X24128

128K X24128 400KHz 2-Wire Serial E2PROM with Block LockTM DESCRIPTION 16K x 8 Bit FEATURES Save Critical Data with Programmable Block Lock Protection —Block Lock (0, 1/4, 1/2, or all of E2PROM Array) —Software Write Protection —Programmable Hardware Write Protect In Circuit Programmable ROM Mode 400KHz 2-Wire Serial Interface —Schmitt Trigger Input Noise Suppression —Output Slope Control for Ground Bounce Noise Elimination Longer Battery Life With Lower Power —Active Read Current Less Than 1mA —Active Write Current Less Than 3mA —Standby Current Less Than 1µA 1.8V to 3.6V, 2.5V to 5.5V and 4.5V to 5.5V Power Supply Versions 32 Word Page Write Mode —Minimizes Total Write Time Per Word Internally Organized 16K x 8 Bidirectional Data Transfer Protocol Self-Timed Write Cycle —Typical Write Cycle Time of 5ms High Reliability —Endurance: 100,000 Cycles —Data Retention: 100 Years 14-Lead SOIC 16-Lead SOIC 8-Lead PDIP The X24128 is a CMOS Serial E2PROM, internally organized 16K x 8. The device features a serial interface and software protocol allowing operation on a simple two wire bus. Three device select inputs (S0–S2) allow up to eight devices to share a common two wire bus. A Write Protect Register at the highest address location, FFFFh, provides three write protection features: Software Write Protect, Block Lock Protect, and Programmable Hardware Write Protect. The Software Write Protect feature prevents any nonvolatile writes to the device unt...