Product overview
Description
The M41T00 is a low power serial real-time clock with a built-in 32.768 kHz oscillator (external crystal controlled). Eight bytes of the RAM are used for the clock/calendar function and are configured in binary-coded decimal (BCD) format. Addresses and data are transferred serially via a two-line bidirectional bus. The built-in address register is incremented automatically after each WRITE or READ data byte. The M41T00 clock has a built-in power sense circuit which detects power failures and automatically switches to the battery supply during power failures. The energy needed to sustain the RAM and clock operations can be supplied from a small lithium coin cell.Typical data retention time is in excess of 5 years with a 50 mA/h 3 V lithium cell.
The M41T00 is supplied in an 8-lead plastic small outline package.
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All features
- For new designs use M41T00S
- Counters for seconds, minutes, hours, day, month, years, and century
- 32 kHz crystal oscillator integrating load capacitance (12.5 pF) providing exceptional oscillator stability and high crystal series resistance operation
- Serial interface supports I2C bus (100 kHz protocol)
- Ultra low battery supply current of 0.8 μA (typ at 3 V)
- 2.0 to 5.5 V clock operating voltage
- Automatic switchover and deselect circuitry (for 3 V application select M41T00S datasheet)
- Software clock calibration to compensate crystal deviation due to temperature
- Automatic leap year compensation
- Operating temperature of -40 to 85 °C
Circuit Diagram
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All tools & software
All resources
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Product Specifications (1)
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| 19 Jun 2015 | 19 Jun 2015 |
Application Notes (5 of 9)
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| 13 Sep 2018 | 13 Sep 2018 | |||
| 15 Feb 2015 | 15 Feb 2015 | |||
| 19 Mar 2021 | 19 Mar 2021 | |||
| 14 May 2015 | 14 May 2015 | |||
| 19 Mar 2021 | 19 Mar 2021 | |||
| 03 Apr 2013 | 03 Apr 2013 | |||
| 13 Sep 2018 | 13 Sep 2018 | |||
| 13 Sep 2018 | 13 Sep 2018 | |||
| 21 Jul 2017 | 21 Jul 2017 |
Brochures (1)
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| 26 Feb 2020 | 26 Feb 2020 |
Product Certifications (1)
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| 24 Mar 2016 | 24 Mar 2016 |
EDA Symbols, Footprints and 3D Models
STMicroelectronics - M41T00
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Symbols
Footprints
3D models
All resources
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IBIS models (1)
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| ZIP | 11 Dec 2020 | 11 Dec 2020 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| M41T00M6F | Active | SO-8 | Industrial | Ecopack1 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | NVRAM size (B) | Country of Origin | Budgetary Price (US$)*/Qty | More info | ||
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| min | max | |||||||||||||
| M41T00M6F | 4 distributors | Buy Direct | Active | EAR99 | NEC | Tape And Reel | SO-8 | -40 | 85 | - | MOROCCO | 1.4064 / 1k | ||
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
