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X20C16JMB-45 Datasheet(PDF) 1 Page - Xicor Inc. |
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X20C16JMB-45 Datasheet(HTML) 1 Page - Xicor Inc. |
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1 / 21 page  X20C16 1 ©Xicor, Inc. 1991, 1995, 1996 Patents Pending Characteristics subject to change without notice 3826-2.9 7/31/97 T4/C0/D0 SH AUTOSTORE™ NOVRAM is a trademark of Xicor, Inc. High Speed AUTOSTORE™ NOVRAM DESCRIPTION The Xicor X20C16 is a 2K x 8 NOVRAM featuring a high- speed static RAM overlaid bit-for-bit with a nonvolatile electrically erasable PROM (E2PROM) and the AUTOSTORE feature which automatically saves the RAM contents to E2PROM at power-down. The X20C16 is fabricated with advanced CMOS floating gate technol- ogy to achieve high speed with low power and wide power-supply margin. The X20C16 features a compat- ible JEDEC approved pinout for byte-wide memories, for 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 10 µs or less. An automatic array recall operation reloads the contents of the E2PROM into RAM upon power-up. 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 • Fast Access Time: 35ns, 45ns, 55ns • High Reliability —Endurance: 1,000,000 Nonvolatile Store Operations —Retention: 100 Years Minimum • AUTOSTORE™ NOVRAM —Automatically Stores RAM Data Into the E2PROM Array When VCC Low Threshold is Detected —User Enabled Option —Open Drain AUTOSTORE Status Output Pin • Power-on Recall —E2PROM Data Automatically Recalled Into RAM Upon Power-up • Software Data Protection —Locks Out Inadvertent Store Operations • Low Power CMOS —Standby: 250 µA • Infinite E2PROM Array Recall, and RAM Read and Write Cycles 16K X20C16 2K x 8 Bit PIN CONFIGURATION NE NC A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 VSS 1 VCC WE AS A8 A9 NC OE A10 CE I/O7 I/O6 I/O5 I/O4 I/O3 X20C16 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 A6 A5 A4 A3 A2 A1 A0 NC I/O0 A8 A9 NC 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 X20C16 (TOP VIEW) PLASTIC CERDIP LCC PLCC 3826 FHD F02 3826 FHD F15.1 3826 FHD F03 SOIC TSOP 3826 ILL F17.2 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 NC OE A9 A8 AS WE VCC NE NC A7 A6 A5 A4 A3 A10 CE I/O7 I/O6 I/O5 I/O4 I/O3 VSS I/O2 I/O1 I/O0 A0 A1 A2 X20C16 X20C16 APPLICATION NOTE A V AILABLE AN56 |
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