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X24641S8-2.5 Datasheet(PDF) 1 Page - Xicor Inc. |
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X24641S8-2.5 Datasheet(HTML) 1 Page - Xicor Inc. |
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1 / 13 page  400 KHz 2-Wire Serial E2PROM 64K 8K x 8 Bit ©Xicor, 1995, 1996 Patents Pending Characteristics subject to change without notice 7026 3/27/97 T0/C0/D0 SH 1 X24641 FUNCTIONAL DIAGRAM FEATURES • 1.8V to 3.6V, 2.5V to 5.5V and 4.5V to 5.5V Power Supply Operation • Low Power CMOS —Active Read Current Less Than 1mA —Active Write Current Less Than 3mA —Standby Current Less Than 1 µA • 400KHz Fast Mode 2-Wire Serial Interface —Down to 1.8V —Schmitt Trigger Input Noise Suppression —Output Slope Control for Ground Bounce Noise Elimination • Internally Organized 8K x 8 • 32 Byte Page Write Mode —Minimizes Total Write Time Per Byte • Hardware Write Protect • Bidirectional Data Transfer Protocol • Self-Timed Write Cycle —Typical Write Cycle Time of 5ms • High Reliability —Endurance: 1,000,000 Cycles —Data Retention: 100 Years • 8-Lead SOIC DESCRIPTION The X24641 is a CMOS Serial E2PROM Memory, internally organized 8K x 8. The device features a serial interface and software protocol allowing opera- tion on a simple two wire bus. The bus operates at 400KHz all the way down to 1.8V. Three device select inputs (S0–S2) allow up to eight devices to share a common two wire bus. Hardware Write Protection is provided through a Write Protect (WP) input pin on the X24641. When the WP pin is HIGH, the upper quadrant of the Serial E2PROM array is protected against any nonvolatile write attempts. Xicor Serial E2PROM Memories are designed and tested for applications requiring extended endurance. Inherent data retention is greater than 100 years. SERIAL E2PROM DATA AND ADDRESS (SDA) SCL S2 S1 S0 WP COMMAND DECODE AND CONTROL LOGIC DEVICE SELECT LOGIC WRITE PROTECT LOGIC PAGE DECODE LOGIC DATA REGISTER Y DECODE LOGIC E2PROM WRITE VOLTAGE CONTROL 7026 FM 01 ARRAY 8K x 8 |
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