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X28HC256DM-70 Datasheet(PDF) 1 Page - Xicor Inc. |
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X28HC256DM-70 Datasheet(HTML) 1 Page - Xicor Inc. |
1 / 24 page X28HC256 1 ©Xicor, Inc. 1991, 1995 Patents Pending Characteristics subject to change without notice 3859-2.8 8/5/97 T1/C0/D0 EW 5 Volt, Byte Alterable E2PROM FEATURES • Access Time: 70ns • Simple Byte and Page Write —Single 5V Supply — No External High Voltages or VPP Control Circuits —Self-Timed — No Erase Before Write — No Complex Programming Algorithms —No Overerase Problem • Low Power CMOS: —Active: 60mA —Standby: 500 µA • Software Data Protection —Protects Data Against System Level Inadvertent Writes • High Speed Page Write Capability • Highly Reliable Direct Write™ Cell —Endurance: 100,000 Write Cycles —Data Retention: 100 Years • Early End of Write Detection — DATA Polling —Toggle Bit Polling DESCRIPTION The X28HC256 is a second generation high perfor- mance CMOS 32K x 8 E2PROM. It is fabricated with Xicor’s proprietary, textured poly floating gate tech- nology, providing a highly reliable 5 Volt only nonvolatile memory. The X28HC256 supports a 128-byte page write opera- tion, effectively providing a 24 µs/byte write cycle and enabling the entire memory to be typically rewritten in less than 0.8 seconds. The X28HC256 also features DATA Polling and Toggle Bit Polling, two methods of providing early end of write detection. The X28HC256 also supports the JEDEC standard Software Data Pro- tection feature for protecting against inadvertent writes during power-up and power-down. Endurance for the X28HC256 is specified as a minimum 100,000 write cycles per byte and an inherent data retention of 100 years. 256K X28HC256 32K x 8 Bit PIN CONFIGURATION LCC PLCC A6 A5 A4 A3 A2 A1 A0 NC I/O0 A8 A9 A11 NC OE A10 CE I/O7 I/O6 4 3 2 1 32 31 30 14 15 16 17 18 19 20 5 6 7 8 9 10 11 12 13 29 28 27 26 25 24 23 22 21 X28HC256 PLASTIC DIP CERDIP FLAT PACK SOIC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 X28HC256 A3 A4 A5 A6 A7 A12 A14 NC VCC NC WE A13 A8 A9 A11 OE 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 A2 A1 A0 I/O0 I/O1 I/O2 NC VSS NC I/O3 I/O4 I/O5 I/O6 I/O7 CE A10 3859 ILL F22 TSOP 3859 FHD F03 A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VCC WE A13 A8 A9 A11 OE A10 CE I/O7 I/O6 I/O5 I/04 I/O3 X28HC256 3859 FHD F02 |
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