X24012 Datasheet, PDF (1/14 Pages) Xicor Inc. – Serial E2PROM

Preliminary Information
XP2in4071N2o Connect
1K
X24012
Serial E²PROM
128 x 8 Bit
FEATURES
• 2.7 to 5.5V Power Supply
• 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
—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
DESCRIPTION
The X24012 is a CMOS 1024 bit serial E²PROM,
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.
Xicor E²PROMs 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.
FUNCTIONAL DIAGRAM
(8) VCC
(4) VSS
(5) SDA
(6) SCL
(3) A2
(2) A1
(1) A0
START
STOP
LOGIC
SLAVE ADDRESS
REGISTER
+COMPARATOR
START CYCLE
CONTROL
LOGIC
LOAD
INC
WORD
ADDRESS
COUNTER
XDEC
H.V. GENERATION
TIMING
& CONTROL
E²PROM
32 X 32
R/W
PIN
DOUT
ACK
YDEC
8
CK _{DATA REGISTER DOUT}
3847 FHD F01
© Xicor, 1991 Patents Pending
3847-1
1
Characteristics subject to change without notice