PDF STK17TA8 Data sheet ( Hoja de datos )

Número de pieza	STK17TA8
Descripción	128Kx8 Autostore nvSRAM
Fabricantes	Simtek
Logotipo
Hay una vista previa y un enlace de descarga de STK17TA8 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas
No Preview Available ! www.DataSheet4U.com STK17TA8 128Kx8 Autostore nvSRAM With Real-Time Clock FEATURES • nvSRAM Combined With Integrated Real-Time Clock Functions (RTC, Watchdog Timer, Clock Alarm, Power Monitor) • Capacitor or Battery Backup for RTC • 25, 45 ns Read Access & R/W Cycle Time • Unlimited Read/Write Endurance • Automatic Non-volatile STORE on Power Loss • Non-Volatile STORE Under Hardware or Software Control • Automatic RECALL to SRAM on Power Up • Unlimited RECALL Cycles • 200K STORE Cycles • 20-Year Non-volatile Data Retention • Single 3 V + 20%, -10% Power Supply • Commercial and Industrial Temperatures • Small Footprint SSOP Package (RoHS- Compliant) DESCRIPTION The Simtek STK17TA8 combines a 1Mb non-volatile static RAM (nvSRAM) with a full-featured real-time clock in a reliable, monolithic integrated circuit. The 1Mbit nvSRAM is a fast static RAM with a non- volatile Quantum Trap storage element included with each memory cell. The SRAM provides the fast access & cycle times, ease of use and unlimited read & write endurance of a normal SRAM. Data transfers automatically to the non-volatile storage cells when power loss is detected (the STORE operation). On power up, data is automatically restored to the SRAM (the RECALL operation). Both STORE and RECALL operations are also available under software control. The real time clock function provides an accurate clock with leap year tracking and a programmable, high accuracy oscillator. The Alarm function is pro- grammable for one-time alarms or periodic minutes, hours, or days alarms. There is also a programma- ble watchdog timer for processor control. BLOCK DIAGRAM A5 A6 A7 A8 A9 A12 A13 A14 A15 A16 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 Quantum Trap 1024 X 1024 STATIC RAM ARRAY 1024 X 1024 STORE RECALL COLUMN I/O COLUMN DEC A0 A1 A2 A3 A4 A10 A11 VCC VCAP POWER CONTROL STORE/ RECALL CONTROL VRTCbat VRTCcap HSB SOFTWARE DETECT A15 – A0 RTC MUX X1 X2 INT A16 – A0 G E W This product conforms to specifications per the terms of Simtek standard warranty. The product has completed Simtek internal qualification testing and has reached production status. 1 Document Control #ML0025 Rev 1.5 March 2007 1 page RTC DC CHARACTERISTICS STK17TA8 Symbol Parameter IBAK VRTCbat VRTCcap RTC Backup Current RTC Battery Pin Voltage RTC Capacitor Pin Voltage tOSCS RTC Oscillator time to start Commercial Min Max — 300 1.8 3.3 1.2 2.7 — 10 —5 Industrial Min Max — 350 1.8 3.3 1.2 2.7 — 10 —5 Units nA V V sec sec Notes From either VRTCcap or VRTCbat Typical = 3.0 Volts during normal operation Typical = 2.4 Volts during normal operation @ MIN Temperature from Power up or Enable @ 25°C from Power up or Enable RTC RECOMMENDED COMPONENT CONFIGURATION X1 X2 Recommended Values Y1 = 32.768 KHz RF = 10M Ohm C1 = 0 C2 = 56 pF Figure 3. RTC Component Configuration Document Control #ML0025 Rev 1.5 March 2007 5 5 Page MODE SELECTION STK17TA8 EW G A15-A0 Mode I/O Power Notes HX LH LL LH LH X X Not Selected Output High Z Standby L X Read SRAM Output Data Active X X Write SRAM Input Data Active 0x4E38 Read SRAM Output Data 0xB1C7 Read SRAM Output Data L 0x83E0 0x7C1F Read SRAM Read SRAM Output Data Output Data 0x703F Read SRAM Output Data Active ICC2 0x8FC0 Nonvolatile Store Output High Z 0x4E38 Read SRAM Output Data 0xB1C7 Read SRAM Output Data L 0x83E0 0x7C1F Read SRAM Read SRAM Output Data Output Data Active 0x703F Read SRAM Output Data 0x4C63 Nonvolatile Recall Output High Z q,r,s q,r,s Notes q: The six consecutive addresses must be in the order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle. r: While there are 17 addresses on the STK17TA8, only the lower 16 are used to control software modes s: I/O state depends on the state of G. The I/O table shown assumes G low Document Control #ML0025 Rev 1.5 March 2007 11 11 Page

Páginas	Total 28 Páginas
PDF Descargar	[ Datasheet STK17TA8.PDF ]

Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
STK17TA8	128Kx8 Autostore nvSRAM	Simtek

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