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X68C64P fiches techniques PDF

Xicor - E2 Micro-Peripheral

Numéro de référence X68C64P
Description E2 Micro-Peripheral
Fabricant Xicor 
Logo Xicor 





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X68C64P fiche technique
X686X8CX6M4icrocontroller Family Compatible
64K
X68C64
8192 x 8 Bit
E2 Micro-Peripheral
FEATURES
CONCURRENT READ WRITE
—Dual Plane Architecture
—Isolates Read/Write Functions
Between Planes
—Allows Continuous Execution of Code
From One Plane While Writing in
the Other Plane
Multiplexed Address/Data Bus
—Direct Interface to Popular 8-bit
Microcontrollers, e.g., Motorola M6801/03,
M68HC11 Family
High Performance CMOS
—Fast Access Time, 120ns
—Low Power
—60mA Maximum Active
—500µA Maximum Standby
Software Data Protection
Block Protect Register
—Individually Set Write Lock Out in 1K Blocks
Toggle Bit Polling
—Early End of Write Detection
Page Mode Write
—Allows up to 32 Bytes to be Written in
One Write Cycle
High Reliability
—Endurance: 100,000 Write Cycles
—Data Retention: 100 Years
DESCRIPTION
The X68C64 is an 8K x 8 E2PROM fabricated with
advanced CMOS Textured Poly Floating Gate Technol-
ogy. The X68C64 features a Multiplexed Address and
Data bus allowing a direct interface to a variety of
popular single-chip microcontrollers operating in ex-
panded multiplexed mode without the need for addi-
tional interface circuitry.
The X68C64 is internally configured as two independent
4K x 8 memory arrays. This feature provides the ability
to perform nonvolatile memory updates in one array and
continue operation out of code stored in the other array;
effectively eliminating the need for an auxiliary memory
device for code storage.
To write to the X68C64, a three-byte command
sequence must precede the byte(s) being written. The
X68C64 also provides a second generation software
data protection scheme called Block Protect. Block
Protect can provide write lockout of the entire device or
selected 1K blocks. There are eight 1K x 8 blocks that
can be write protected individually in any combination
required by the user. Block Protect, in addition to Write
Control input, allows the different segments of the memory
to have varying degrees of alterability in normal system
operation.
FUNCTIONAL DIAGRAM
CE
R/W
E
SEL
A8–A11
AS
CONTROL
LOGIC
LX
AD
TE
CC
HO
ED
SE
WC
A12
SOFTWARE
DATA
PROTECT
A12
1K BYTES A12 1K BYTES
M
1K BYTES
1K BYTES
U
1K BYTES X 1K BYTES
1K BYTES
1K BYTES
Y DECODE
CONCURRENT READ WRITEis a trademark of Xicor, Inc.
© Xicor, Inc. 1991, 1995, 1996 Patents Pending
3868-2.6 9/16/96 T0/C0/D2 SH
I/O & ADDRESS LATCHES AND BUFFERS
A/D0–A/D7
3868 FHD F02
1 Characteristics subject to change without notice

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