
Preliminary Information
1
 Xicor, 1991 Patents Pending
Characteristics subject to change without notice
Serial E
2
PROM
TYPICAL FEATURES
 2.7V to 5.5V Power Supply
 Low Power CMOS
—Active Read Current Less Than 1 mA
—Active Write Current Less Than 3 mA
—Standby Current Less Than 50 
μ
A
 Internally Organized 1024 x 8
 2 Wire Serial Interface
—Bidirectional Data Transfer Protocol
 Sixteen Byte Page Write Mode
—Minimizes Total Write Time Per Byte
 Self Timed Write Cycle
—Typical Write Cycle Time of 5 ms
 High Reliability
—Endurance: 100,000 Cycles
—Data Retention: 100 Years
 8 Pin Mini-DlP, 8 Pin SOIC and 14 Pin
SOIC Packages
DESCRIPTION
The X24C08 is a CMOS 8,192 bit serial E
2
PROM,
internally organized 1024 x 8. The X24C08 features a
serial interface and software protocol allowing operation
on a simple two wire bus.
The X24C08 is fabricated with Xicor’s advanced CMOS
Textured Poly Floating Gate Technology.
The X24C08 utilizes Xicor’s proprietary Direct Write
cell providing  a minimum endurance of 100,000 cycles
and a minimum data retention of 100 years.
8K
X24C08
1024 x 8 Bit
FUNCTIONAL DIAGRAM
3842 FHD F01
START 
STOP 
LOGIC
CONTROL 
LOGIC
SLAVE ADDRESS
REGISTER
+COMPARATOR
H.V. GENERATION
TIMING
& CONTROL
WORD
ADDRESS
COUNTER
XDEC
YDEC
DOUT
ACK
E
2
PROM
64 X 128
DATA REGISTER
START CYCLE
(8)  VCC
(4)  VSS
(7)  TEST
R/W
PIN
(5)  SDA
(6) SCL
(3)  A2
(2)  A1
(1)  A0
DOUT
LOAD
INC
CK
8
3842-1