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參數(shù)資料
| 型號： | AM27X2048-255PC |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | PROM |
| 英文描述： | 2 Megabit (128 K x 16-Bit) CMOS ExpressROM Device |
| 中文描述： | 128K X 16 OTPROM, 250 ns, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 136K |
| 代理商： | AM27X2048-255PC |
FINAL
Publication#
15653
Issue Date:
May 1998
Rev:
D
Amendment/
0
Am27X2048
2 Megabit (128 K x 16-Bit) CMOS ExpressROM Device
DISTINCTIVE CHARACTERISTICS
I
As an OTP EPROM alternative:
— Factory optimized programming
— Fully tested and guaranteed
I
As a Mask ROM alternative:
— Shorter leadtime
— Lower volume per code
I
Fast access time
— 70 ns
I
Single +5 V power supply
I
Compatible with JEDEC-approved EPROM
pinout
I
±
10% power supply tolerance
I
High noise immunity
I
Low power dissipation
— 100 μA maximum CMOS standby current
I
Available in Plastic Dual-In-line Package (PDIP)
and Plastic Leaded Chip Carrier (PLCC)
I
Latch-up protected to 100 mA from –1 V to
V
CC
+ 1 V
I
Versatile features for simple interfacing
— Both CMOS and TTL input/output compatibility
— Two line control functions
GENERAL DESCRIPTION
The Am27X2048 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 128 Kwords by 16 bits per word and is
available in plastic dual in-line packages (PDIP), as
well as plastic leaded chip carrier (PLCC) packages.
ExpressROM 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 pro-
grammed 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 125 mW in active mode,
and 100 μW in standby mode.
BLOCK DIAGRAM
15653D-1
A0–A16
Address
Inputs
CE#
OE#
V
CC
V
SS
Data Outputs DQ0–DQ15
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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