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Xicor
Xicor


X24026Y

Serial E2PROM



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X24026Y pdf
ISO 7816 Compatible
2K
X24026
256 x 8 Bit
Serial E2PROM
FEATURES
• 2.7V to 5.5V Power Supply
• Low Power CMOS
—Active Current Less Than 1mA
—Standby Current Less Than 50µA
• Internally Organized 256 x 8
• Self Timed Write Cycle
—Typical Write Cycle Time of 5 ms
• 2 Wire Serial Interface
—Bidirectional Data Transfer Protocol
• Four Byte Page Write Operation
—Minimizes Total Write Time Per Byte
• High Reliability
—Endurance: 100,000 Cycles
—Data Retention: 100 Years
—ESD Protection > 2KV
DESCRIPTION
The X24026 is a CMOS 2048 bit serial E2PROM, inter-
nally organized 256 x 8. The X24026 features a serial
interface and software protocol allowing operation on a
simple two wire bus.
Xicor E2PROMs are designed and tested for applications
requiring extended endurance. Inherent data retention is
greater than 100 years. Available in DICE form with ISO
7816 compatible pinout.
FUNCTIONAL DIAGRAM
VCC
VSS
SDA
SCL
START
STOP
LOGIC
SLAVE ADDRESS
REGISTER
+COMPARATOR
START CYCLE
CONTROL
LOGIC
LOAD
INC
WORD
ADDRESS
COUNTER
XDEC
H.V. GENERATION
TIMING
& CONTROL
E2 PROM
64 X 32
R/W
DOUT
ACK
PIN
YDEC
8
CK DATA REGISTER DOUT
7020 FRM 01
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
7020-1.2 2/24/97 T1/C0/D2 SH
1 Characteristics subject to change without notice



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X24026Y pdf
X24026
PIN DESCRIPTIONS
Serial Clock (SCL)
The SCL input is used to clock all data into and out of the
device.
Serial Data (SDA)
SDA is a bidirectional pin used to transfer data into and
out of the device. It is an open drain output and may be
wire-ORed with any number of open drain or open
collector outputs.
An open drain output requires the use of a pull-up
resistor. For selecting typical values, refer to the
Guidelines for Calculating Typical Values of Bus Pull-Up
Resistors graph.
DIE CONFIGURATION
VSS
VCC
SDA
SCL
SDA
X24026 Die Revision A
.055 x .079
7020 FRM 02
PIN DESCRIPTIONS
Symbol
SDA
SCL
VSS
VCC
Description
Serial Data
Serial Clock
Ground
+5V
7020 FRM T01
2



Part Number X24026Y
Description Serial E2PROM
Maker Xicor - Xicor
Total Page 15 Pages
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