. The device supports AMD’s Flashrite programming algorithm (100 µs pulses), re- sulting in a typical programming time of 32 seconds. BLOCK DIAGRAM 11507H-1 A0–A17 Address Inputs PGM# CE# OE# VCC VSS VPP Data Outputs DQ0–DQ7 Output Buffers Y Gating 2,097,152 Bit Cell Matrix X Decoder Y Decoder Output Enable Chip Enable and Prog Logic |
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