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AM27C512-55DE 数据表(PDF) 1 Page - Advanced Micro Devices

部件名 AM27C512-55DE
功能描述  512 Kilobit (64 K x 8-Bit) CMOS EPROM
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制造商  AMD [Advanced Micro Devices]
网页  http://www.amd.com
标志 AMD - Advanced Micro Devices

AM27C512-55DE 数据表(HTML) 1 Page - Advanced Micro Devices

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FINAL
Publication# 08140
Rev: I
Amendment/0
Issue Date: May 1998
Am27C512
512 Kilobit (64 K x 8-Bit) CMOS EPROM
DISTINCTIVE CHARACTERISTICS
s Fast access time
— Speed options as fast as 55 ns
s Low power consumption
— 20 µA typical CMOS standby current
s JEDEC-approved pinout
s Single +5 V power supply
s
±10% power supply tolerance standard
s 100% Flashrite™ programming
— Typical programming time of 8 seconds
s Latch-up protected to 100 mA from –1 V to
VCC + 1 V
s High noise immunity
s Versatile features for simple interfacing
— Both CMOS and TTL input/output compatibility
— Two line control functions
s Standard 28-pin DIP, PDIP, and 32-pin PLCC
packages
GENERAL DESCRIPTION
The Am27C512 is a 512-Kbit, ultraviolet erasable pro-
grammable read-only memory. It is organized as 64K
words 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 80 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 8 seconds.
BLOCK DIAGRAM
08140I-1
A0–A15
Address
Inputs
CE#
OE#/VPP
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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