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AM27X512-150JI Scheda tecnica(PDF) 1 Page - Advanced Micro Devices |
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AM27X512-150JI Scheda tecnica(HTML) 1 Page - Advanced Micro Devices |
1 / 10 page FINAL Publication# 12081 Rev: F Amendment/0 Issue Date: May 1998 Am27X512 512 Kilobit (64 K x 8-Bit) CMOS ExpressROM Device DISTINCTIVE CHARACTERISTICS s As an OTP EPROM alternative: — Factory optimized programming — Fully tested and guaranteed s As a Mask ROM alternative: — Shorter leadtime — Lower volume per code s Fast access time — 70 ns s Single +5 V power supply s Compatible with JEDEC-approved EPROM pinout s ±10% power supply tolerance s High noise immunity s Low power dissipation — 100 µA maximum CMOS standby current s Available in Plastic Dual-In-line Package (PDIP) and Plastic Leaded Chip Carrier (PLCC) s Latch-up protected to 100 mA from –1 V to VCC + 1 V s Versatile features for simple interfacing — Both CMOS and TTL input/output compatibility — Two line control functions GENERAL DESCRIPTION The Am27X512 is a factory programmed and tested OTP EPROM. It is programmed after packaging prior to final test. Every device is rigorously tested under AC and DC operating conditions to your stable code. It is organized as 64 Kwords by 8 bits per word and is avail- able in plastic dual in-line packages (PDIP), as well as plastic leaded chip carrier (PLCC) packages. Express- ROM devices provide a board-ready memory solution for medium to high volume codes with short leadtimes. This offers manufacturers a cost-effective and flexible alternative to OTP EPROMs and mask programmed ROMs. Data can be accessed as fast as 70 ns, allowing high-performance microprocessors to operate with re- duced WAIT states. The device offers separate Output Enable (OE#) and Chip Enable (CE#) controls, thus eliminating bus contention in a multiple bus micropro- cessor system. AMD’s CMOS process technology provides high speed, low power, and high noise immunity. Typical power consumption is only 80 mW in active mode, and 100 µW in standby mode. BLOCK DIAGRAM 12081F-1 A0–A15 Address Inputs CE# OE# VCC VSS Data Outputs DQ0–DQ7 Output Buffers Y Gating 524,288 Bit Cell Matrix X Decoder Y Decoder Output Enable Chip Enable and Prog Logic |
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