X24012

Preliminary Information X24012 Pin 7 No Connect 1K X24012 Serial E2PROM DESCRIPTION 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 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 allowing 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 applications requiring extended endurance. Inherent data retention is greater than 100 years. The X24012 is available in eight pin DIP and SOIC packages. FUNCTIONAL DIAGRAM (8) VCC (4) VSS START CYCLE (5) SDA START STOP LOGIC CONTROL LOGIC SLAVE ADDRESS REGISTER +COMPARATOR XDEC E2PROM 32 X 32 H.V. GENERATION TIMING & CONTROL (6) SCL (3) A2 (2) A1 (1) A0 LOAD INC WORD ADDRESS COUNTER R/W YDEC 8 CK PIN DOUT ACK 3847 FHD F01 DATA REGISTER DOUT © Xicor, 1991 Patents Pending 3847-1 1 Characteristics subject to change without notice X24012 PIN DESCRIPTIONS Serial Clock (SCL) The SCL input is used to clock all data into and out of the device. Serial Data ...