PDF STK20C04 Data sheet ( Hoja de datos )

Número de pieza	STK20C04
Descripción	CMOS nvSRAM High Performance 512 x 8 Nonvolatile Static RAM
Fabricantes	ETC
Logotipo
Hay una vista previa y un enlace de descarga de STK20C04 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas
No Preview Available ! STK20C04 STK20C04 CMOS nvSRAM High Performance 512 x 8 Nonvolatile Static RAM FEATURES • 30, 35 and 45ns Access Times • 15, 20 and 25ns Output Enable Access • Unlimited Read and Write to SRAM • Hardware STORE Initiation • Automatic STORE Timing • 105 STORE cycles to EEPROM • 10 year data retention in EEPROM • Automatic RECALL on Power Up • Hardware RECALL Initiation • Unlimited RECALL cycles from EEPROM • Single 5V±10% Operation • Commercial and Industrial Temperatures • Available in 600 mil PDIP package DESCRIPTION The Simtek STK20C04 is a fast static RAM (30, 35, 45ns), with a nonvolatile electrically-erasable PROM (EEPROM) 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 EEPROM. Data may easily be transferred from the SRAM to the EEPROM (STORE), or from the EEPROM to the SRAM (RECALL) using the NE pin. It combines the high performance and ease of use of a fast SRAM with nonvolatile data integrity. The STK20C04 features the industry standard pinout for nonvolatile RAMs in a 28-pin 600 mil plastic DIP. LOGIC BLOCK DIAGRAM EEPROM ARRAY 64 X 64 STORE A3 A4 STATIC RAM RECALL A5 ARRAY A6 64 X 64 A7 A8 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 COLUMN I/O COLUMN DECODER A0 A1 A2 PIN CONFIGURATIONS NE NC A7 A6 A5 A4 A3 A2 A1 A0 DQ 0 DQ 1 DO 2 VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 VCC 27 W 26 NC 25 A 8 24 NC 23 NC 22 G 21 NC 20 E 19 DQ 7 18 DQ 6 17 DQ 5 16 DQ 4 15 DQ 3 28 - 600 PDIP STORE/ RECALL CONTROL G NE E W PIN NAMES A0 - A8 W Address Inputs Write Enable DQ0 - DQ7 E Data In/Out Chip Enable G Output Enable NE Nonvolatile Enable VCC Power (+5V) VSS Ground 2-39 1 page NONVOLATILE MEMORY OPERATION STK20C04 MODE SELECTION EW HX LH LL LH LL LL LH G X L X L H L H NE X H H L L L X MODE Not Selected Read RAM Write RAM Nonvolatile RECALLn Nonvolatile STORE No operation POWER Standby Active Active Active ICC2 Active STORE CYCLES #1 & #2 SYMBOLS NO. #1 #2 Alt. PARAMETER (VCC = 5.0V ± 10%) MIN MAX UNITS 22 tWLQXp 23 tWLNHq 24 tGHNL 25 26 tNLWL 27 tELWL tELQXS tELNHS tGHEL tNLEL tSTORE tWC STORE Cycle Time STORE Initiation Cycle Time Output Disable Set-up to NE Fall Output Disable Set-up to E Fall NE Set-up Chip Enable Set-up 10 ms 45 ns 0 ns 0 ns 0 ns 0 ns 28 tWLEL Write Enable Set-up 0 ns Note: n: An automatic RECALL also takes place at power up, starting when VCC exceeds 3.8V, and taking tRECALL from the time at which VCC exceeds 4.5V. VCC must not drop below 3.8V once it has exceeded it for the RECALL to function properly. Note o: If E is low for any period of time in which W is high while G and NE are low, then a RECALL cycle may be initiated. Note p: Measured with W and NE both returned high, and G returned low. Note that STORE cycles are inhibited/aborted by VCC < 3.8V (STORE inhibit). Note q: Once tWC has been satisfied by NE, G, W and E, the STORE cycle is completed automatically. Any of NE, G, W or E may be used to terminate the STORE initiation cycle. STORE CYCLE #1: W CONTROLLEDo NE G 24 26 tGHNL tNLWL W 27 E tELWL DQ (Data Out) HIGH IMPEDANCE STORE CYCLE #2: E CONTROLLEDo 26 tNLEL NE 25 tGHEL G 28 W tWLEL E DQ (Data Out) HIGH IMPEDANCE 2-43 23 tWLNH 22 tWLQX 23 tELNHS 22 tELQXS 5 Page

Páginas	Total 8 Páginas
PDF Descargar	[ Datasheet STK20C04.PDF ]

Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
STK20C04	CMOS nvSRAM High Performance 512 x 8 Nonvolatile Static RAM	ETC

Número de pieza	Descripción	Fabricantes
SLA6805M	High Voltage 3 phase Motor Driver IC.	Sanken
SDC1742	12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.	Analog Devices

DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.

DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar