DS3231MZ+TRL - 5ppm I2C RTC | Maxim Integrated | SOIC-8
部品番号: DS3231MZ+TRL ✓ 生産中DS3231MZ+TRL 概要
A real-time clock, or RTC, is a clock-and-calendar IC that keeps track of time independently of the system processor. The DS3231M family belongs to the broader timekeeping IC and clock-and-timing semiconductor hierarchy. Its internal MEMS oscillator replaces a conventional crystal resonator, reducing external components and improving manufacturing consistency. The I2C interface allows a host microcontroller or processor to read and write the time, calendar, alarm, and temperature registers through two serial wires.
The DS3231MZ+TRL is specified as a 5ppm real-time clock, making it suitable for systems requiring stable wall-clock time across temperature changes. Its low-cost MEMS architecture is useful in embedded products where board space, assembly simplicity, and backup timekeeping matter. The integrated temperature sensor supports calibration-related monitoring and is also used by the device for timekeeping compensation. Because the device includes a battery input, it can continue operating from a backup source when the primary supply is removed.
The DS3231M family is commonly used in industrial controllers, embedded instruments, access-control terminals, data-acquisition equipment, and consumer products that need date and time information after power cycling. The I2C interface makes it straightforward to connect to host processors while the internal oscillator removes the need for a separate crystal and most associated load-capacitor design work. The 8-pin SOIC package also supports conventional surface-mount assembly and automated manufacturing.
When designing around the DS3231MZ+TRL, verify the exact pin mapping from the manufacturer pin-description table and connect the backup source according to the battery configuration used by the design. Confirm I2C pull-up values, supply sequencing, and decoupling against the device electrical characteristics. Use the device’s alarm, square-wave, and temperature-register functions only when their timing and electrical limits are understood. The manufacturer’s DS3231M product page and the DS3231MZ+TRL technical documentation are the appropriate references for final schematic and layout decisions.
This product page combines the manufacturer’s DS3231M family information with verified distributor listings, application-oriented design guidance, and same-package replacement context. It is intended to help engineers evaluate accuracy, backup operation, interface requirements, and board-level implementation before committing a DS3231MZ+TRL to a production design.
ドロップイン代替品: DS3231MZ+TRL — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: DS3231MZ+TRL （同一形状・フットプリント） — 相違点: Mounting Type, Interface, Operating Temperature Range, Package, Product Type.
DS3231MZ+
✅ ドロップイン価格はお問い合わせください
データシートを見る →DS3232MZ+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
DS3231SN#
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →DS3231SY
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
DS3231SZ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
DS3231MZ+TRL 仕様
| Product Type | I2C real-time clock and calendar IC |
| Timekeeping Accuracy | 5 ppm |
| インターフェース | I2C, 2-wire serial |
| Supply Voltage Range | 2.3 V to 5.5 V |
| 動作温度範囲 | -40C to +85C |
| Oscillator Technology | Internal MEMS resonator |
| Backup Function | Battery input maintains timekeeping during main-power interruption |
| Integrated Temperature Sensor | Yes |
| パッケージ | 8-SOIC, 0.154 inch width, 3.90 mm width |
| 実装タイプ | Surface mount |
| Calendar Features | Clock and calendar |
| Battery Input | Yes |
DS3231MZ+TRL 8-soic, 0.154 inch width, 3.90 mm width ピン配置ガイド
DS3231MZ+TRL (8-soic, 0.154 inch width, 3.90 mm width パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: DS3231MZ+TRL.
詳細は データシート をご参照ください。
主な用途
DS3231MZ+TRL の用途: 6 件s: Industrial Control Systems, Battery-Backed Data Loggers, Access-Control and Security Terminals, Precision Measurement Instruments, Embedded Sensors and IoT Nodes, Consumer Electronics and Appliances.
Industrial Control Systems
The DS3231MZ+TRL fits industrial controllers that need a stable time base across a -40C to +85C operating range. Its 5ppm accuracy supports consistent timestamping of operating events, while the internal MEMS resonator removes the external crystal and load-capacitor network. The I2C interface allows the controller to read the clock and calendar without dedicating many GPIO pins. Use the battery input to preserve timestamps during brief supply interruptions and verify the final backup-battery circuit against the manufacturer electrical requirements.
おすすめ
Battery-Backed Data Loggers
The DS3231MZ+TRL is appropriate for data loggers that must retain time and date information when the primary supply disappears. The 5ppm specification supports dependable event ordering, and the integrated battery input provides a path to maintain the clock during power transitions. Its I2C bus keeps the connection compact in small boards. Design the backup path to limit current draw, and use the device’s temperature register and calibration features only after confirming their limits in the manufacturer documentation.
おすすめ
Access-Control and Security Terminals
The DS3231MZ+TRL supports access-control terminals that require date and time records to remain useful after a power interruption. Its 5ppm timing specification is suitable for event logging, while the I2C interface allows a host processor to retrieve calendar information through a compact bus. The internal MEMS oscillator also simplifies the board by removing a discrete crystal resonator. Confirm the alarm or square-wave output requirements and validate the backup-battery behavior for each terminal architecture.
おすすめ
Precision Measurement Instruments
The DS3231MZ+TRL can timestamp measurements in instruments where consistent event timing is required across temperature. Its 5ppm accuracy, 2.3V to 5.5V operating range, and integrated MEMS resonator make it suitable for compact measurement products. The I2C interface supports direct connection to precision analog front ends and host controllers. Use the manufacturer’s register and calibration details when correlating RTC timestamps with sampled sensor data, especially if long-term drift correction is required.
おすすめ
Embedded Sensors and IoT Nodes
The DS3231MZ+TRL is suitable for IoT sensor nodes that need timestamped environmental or motion events without a network time source. Its I2C interface shares two bus conductors with the host, and the internal MEMS timing element minimizes external oscillator components. The 5ppm specification provides a more stable local time reference than a simple software counter, while the battery backup preserves timestamps during power cycling. Ensure the host firmware handles register coherency and uses the device’s documented I2C timing.
おすすめ
Consumer Electronics and Appliances
The DS3231MZ+TRL can provide date and time in appliances and consumer products that display schedules, record events, or enforce timed behavior. The integrated MEMS resonator and narrow 8-SOIC package support compact surface-mount layouts, and the I2C interface avoids using many host-controller pins. The backup input helps maintain timekeeping during short power interruptions. Confirm the operating-temperature requirement for the product enclosure and evaluate battery leakage over the expected service life before finalizing the design.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: DS3231MZ+TRL — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | DS3231MZ+ | DS3232MZ+ | DS3231SN | DS3231SY | DS3231SZ |
|---|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 |
| Product Type | I2C real-time clock and calendar | I2C real-time clock and calendar | I2C real-time clock and calendar | DS3231M-family RTC | DS3231M-family RTC | DS3231M-family RTC |
| Interface | I2C, 2-wire serial | I2C, 2-wire serial | I2C, 2-wire serial | I2C, 2-wire serial | I2C, 2-wire serial | I2C, 2-wire serial |
主な差別化要因
- MEMS timing architecture （vs DS3231M+TRL)
- Same-package family alternative （vs DS3231MZ+)
- Compact narrow SOIC footprint （vs DS3231M+TRL)
設計ノート
Place the I2C pull-up resistors and the device decoupling capacitor close to the associated pins. Route SDA and SCL away from noisy switching nodes and maintain the pull-up values recommended by the manufacturer and host-device requirements. Use a clean ground reference and keep the backup-battery connection physically separate from high-current switching paths to reduce transient coupling.
The DS3231MZ+TRL operates from 2.3V to 5.5V and supports battery-backed timekeeping. Validate the main-supply ramp, backup-source connection, and load-sharing behavior before production. Use the manufacturer’s power-consumption and battery-current figures to size the backup source, especially for systems that remain unpowered for long periods.
Do not substitute an RTC solely because it uses I2C or has a similar accuracy rating. The replacement must have the same 8-SOIC footprint, pin functions, supply range, backup behavior, and required alarm or square-wave outputs. The DS3231M+TRL comparison lists a larger SOIC package, so using it directly would require a PCB change.
Keep the MEMS RTC away from heat sources, regulators, and inductors when possible, because temperature gradients can affect timekeeping behavior and the temperature-related calibration function. Follow the manufacturer’s land-pattern and exposed-thermal guidance in the package drawing. Validate the assembled board with timekeeping tests across the intended environmental range.
コンプライアンス情報
The verified product information identifies the manufacturer and family but does not explicitly state the requested compliance statuses. Check the current manufacturer product page and environmental declaration for the exact ordering code.
