PDF STK11C48 Data sheet ( Hoja de datos )

Número de pieza	STK11C48
Descripción	8K x 8 nvSRAM QuantumTrap CMOS Nonvolatile Static RAM
Fabricantes	Simtek
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No Preview Available ! STK11C48 2K x 8 nvSRAM QuantumTrap™ CMOS Nonvolatile Static RAM FEATURES • 25ns, 35ns and 45ns Access Times • STORE to Nonvolatile Elements Initiated by Software • RECALL to SRAM Initiated by Software or Power Restore • 10mA Typical ICC at 200ns Cycle Time • Unlimited READ, WRITE and RECALL Cycles • 1,000,000 STORE Cycles to Nonvolatile Ele- ments • 100-Year Data Retention in Nonvolatile Ele- ments • Commercial and Industrial Temperatures • 28-Pin 300 mil PDIP, 300 mil SOIC and 350 mil SOIC Packages DESCRIPTION The Simtek STK11C48 is a fast static RAM with a nonvolatile element incorporated in each static memory cell. The SRAM can be read and written an unlimited number of times, while independent, non- volatile data resides in the Nonvolatile Elements. Data transfers from the SRAM to the Nonvolatile Ele- ments (the STORE operation), or from Nonvolatile Elements to SRAM (the RECALL operation), take place using a software sequence. Transfers from the Nonvolatile Elements to the SRAM (the RECALL operation) also take place automatically on restora- tion of power. BLOCK DIAGRAM Quantum Trap 32 x 512 A5 STORE A6 STATIC RAM A7 ARRAY RECALL A8 32 x 512 A9 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 COLUMN I/O COLUMN DEC A0 A1 A2 A3 A4 A10 STORE/ RECALL CONTROL SOFTWARE DETECT G E W A0 - A10 PIN CONFIGURATIONS NC NC A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 VCC 27 W 26 NC 25 A8 24 A9 23 NC 22 G 21 A10 20 E 19 DQ7 18 DQ6 17 DQ5 16 DQ4 15 DQ3 28 - 300 PDIP 28 - 300 SOIC 28 - 350 SOIC PIN NAMES A0 - A10 W Address Inputs Write Enable DQ0 - DQ7 E Data In/Out Chip Enable G Output Enable VCC Power (+ 5V) VSS Ground December 2002 1 Document Control # ML0003 rev 0.0 1 page STORE INHIBIT/POWER-UP RECALL SYMBOLS NO. Standard PARAMETER 22 tRESTORE 23 tSTORE 24 VSWITCH 25 VRESET Power-up RECALL Duration STORE Cycle Duration Low Voltage Trigger Level Low Voltage Reset Level Note k: tRESTORE starts from the time VCC rises above VSWITCH. STORE INHIBIT/POWER-UP RECALL VCC 24 5V VSWITCH VR2E5SET STORE INHIBIT POWER-UP RECALL DQ (DATA OUT) 22 tRESTORE STK11C48 (VCC = 5.0V + 10%) STK11C48 MIN MAX UNITS NOTES 550 µs 10 ms k 4.0 4.5 V 3.6 V POWER-UP RECALL BROWN OUT STORE INHIBIT NO RECALL (VCC DID NOT GO BELOW VRESET) BROWN OUT STORE INHIBIT NO RECALL (VCC DID NOT GO BELOW VRESET) BROWN OUT STORE INHIBIT RECALL WHEN VCC RETURNS ABOVE VSWITCH December 2002 5 Document Control # ML0003 rev 0.0 5 Page

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Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
STK11C48	8K x 8 nvSRAM QuantumTrap CMOS Nonvolatile Static RAM	Simtek

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