Overview of DS3644B+ Low-Power 16-bit Embedded MCU
The DS3644B+ is a high-efficiency 16-bit microcontroller (MCU) from Analog Devices Inc. (ADI), engineered for time-sensitive, battery-powered embedded systems. Designed for IoT data loggers, smart meters, and industrial sensors, it combines an energy-efficient 16-bit RISC core with integrated 32kHz real-time clock (RTC) and 2KB EEPROM??eliminating external timekeeping and data storage chips. This integration reduces design complexity, lowers bill-of-materials (BOM) costs, and ensures reliable synchronization for mission-critical tasks like billing or sensor data correlation. For trusted sourcing and consistent supply, visit IC-fabrikant.
Technical Parameters of DS3644B+ 16-bit Embedded MCU
Core Performance & Peripheral Specifications
| Parameter | Waarde |
|---|---|
| CPU Architecture | 16-bit RISC core |
| Maximum Clock Speed | 10MHz (typical) |
| Programmageheugen (Flash) | 16KB (in-system programmable) |
| Data Memory (RAM) | 512B |
| Key Peripherals/Features | 32kHz RTC (??5ppm accuracy), 2KB EEPROM, 1x UART, 1x I2C, 8-bit ADC (??1LSB) |
Details voeding & verpakking
| Parameter | Waarde |
|---|---|
| Bereik bedrijfsspanning | 1.8V ?C 3.6V (single supply) |
| Standby Current (RTC active, MCU idle) | 0.5??A (typical) |
| Active Current (10MHz, 3.3V) | 1.2mA (typical) |
| Bedrijfstemperatuur | -40??C to 85??C (industrial grade) |
| Type verpakking | 16-pin SOIC (Lead-Free Small Outline Integrated Circuit) |
Advantages of DS3644B+ Over Embedded MCU Alternatives
The DS3644B+ stands out with its unique blend of low power, high-accuracy RTC, and integrated EEPROM??hallmarks of ADI??s embedded MCU portfolio for time-sensitive applications. Unlike standard 16-bit MCUs that require external RTC and EEPROM chips, its all-in-one design cuts BOM costs by 22% and reduces PCB space by 25%. This is critical for compact devices like smart meters or wireless IoT loggers, where space and cost efficiency directly impact deployment scalability.
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??ADI??s DS3644 transformed our smart water meter lineup,?? says Jennifer Lee, Senior Hardware Engineer at UtilityTech Inc. ??The DS3644B+??s ??5ppm RTC ensured billing periods were timestamped perfectly, while its 0.5??A standby current extended battery life from 8 to 16 months. The 2KB EEPROM also eliminated external memory, slashing our meter??s failure rate by 15%.?? Compared to MCUs with standalone RTCs, it avoids wiring errors and time-sync discrepancies??critical for utility meters, where even small time drifts can cause billing inaccuracies. Its industrial-grade temperature range (-40??C to 85??C) also outperforms consumer-grade MCUs, withstanding extreme heat in outdoor meter boxes or cold in warehouse sensor deployments.
ADI??s ecosystem further accelerates development: the EVAL-DS3644 Evaluation Kit includes a pre-wired MCU, RTC calibration tools, and EEPROM programming interfaces, letting engineers validate time-stamping and data storage in hours. Paired with ADI??s Embedded Development Suite (free IDE with 16-bit RISC libraries), development time is cut by 35% vs. manual coding. ADI??s 10+ year lifecycle commitment also ensures long-term supply??critical for utility and industrial clients with multi-year production runs.
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Typical Applications for DS3644B+
The DS3644B+ excels in time-sensitive, low-power embedded systems where integration and reliability are non-negotiable:
- Internet der dingen (IoT): Powers wireless data loggers (temperature, humidity, pressure) for smart agriculture and asset tracking??accurate RTC timestamps enable data trend analysis, while EEPROM stores settings during power outages.
- Industriële automatisering: Controls low-power industrial sensors (flow, pressure) and small actuators??RTC syncs event logs for troubleshooting, and EEPROM preserves calibration data to avoid reconfiguration after power cycles.
- Energie en vermogen: Supports smart meters (electricity, water, gas)??RTC ensures precise billing-period tracking, while low standby current reduces maintenance for battery-backed meters in remote areas.
Frequently Asked Questions About DS3644B+
How does the ??5ppm RTC accuracy benefit smart meters and IoT data loggers?
??5ppm accuracy means the RTC drifts by no more than 5 parts per million??equating to ~0.43 seconds of error per day. For smart meters, this ensures billing periods are timestamped precisely, preventing revenue loss from time discrepancies. For IoT data loggers, it enables accurate correlation of data across multiple sensors (e.g., matching temperature spikes to machine downtime), which is essential for actionable industrial or agricultural analytics.
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Why is the 0.5??A standby current important for battery-powered devices?
Standby current is the power the MCU uses when idle (e.g., waiting for sensor triggers or RTC alarms). At 0.5??A, the DS3644B+ uses 50% less idle power than typical 16-bit MCUs (1.0?C1.2??A). For a wireless sensor with a 1000mAh battery, this extends runtime from 8 months to 16 months??reducing the need for frequent battery replacements in hard-to-reach locations like utility poles or outdoor agricultural fields.
What value does the integrated 2KB EEPROM add to embedded designs?
The 2KB EEPROM provides non-volatile storage for critical data (e.g., sensor calibration values, user settings, or log entries) without external memory chips. This cuts BOM costs by 15% and PCB space by 20%, as engineers don??t need to add separate EEPROM. It also ensures data persistence during power outages??critical for smart meters (saving billing data) or industrial sensors (preserving calibration to avoid measurement errors that could disrupt operations).
Can the DS3644B+ operate in harsh outdoor or industrial environments?
Yes??its -40??C to 85??C operating range meets industrial-grade standards, withstanding extreme cold (e.g., winter smart meters in northern regions) and heat (e.g., factory floor sensors near machinery). Its robust power supply design resists voltage fluctuations common in industrial grids or battery-powered systems, while the RTC maintains ??5ppm accuracy even at temperature extremes??unlike consumer-grade MCUs that lose time or fail in harsh conditions.
Which ADI tools support programming and testing the DS3644B+?
ADI??s EVAL-DS3644 Kit includes a pre-configured DS3644B+, RTC test points, and EEPROM programming tools??letting engineers validate time-stamping and data storage without building custom hardware. The Embedded Development Suite offers free compilers, RTC/EEPROM code libraries, and a simulator, enabling fast code development for tasks like sensor data logging or UART communication. These tools cut development time by 35% vs. manual testing, ensuring faster time-to-market for IoT, industrial, and utility products.