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M41ST85W Datenblatt (PDF) - STMicroelectronics

M41ST85W Datasheet PDF - STMicroelectronics
Teilenummer M41ST85W
Download  M41ST85W Download

Filegröße   530.95 Kbytes
Page   34 Pages
Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics
Bauteilbeschribung 5.0 OR 3.0V, 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR

M41ST85W Datasheet (PDF)

Go To PDF Page Download Datenblatt
M41ST85W Datasheet PDF - STMicroelectronics

Teilenummer M41ST85W
Download  M41ST85W Click to download

Filegröße   530.95 Kbytes
Page   34 Pages
Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics
Bauteilbeschribung 5.0 OR 3.0V, 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR

M41ST85W Datenblatt (HTML) - STMicroelectronics

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M41ST85W Produktdetails

SUMMARY DESCRIPTION

The M41ST85Y/W Serial TIMEKEEPER®/Controller SRAM is a low power 512-bit, static CMOS SRAM organized as 64 words by 8 bits. A built-in 32.768 kHz oscillator (external crystal controlled) and 8 bytes of the SRAM (see Table 2., page 14) are used for the clock/calendar function and are configured in binary coded decimal (BCD) format.



FEATURES SUMMARY

■ 5.0 OR 3.0V OPERATING VOLTAGE

■ SERIAL INTERFACE SUPPORTS I2C BUS(400 KHz)

■ NVRAM SUPERVISOR FOR EXTERNAL LPSRAM

■ OPTIMIZED FOR MINIMAL INTERCONNECT TO MCU

■ 2.5 TO 5.5V OSCILLATOR OPERATING VOLTAGE

■ AUTOMATIC SWITCH-OVER AND DESELECT CIRCUITRY

■ CHOICE OF POWER-FAIL DESELECT VOLTAGES

– M41ST85Y: VCC= 4.5 to 5.5V; 4.20V ≤VPFD ≤4.50V

– M41ST85W: VCC= 2.7 to 3.6V; 2.55V ≤VPFD ≤2.70V

■ 1.25V REFERENCE (for PFI/PFO)

■ COUNTERS FOR TENTHS/HUNDREDTHS OF SECONDS, SECONDS, MINUTES, HOURS, DAY, DATE, MONTH, YEAR, AND

CENTURY

■ 44 BYTES OF GENERAL PURPOSE RAM

■ PROGRAMMABLE ALARM AND INTERRUPT FUNCTION (VALID EVEN DURING BATTERY BACK-UP MODE)

■ WATCHDOG TIMER

■ MICROPROCESSOR POWER-ON RESET

■ BATTERY LOW FLAG

■ POWER-DOWN TIMESTAMP (HT BIT)

■ ULTRA-LOW BATTERY SUPPLY CURRENT OF 500nA (MAX)

■ PACKAGING INCLUDES A 28-LEAD SOIC AND SNAPHAT® TOP (to be ordered separately)

■ SOIC SNAPHAT PACKAGE PROVIDES DIRECT CONNECTION FOR A SNAPHAT TOP WHICH CONTAINS THE BATTERY

AND CRYSTAL

■ SOIC EMBEDDED CRYSTAL PACKAGE (MX) OPTION

Fi

Fi




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Über STMicroelectronics


Stmicroelectronics ist ein multinationaler Elektronik- und Halbleiterhersteller mit Sitz in Genf, Schweiz.

Das Unternehmen bietet eine breite Palette von Produkten an, darunter Mikrocontroller, Sensoren, Stromverstärker und integrierte Schaltkreise für verschiedene Anwendungen in den Märkten Automobil-, Industrie- und Verbrauchermärkte.

STMICROELECTRONICS wurde 1987 gegründet und ist in über 100 Ländern betrieben und ist eines der größten Halbleiterunternehmen der Welt.

*Diese Informationen dienen nur zu allgemeinen Informationszwecken. Wir haften nicht für Verluste oder Schäden, die durch die oben genannten Informationen verursacht werden.




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