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X25021S

Description
EEPROM, 256X8, Serial, CMOS, PDSO8, PLASTIC, SOIC-8
Categorystorage    storage   
File Size116KB,14 Pages
ManufacturerIC Microsystems Sdn Bhd
Download Datasheet Parametric View All

X25021S Overview

EEPROM, 256X8, Serial, CMOS, PDSO8, PLASTIC, SOIC-8

X25021S Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerIC Microsystems Sdn Bhd
Parts packaging codeSOIC
package instructionSOP, SOP8,.25
Contacts8
Reach Compliance Codeunknown
ECCN codeEAR99
Maximum clock frequency (fCLK)1 MHz
Data retention time - minimum100
Durability100000 Write/Erase Cycles
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length4.9 mm
memory density2048 bit
Memory IC TypeEEPROM
memory width8
Humidity sensitivity level3
Number of functions1
Number of terminals8
word count256 words
character code256
Operating modeSYNCHRONOUS
Maximum operating temperature70 °C
Minimum operating temperature
organize256X8
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Parallel/SerialSERIAL
Peak Reflow Temperature (Celsius)240
power supply5 V
Certification statusNot Qualified
Maximum seat height1.75 mm
Serial bus typeSPI
Maximum standby current0.00001 A
Maximum slew rate0.003 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)4.5 V
Nominal supply voltage (Vsup)5 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3.9 mm
Maximum write cycle time (tWC)10 ms
write protectHARDWARE/SOFTWARE
ICmic
TM
This X25021 device has been acquired by
IC MICROSYSTEMS from Xicor, Inc.
IC MICROSYSTEMS
2K
2
X25021
SPI Serial E PROM with Block Lock
TM
256 x 8 Bit
Protection
2
FEATURES
DESCRIPTION
The X25021 is a CMOS 2048-bit serial E PROM, internally
organized as 256 x 8. The X25021 features a Serial
Peripheral Interface (SPI) 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
1MHz Clock Rate
SPI Modes (0,1 & 1,0)
256 X 8 Bits
—4
Byte Page Mode
Low Power CMOS
—10µA Standby Current
—3mA Active Current
2.7V To 5.5V Power Supply
Block Lock Protection
Protect 1/4, 1/2 or all of E
2
PROM Array
Built-in Inadvertent Write Protection
—Power-Up/Power-Down protection circuitry
—Write Latch
—Write Protect Pin
through a chip select (CS) input, allowing any number of
devices to share the same bus.
The X25021 also features two additional inputs that
provide the end user with added flexibility. By asserting
the HOLD input, the X25021 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 X25021 disabling all write attempts, thus providing
a mechanism for limiting end user capability of altering the
memory.
The X25021 utilizes Xicor’s proprietary Direct Write™ cell,
providing a minimum endurance of 100,000 cycles
per byte and a minimum data retention of 100 years.
Self-Timed Write Cycle
—5ms
Write Cycle Time (Typical)
High Reliability
—Endurance: 100,000 cycles per byte
—Data Retention: 100 Years
ESD protection: 2000V on all pins
8-Lead PDlP Package
8-Lead SOIC Package
FUNCTIONAL DIAGRAM
STATUS
REGISTER
WRITE
PROTECT
LOGIC
X DECODE
LOGIC
256 BYTE
ARRAY
16
SO
SI
16 X 32
SCK
CS
HOLD
COMMAND
DECODE
AND
CONTROL
LOGIC
16
16 X 32
32
32 X 32
WP
WRITE
CONTROL
AND
TIMING
LOGIC
4
8
Y DECODE
DATA REGISTER
6615 FHD F01
Characteristics subject to change without notice
Direct Write™ and Block Lock™ Protection is a trademark of Xicor, Inc.
©Xicor, Inc. 1995, 1996 Patents Pending
6615-1.5 6/10/96 T3/C1/D0 NS
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