Product overview
概要
The M41T01 is a low-power serial real-time clock (RTC). The built-in 32.768 kHz oscillator circuit works with an external crystal and does not need any load capacitors.
The M41T01 clock has a built-in power sense circuit which detects power failures and automatically switches to the battery supply during power failures. 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 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 M41T01 is supplied in an 8-lead plastic small outline package.
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All features
- 2.0 to 5.5 V clock operating voltage
- Counters for seconds, minutes, hours, day, date, month, years, and century
- Software clock calibration
- Automatic switchover and deselect circuitry
- Ultra-low battery supply current of 800 nA
- Low operating current of 300 μA
- Battery and capacitor backup
- Battery backup not recommended for 3.0 V applications (capacitor backup only)
- Operating temperature of –40 to 85 °C
- Automatic leap year compensation
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STMicroelectronics - M41T01
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHSコンプライアンスグレード | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| M41T01M6F | Active 交換品交換品 | SO-8 | Industrial | Ecopack3 | - | - |
(**) st.comで提供している材料宣誓書は、パッケージ･ファミリ内で最も一般的に使用されているパッケージに基づく汎用ドキュメントの場合があります。そのため、特定の製品では100%正確ではない可能性があります。特定の製品情報については、セールスサポートまでお問い合わせください
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Sample & Buy
| Part Number | 製品ステータス | Budgetary Price (US$)*/Qty | STから購入 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | NVRAM size (B) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小 | 最大 | ||||||||||||||
| M41T01M6F | | | distributors 販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください |
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M41T01M6F Active
販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください
（*）概算用の参考価格（US$）です。現地通貨でのお見積りについては、STのセールス･オフィスまたは販売代理店までお問い合わせください。