DS3231MZ+TRL - 5ppm I2C RTC | Maxim Integrated | SOIC-8
MPN： DS3231MZ+TRL ✓ 啟用中DS3231MZ+TRL 概覽
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.
直接替換替代品，適用於 DS3231MZ+TRL — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： DS3231MZ+TRL （相同外形與佔位） — 差異在於 Mounting Type, Interface, Operating Temperature Range, Package, Product Type.
DS3231MZ+
✅ 直接替換聯絡詢價
查看資料表 →DS3232MZ+
✅ 直接替換📋 參考替代品（不在目錄中）
DS3231SN#
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DS3231SY
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DS3231SZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DS3231MZ+TRL 規格
| Product Type | I2C real-time clock and calendar IC |
| Timekeeping Accuracy | 5 ppm |
| 介面 | I2C, 2-wire serial |
| Supply Voltage Range | 2.3 V to 5.5 V |
| 工作溫度範圍 | -40C to +85C |
| Oscillator Technology | Internal MEMS resonator |
| Backup Function | Battery input maintains timekeeping during main-power interruption |
| Integrated Temperature Sensor | Yes |
| 封裝 | 8-SOIC, 0.154 inch width, 3.90 mm width |
| 安裝類型 | Surface mount |
| Calendar Features | Clock and calendar |
| Battery Input | Yes |
DS3231MZ+TRL 8-soic, 0.154 inch width, 3.90 mm width 腳位配置指南
DS3231MZ+TRL（8-soic, 0.154 inch width, 3.90 mm width 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： DS3231MZ+TRL.
請參閱 資料表 以查看完整腳位配置。
典型應用
DS3231MZ+TRL 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 DS3231MZ+TRL — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- MEMS timing architecture (對比DS3231M+TRL)
- Same-package family alternative (對比DS3231MZ+)
- Compact narrow SOIC footprint (對比DS3231M+TRL)
設計說明
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.
合規資訊
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.
