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X20C04PI-25 Datasheet(PDF) 1 Page - Xicor Inc. |
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X20C04PI-25 Datasheet(HTML) 1 Page - Xicor Inc. |
1 / 15 page X20C04 1 ©Xicor, Inc. 1992, 1995, 1996 Patents Pending Characteristics subject to change without notice 3825-2.8 7/31/97 T4/C0/D0 SH Nonvolatile Static RAM DESCRIPTION The Xicor X20C04 is a 512 x 8 NOVRAM featuring a static RAM overlaid bit-for-bit with a nonvolatile electri- cally erasable PROM (E2PROM). The X20C04 is fabri- cated with advanced CMOS floating gate technology to achieve low power and wide power-supply margin. The X20C04 features the JEDEC approved pinout for byte- wide memories, compatible with industry standard RAMs, ROMs, EPROMs, and E2PROMs. The NOVRAM design allows data to be easily trans- ferred from RAM to E2PROM (store) and E2PROM to RAM (recall). The store operation is completed in 5ms or less and the recall operation is completed in 5 µs or less. Xicor NOVRAMS are designed for unlimited write operations to RAM, either from the host or recalls from E2PROM, and a minimum 1,000,000 store operations to the E2PROM. Data retention is specified to be greater than 100 years. FEATURES • High Reliability —Endurance: 1,000,000 Nonvolatile Store Operations —Retention: 100 Years Minimum • Power-on Recall —E2PROM Data Automatically Recalled Into SRAM Upon Power-up • Lock Out Inadvertent Store Operations • Low Power CMOS —Standby: 250 µA • Infinite E2PROM Array Recall, and RAM Read and Write Cycles • Compatible with X2004 4K X20C04 512 x 8 Bit PIN CONFIGURATION A6 A5 A4 A3 A2 A1 A0 NC I/O0 A8 NC NC NC OE NC CE I/O7 I/O6 4321 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 X20C04 (TOP VIEW) 3825 FHD F03 LCC PLCC NE NC A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 VSS 1 VCC WE NC A8 NC NC OE NC CE I/O7 I/O6 I/O5 I/O4 I/O3 X20C04 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 3825 FHD F02 PLASTIC CERDIP |
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