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X25C02SM Datasheet

  • X25C02SM

  • SPI Serial E2PROM

  • 14頁

  • XICOR   XICOR

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A
PPLICATION
N
OTES
A V A I L A B L E
AN9 鈥?/div>
X25C02
AN18 鈥?AN31 鈥?AN37 鈥?AN40
2K
X25C02
SPI Serial E
2
PROM
256 x 8 Bit
FEATURES
DESCRIPTION
The X25C02 is a CMOS 2048-bit serial E
2
PROM, inter-
nally organized as 256 x 8. The X25C02 features a serial
interface and software protocol allowing operation on a
simple three-wire bus. The bus signals are a clock input
(SCK) plus separate data in (SI) and data out (SO) lines.
Access to the device is controlled through a chip select
(CS) input, allowing any number of devices to share the
same bus.
The X25C02 also features two additional inputs that
provide the end user with added flexibility. By asserting
the
HOLD
input, the X25C02 will ignore transitions on its
inputs, thus allowing the host to service higher priority
interrupts. The
WP
input can be used as a hardwire input
to the X25C02 disabling all write attempts, thus provid-
ing a mechanism for limiting end user capability of
altering the memory.
The X25C02 utilizes Xicor鈥檚 proprietary Direct Write鈩?/div>
cell, providing a minimum endurance of 100,000 cycles
per byte and a minimum data retention of 100 years.
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
1MHz Clock Rate
256 X 8 Bits
鈥? Byte Page Mode
Low Power CMOS
鈥?50
碌
A Standby Current
鈥?mA Active Current
5V Power Supply
Built-in Inadvertent Write Protection
鈥擯ower-Up/Power-Down protection circuitry
鈥擶rite Latch
鈥擶rite Protect Pin
Self-Timed Write Cycle
鈥?ms Write Cycle Time (Typical)
High Reliability
鈥擡ndurance: 100,000 cycles per byte
鈥擠ata Retention: 100 Years
鈥擡SD protection: 2000V on all pins
Available Packages
鈥?-Lead MSOP
鈥?-Lead PDlP
鈥?-Lead SOIC
FUNCTIONAL DIAGRAM
SO
SI
SCK
CS
HOLD
COMMAND
DECODE
AND
CONTROL
LOGIC
64
X
DECODE
LOGIC
256 BYTE ARRAY
(64 X 32)
4
WRITE
CONTROL
AND
TIMING
LOGIC
Y DECODE
DATA REGISTER
8
WP
3843 FHD F01
Direct Write
鈩?/div>
is a trademark of Xicor, Inc.
漏Xicor, Inc. 1994, 1995, 1996 Patents Pending
3843-1.6 6/10/96 T5/C1/D1 NS
1
Characteristics subject to change without notice

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