Preliminary Information
X24012
Pin 7 No Connect
1K
X24012
128 x 8 Bit
Serial E2PROM
FEATURES
DESCRIPTION
2
• 2.7 to 5.5V Power Supply
The X24012 is a CMOS 1024 bit serial E PROM,
internally organized as one 128 x 8 bank. The X24012
features a serial interface and software protocol allow-
ing operation on a simple two wire bus. Three address
inputs allow up to eight devices to share a common two
wire bus.
• Low Power CMOS
—Active Current Less Than 1 mA
—Standby Current Less Than 50 µA
• Internally Organized 128 x 8
• Self Timed Write Cycle
—Typical Write Cycle Time of 5 ms
• 2 Wire Serial Interface
2
Xicor E PROMs are designed and tested for applica-
tions requiring extended endurance. Inherent data re-
tention is greater than 100 years. The X24012 is avail-
able in eight pin DIP and SOIC packages.
—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
FUNCTIONAL DIAGRAM
(8) V
(4) V
CC
SS
H.V. GENERATION
START CYCLE
TIMING
& CONTROL
START
STOP
(5) SDA
LOGIC
CONTROL
LOGIC
SLAVE ADDRESS
REGISTER
+COMPARATOR
2
E PROM
XDEC
32 X 32
LOAD
INC
(6) SCL
(3) A
2
WORD
ADDRESS
COUNTER
(2) A
(1) A
1
0
R/W
YDEC
8
CK
D
OUT
PIN
DATA REGISTER
D
OUT
ACK
3847 FHD F01
© Xicor, 1991 Patents Pending
3847-1
Characteristics subject to change without notice
1
XICOR [ XICOR INC. ]
