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X68257S

Description
E2 Micro-Peripheral
File Size69KB,14 Pages
ManufacturerXicon Passive Components
Websitehttp://www.xicor.com
Download Datasheet Compare View All

X68257S Overview

E2 Micro-Peripheral

X68257
68XX Microcontroller Family Compatible
256K
X68257
E
2
Micro-Peripheral
DESCRIPTION
32,768 x 8 Bit
FEATURES
• Multiplexed Address/Data Bus
—Direct Interface to Popular 68HC11 Family
• High Performance CMOS
—Fast Access Time, 120ns
—Low Power
—60mA Active Maximum
—500
µ
A Standby Maximum
• Software Data Protection
• Toggle Bit Polling
—Early End of Write Detection
• Page Mode Write
—Allows up to 128 Bytes to be Written in
One Write Cycle
• High Reliability
—Endurance: 10,000 Write Cycle
—Data Retention: 100 Years
• 28-Lead PDIP Package
• 28-Lead SOIC Package
• 32-Lead PLCC Package
The X68257 is an 32K x 8 E
2
PROM fabricated with
advanced CMOS Textured Poly Floating Gate Technol-
ogy. The X68257 features a multiplexed address and
data bus allowing direct interface to a variety of popular
single-chip microcontrollers operating in expanded mul-
tiplexed mode without the need for additional interface
circuitry.
FUNCTIONAL DIAGRAM
CE, CE
R/W
E
SEL
A8–A14
CONTROL
LOGIC
X
D
E
C
O
D
E
SOFTWARE
DATA
PROTECT
AS
L
A
T
C
H
E
S
32K x 8
E2PROM
Y DECODE
I/O & ADDRESS LATCHES AND BUFFERS
A/D0–A/D7
6539 ILL F02.2
© Xicor, Inc. 1994, 1995, 1996 Patents Pending
6539-1.7 9/16/96 T0/C1/D2 SH
1
Characteristics subject to change without notice

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X68257S X68257SM X68257SI X68257PI X68257PM X68257P X68257JM X68257J X68257 X68257JI
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