XM20C64 Datasheet | Xicor Inc.

FEATURES DESCRIPTION The XM20C64 is a high speed nonvolatile RAM Module. It is prised of four Xicor X20C16 high speed NOVRAMs, a high speed decoder and decoupling capacitors mounted on a co-fired multilayered Ceramic substrate. The XM20C64 is configured 8K x 8 and is fully decoded. The module is a 28-lead DIP conforming to the industry standard pinout for SRAMs. The XM20C64 fully supports the AUTOSTORE feature , providing hands-off automatic storing of RAM data into E2PROM when VCC falls below the AUTOSTORE threshold. The XM20C64 is a highly reliable memory ponent, supporting unlimited writes to RAM, a minimum 1,000,000 store cycles and a minimum 100 year data retention. - - - - - - - - - - - High Speed: t AA = 55ns NO Batteries!! Low Power CMOS AUTOSTORE™ NOVRAM - Automatically Stores RAM data to E2PROM upon Power-fail Detection Open Drain AUTOSTORE Output Pin - Provides Interrupt or Status Information - Linkable to System Reset Circuitry Auto Recall - Automatically Recalls E2PROM Data During Power-on Fully Decoded Module Full Military Temperature Range - - 55°C to +125°C High Reliability - Endurance: 1,000,000 Nonvolatile Store Cycles - Data Retention: 100 Years ESD Protection - ≥2KV All Pins Also Available in 66 Pin PUMA Package FUNCTIONAL DIAGRAM 2 25 31 23 PIN CONFIGURATION A0- A10 NE OE WE NE OE WE CE 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 AS A8 A9 A11 OE A10 CE I/O7 I/O6 I/O5 I/04 I/O3 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 VSS I/O 30 2 A11 A12 2 3 A0 A1 Y0 Y1 Y2 Y3 CE 1 4 5 6 7 2 25 31 23 25 31 23 NE OE WE CE A0- A10 I/O 30 NE OE WE CE A0- A10 I/O 30 2 25 31 23 AUTOSTORE AUTOSTORE™ NOVRAM is a trademark of Xicor, Inc. ©Xicor, Inc. 1991, 1995, 1996 Patents Pending 3874-1.6 6/20/96 T0/C2/D0 NS 3874 FHD...