Recommended System Management
Alternative: X5083
8K
1024 x 8 Bit
X25097
5MHz Low Power SPI Serial EEPROM with IDLock™ Memory
FEATURES
DESCRIPTION
• 5MHz clock rate
• IDLock memory
—IDLock first or last page, any 1/4 or lower 1/2 of
EEPROM array
• Low power CMOS
—<1µA standby current
—<3mA active current during write
—<400µA active current during read
• 2.7V-5.5V operation
The X25097 is a CMOS 8K-bit serial EEPROM, inter-
nally organized as 1024 x 8. The X25097 features a
Serial Peripheral Interface (SPI) and software protocol,
allowing operation on a simple four-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.
IDLock is a programmable locking mechanism which
allows the user to lock system ID and parametric data
in different portions of the EEPROM memory space,
ranging from as little as one page to as much as 1/2 of
the total array. The X25097 also features a WP pin that
can be used for hardwire protection of the part, dis-
abling all write attempts, as well as a Write Enable
Latch that must be set before a write operation can be
initiated.
• Built-in inadvertent write protection
—Power-up/power-down protection circuitry
—Write enable latch
—Write protect pin
• SPI modes (0,0 & 1,1)
• 1024 x 8 bits
—16-byte page mode
• Self-timed write cycle
—5ms write cycle time (typical)
• High reliability
—Endurance: 1,000,000 cycles/byte
—Data retention: 100 years
—ESD: 2000V on all pins
• 8-lead MSOP package
• 8-lead TSSOP package
• 8-lead SOIC package
The X25097 utilizes Xicor’s proprietary Direct Write™
cell, providing a minimum endurance of 1,000,000
cycles per byte and a minimum data retention of 100
years.
BLOCK DIAGRAM
Data Register
SI
Y Decode Logic
SO
16
8
Command
Decode
and
Control
Logic
X
64
SCK
Decode
Logic
8K EERPM
Array
(1024 x 8)
CS
High Voltage
Control
Write Control Logic
WP
Characteristics subject to change without notice. 1 of 14
REV 1.1 9/8/00
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