ISO 7816 Compatible
2K
256 x 8 Bit
X24026
Serial E2PROM
FEATURES
DESCRIPTION
2
The X24026 is a CMOS 2048 bit serial E PROM, inter-
nally organized 256 x 8. The X24026 features a serial
interface and software protocol allowing operation on a
simple two wire bus.
• 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
2
Xicor E PROMs 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.
—Endurance: 100,000 Cycles
—Data Retention: 100Years
—ESD Protection > 2KV
FUNCTIONAL DIAGRAM
V
CC
V
SS
H.V. GENERATION
START CYCLE
TIMING
& CONTROL
SDA
START
STOP
LOGIC
CONTROL
LOGIC
SLAVE ADDRESS
REGISTER
+COMPARATOR
2
E
PROM
XDEC
64 X 32
LOAD
WORD
INC
SCL
ADDRESS
COUNTER
R/W
YDEC
8
CK
D
OUT
PIN
DATA REGISTER
D
OUT
ACK
7020 FRM 01
Xicor, Inc. 1994, 1995, 1996 Patents Pending
7020-1.2 2/24/97 T1/C0/D2 SH
Characteristics subject to change without notice
1
XICOR [ XICOR INC. ]
