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X88257 fiches techniques PDF

Xicor - E2 Micro-Peripheral

Numéro de référence X88257
Description E2 Micro-Peripheral
Fabricant Xicor 
Logo Xicor 





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X88257 fiche technique
8X0858125M7icrocontroller Family Compatible
256K
X88257
32,768 x 8 Bit
E2 Micro-Peripheral
FEATURES
• Multiplexed Address/Data Bus
—Direct Interface to Popular 8051 Family
• High Performance CMOS
—Fast Access Time, 120ns
—Low Power
—60mA Active Maximum
—500µA 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
DESCRIPTION
The X88257 is an 32K x 8 E2PROM fabricated with
advanced CMOS Textured Poly Floating Gate Technol-
ogy. The X88257 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
WR
RD
PSEN
A8–A14
ALE
CONTROL
LOGIC
LX
AD
TE
CC
HO
ED
SE
SOFTWARE
DATA
PROTECT
32K x 8
E2PROM
Y DECODE
I/O & ADDRESS LATCHES AND BUFFERS
A/D0–A/D7
6509 ILL F02.1
© Xicor, Inc. 1994-1997 Patents Pending
6509-1.9 4/9/96 T2/C5/D8 NS
1 Characteristics subject to change without notice

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