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STK20C04-W25 Folha de dados(PDF) 1 Page - Simtek Corporation |
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STK20C04-W25 Folha de dados(HTML) 1 Page - Simtek Corporation |
1 / 12 page March 2006 1 Document Control # ML0001 rev 0.2 STK20C04 512 x 8 nvSRAM QuantumTrap™ CMOS Nonvolatile Static RAM Obsolete - Not Recommend for new Designs DESCRIPTION The Simtek STK20C04 is a fast static RAM with a non- volatile element incorporated in each static memory cell. The SRAM can be read and written an unlimited number of times, while independent nonvolatile data resides in nonvolatile elements. Data may easily be transferred from the SRAM to the Nonvolatile Elements (the STORE operation), or from the Nonvolatile Ele- ments to the SRAM (the RECALL operation), using the NE pin. Transfers from the Nonvolatile Elements to the SRAM (the RECALL operation) also take place auto- matically on restoration of power. The STK20C04 combines the high performance and ease of use of a fast SRAM with nonvolatile data integrity. The STK20C04 features industry-standard pinout for nonvolatile RAMs in a 28-pin 600 mil plastic DIP. BLOCK DIAGRAM Quantum Trap 16 x 256 STORE RECALL COLUMN I/O COLUMN DEC STATIC RAM ARRAY 16 x 256 STORE/ RECALL CONTROL A7 A8 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 G E W A6 A5 A3 A2 A0 A1 NE A4 PIN NAMES A0 - A8 Address Inputs W Write Enable DQ0 - DQ7 Data In/Out E Chip Enable G Output Enable NE Nonvolatile Enable VCC Power (+ 5V) VSS Ground PIN CONFIGURATIONS NE NC A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS VCC NC A8 NC NC G W 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 E DQ7 DQ6 DQ5 DQ4 DQ3 28 - 600 PDIP FEATURES • 25ns, 35ns and 45ns Access Times • STORE to Nonvolatile Elements Initiated by Hardware • RECALL to SRAM Initiated by Hardware or Power Restore • Automatic STORE Timing • 10mA Typical I CC at 200ns Cycle Time • Unlimited READ, WRITE and RECALL Cycles • 1,000,000 STORE Cycles to Nonvolatile Ele- ments • 100-Year Data Retention over Full Industrial Temperature Range • Commercial and Industrial Temperatures |
Nº de peça semelhante - STK20C04-W25 |
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Descrição semelhante - STK20C04-W25 |
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