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M41T93SQA6E Datasheet (PDF) - STMicroelectronics

M41T93SQA6E Datasheet PDF - STMicroelectronics
Part # M41T93SQA6E
Download  M41T93SQA6E Download

File Size   416.71 Kbytes
Page   49 Pages
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics
Description Serial SPI bus RTC with battery switchover

M41T93SQA6E Datasheet (PDF)

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M41T93SQA6E Datasheet PDF - STMicroelectronics

Part # M41T93SQA6E
Download  M41T93SQA6E Click to download

File Size   416.71 Kbytes
Page   49 Pages
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics
Description Serial SPI bus RTC with battery switchover

M41T93SQA6E Datasheet (HTML) - STMicroelectronics

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M41T93SQA6E Product details

Description

The M41T93 is a low power Serial SPI Bus Real Time Clock with a built-in 32.768kHz oscillator (external crystal-controlled for the QFN16 package, and embedded crystal for the SOX18 package). Eight bytes of the Register Map (see Table 3 on page 18) are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. An additional 17 bytes of the Register Map provide status/control of the two Alarms, Watchdog, 8-Bit Counter, and Square Wave functions. An additional seven bytes are made available as user SRAM.



Features

■ Ultra-low battery supply current of 365nA

■ Factory calibrated accuracy ±5PPM guaranteed after 2 reflows (SOX18)

  – Much better accuracies achievable using built-in programmable analog and digital calibration circuits

■ 2.0V to 5.5V clock operating voltage

■ Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century

■ Automatic switch-over and reset output circuitry (fixed reference)

  –M41T93S: VCC= 3.0V to 5.5V (2.85V≤VRST ≤ 3.00V)

  –M41T93R: VCC= 2.7V to 5.5V (2.55V≤VRST ≤ 2.70V)

  –M41T93Z: VCC= 2.38V to 5.50V (2.25V≤VRST≤2.38V)

■ Compatible with SPI busserial interface (positive clock SPI modes)

■ Programmable alarm with interrupt function (valid even during battery back-up mode)

■ Optional 2nd programmable alarm available

■ Square wave output (defaults to 32kHz on power-up)

■ RESET (RST) output

■ Watchdog timer

■ Programmable 8-bit counter/timer

■ 7 bytes of battery-backed user SRAM

■ Battery low flag

■ Power-down timestamp (HT bit)

■ Low operating current of 80µA

■ Oscillator stop detection

■ Battery or Super-cap™ back-up

■ Operating temperature of –40°C to +85°C

■ Package options include:

  – a 16-lead QFN or an 18-lead embedded crystal SOIC

■ RoHS compliance: lead-free components are compliant with the RoHS directive




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About STMicroelectronics


STMicroelectronics is a multinational electronics and semiconductor manufacturer based in Geneva, Switzerland.

The company offers a wide range of products including microcontrollers, sensors, power amplifiers, and integrated circuits for various applications in the automotive, industrial, and consumer markets.

Founded in 1987, STMicroelectronics has operations in over 100 countries and is one of the largest semiconductor companies in the world.

*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.




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