X24026

ISO 7816 Compatible 2K X24026 Serial E2PROM DESCRIPTION 256 x 8 Bit FEATURES 2.7V to 5.5V Power Supply Low Power CMOS —Active Current Less Than 1mA —Standby Current Less Than 50µ A 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 —Endurance: 100,000 Cycles —Data Retention: 100 Years —ESD Protection > 2KV The X24026 is a CMOS 2048 bit serial E2PROM, internally organized 256 x 8. The X24026 features a serial interface and software protocol allowing operation on a simple two wire bus. Xicor E2PROMs 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. FUNCTIONAL DIAGRAM VCC VSS START CYCLE SDA START STOP LOGIC CONTROL LOGIC SLAVE ADDRESS REGISTER +COMPARATOR XDEC E 2 PROM 64 X 32 H.V. GENERATION TIMING & CONTROL SCL LOAD INC WORD ADDRESS COUNTER R/W YDEC 8 CK PIN DOUT ACK 7020 FRM 01 DATA REGISTER DOUT ©Xicor, Inc. 1994, 1995, 1996 Patents Pending 7020-1.2 2/24/97 T1/C0/D2 SH 1 Characteristics subject to change without notice X24026 PIN DESCRIPTIONS Serial Clock (SCL) The SCL input is used to clock all data into and out of the device. Serial Data (SDA) SDA is a bidirectional pin used to transfer data into and out of the device. It is an open drain ...