MSP430F149IRTDT - 8MHz 60KB Flash MCU | Texas Instruments
部品番号: MSP430F149IRTDT ✓ 生産中MSP430F149IRTDT 概要
An MCU is a programmable integrated circuit containing a processor core, memory, and peripherals. The MSP430 MCU family combines a 16-bit RISC architecture with energy-conscious operating modes. In the MSP430F149, this hierarchy supports embedded control functions spanning industrial instrumentation, battery-powered sensing, communications modules, and compact data-acquisition systems where both processing capability and power efficiency are important.
The device provides 8-channel, 12-bit ADC conversion alongside a comparator for signal conditioning and threshold-based control. Its communication resources include SPI and UART, supporting connection to sensors, external converters, transceivers, and service interfaces. The verified manufacturer product information identifies the MCU as operating at 8 MHz, while the indexed technical listing specifies a 1.8 V to 3.6 V supply range and 22 I/O ports.
Memory organization is a key selection criterion: the MSP430F149IRTDT combines 60 KB of Flash program memory with 2 KB of SRAM. Flash retains firmware without a separate external memory device, while SRAM supports runtime variables, stack operations, and intermediate data handling. The indexed distributor listing additionally describes the program memory as 60 KB plus 256 bytes; the functional relationship of that auxiliary area should be confirmed against the current manufacturer datasheet before firmware partitioning.
Typical applications include low-power sensor nodes, industrial measurement equipment, serial data loggers, motor or process-control modules, and communication-enabled embedded products. The 12-bit ADC is useful for analog inputs, the comparator supports fast threshold events, and SPI or UART provides pathways to external sensors and service interfaces. Engineers should select passive values and external circuitry for the actual signal bandwidth and required measurement accuracy.
The principal design consideration is board-space and power budgeting. The 64-pin VQFNP package supports a compact implementation, but exposed-pad layout, thermal performance, and pin multiplexing still require careful PCB planning. Firmware should use the MCU's low-power modes when appropriate, and unused peripherals should be disabled to reduce overall energy consumption.
This page consolidates the verified manufacturer specifications, distributor pricing and availability, source links, application guidance, and design cautions. It also distinguishes a true pin-compatible replacement from variants that merely share the MSP430F149 device name or use a different package, helping engineers avoid incorrect substitutions.
ドロップイン代替品: MSP430F149IRTDT — 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: MSP430F149IRTDT （同一形状・フットプリント） — 相違点: Comparator, I/O Ports, Package, Power-Saving Modes, Serial Interfaces.
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストMSP430F149IRTDT 最大定格＆電気的特性
| CPU Architecture | 16-bit RISC |
| 最大クロック周波数 | 8 MHz |
| Flash Memory | 60 KB |
| Additional Flash | 256 bytes |
| SRAM | 2 KB |
| ADC Resolution | 12 bits |
| ADC Channels | 8 channels |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Ports | 22 ports |
| Serial Interfaces | SPI and UART |
| Comparator | Integrated |
| Power-Saving Modes | 5 modes |
| パッケージ | 64-pin VQFNP (RTD) |
| Package Dimensions | 9 mm x 9 mm |
| 実装タイプ | Surface mount |
| Product Type | Mixed-signal microcontroller |
MSP430F149IRTDT 9 mm x 9 mm ピン配置ガイド
MSP430F149IRTDT (9 mm x 9 mm パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: MSP430F149IRTDT.
詳細は データシート をご参照ください。
主な用途
MSP430F149IRTDT の用途: 6 件s: Battery-Powered Sensor Node, Industrial Data-Acquisition Module, Serial Data Logger, Comparator-Based Threshold Control, Embedded Communication Interface, Precision Measurement Instrument.
Battery-Powered Sensor Node
The MSP430F149IRTDT fits a battery-powered sensor node because its ultra-low-power MSP430 architecture provides five power-saving modes alongside 2 KB of SRAM and 60 KB of Flash for local firmware. The 8-channel, 12-bit ADC can acquire analog sensor signals directly, while UART or SPI connects external sensing and communication modules. Using a 1.8 V to 3.6 V operating supply simplifies design coordination with compatible low-voltage sensors. Firmware can disable unused converters and peripherals between samples, retain state in SRAM, and resume measurement on a timer or comparator event. The main design requirement is validating the sensor bandwidth and standby-current budget rather than assuming that the MCU alone determines battery life.
Industrial Data-Acquisition Module
The MSP430F149IRTDT suits compact industrial data-acquisition modules that must combine analog measurement with local control and serial data transfer. Its 8-channel, 12-bit ADC supplies eight possible analog input channels, while the 16-bit CPU operates at up to 8 MHz for sampling coordination, filtering, and configuration. The 60 KB Flash supports resident application code and calibration tables, and 2 KB of SRAM accommodates working buffers. SPI can connect to higher-speed converters or storage, whereas UART provides a straightforward service or telemetry link. Industrial implementation still requires verified operating-temperature limits, input-protection design, isolation where required, and careful grounding to prevent analog noise from entering the measurement path.
Serial Data Logger
The MSP430F149IRTDT can act as the control element in a serial data logger when storage volume is modest and power consumption matters. Its 60 KB Flash retains firmware and configuration data, while 2 KB of SRAM supports short-term buffering before records are transferred or stored externally. UART provides a direct host interface, and SPI permits connection to external nonvolatile memory or a communications module. The 8 MHz 16-bit processor is suitable for organizing timestamps, sensor records, and status flags while the five low-power modes reduce consumption between acquisition intervals. Engineering validation should include maximum write duration, retry behavior, data-loss boundaries, and the current draw of any external memory during storage operations.
Comparator-Based Threshold Control
The MSP430F149IRTDT is appropriate for threshold detection and rapid event control because it includes an integrated comparator alongside the 12-bit ADC. The comparator can monitor an analog input without requiring the main ADC conversion path, allowing firmware to react to a crossing, wake from a low-power state, or change an external control signal. UART and SPI allow the threshold controller to report events or accept configuration from a higher-level system. The 60 KB Flash and 2 KB SRAM are sufficient for event logic and small control tables. Designers must verify comparator operating conditions, input-voltage limits, switching behavior, and the exact pin multiplexing in the manufacturer datasheet before finalizing the analog front end.
Embedded Communication Interface
The MSP430F149IRTDT works as a protocol-handling or service interface in communication-enabled embedded equipment. Its SPI interface supports transfers to and from external radio, converter, or display modules, while UART provides a simple point-to-point control path. The 16-bit CPU can manage framing, status monitoring, and configuration, and the 60 KB Flash permits application firmware to be stored entirely on the MCU. Because the part is an ultra-low-power MCU with five power-saving modes, it can reduce activity during idle periods in battery-backed systems. Deployment decisions should account for bus timing, interrupt priorities, peripheral standby current, and firmware recovery if an external communications device resets or loses synchronization.
Precision Measurement Instrument
The MSP430F149IRTDT is suitable for compact measurement instruments that need moderate-resolution analog conversion and deterministic serial connectivity. The 8-channel, 12-bit ADC supports multiple sensor inputs, while the 16-bit CPU performs scaling, filtering, calibration, and status reporting. The 60 KB Flash and 2 KB SRAM provide space for firmware, configuration, and runtime buffers in a single control device. SPI may connect to a precision external converter when the application requires more than the internal ADC, and UART can provide calibration or diagnostic access. The final measurement accuracy will depend on the reference source, analog topology, layout, and calibration rather than ADC resolution alone; no unsupported accuracy percentage should be inferred from the supplied search data.
エンジニアリング参考データ: MSP430F149IRTDT — 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 |
|---|---|
| Brand | Texas Instruments |
| Package | 64-pin VQFNP (RTD), 9 mm x 9 mm |
| CPU Architecture | 16-bit RISC |
| Maximum Clock Frequency | 8 MHz |
| Flash Memory | 60 KB plus 256 bytes |
| SRAM | 2 KB |
| ADC | 8-channel, 12-bit |
| Supply Voltage | 1.8 V to 3.6 V |
| Serial Interfaces | SPI and UART |
| I/O Ports | 22 |
主な差別化要因
- Mixed-signal integration （vs General-purpose serial-interface MCU)
- Ultra-low-power control platform （vs Higher-power general-purpose MCU)
- Integrated firmware and working memory （vs External-memory MCU configuration)
設計ノート
Assign the 64-pin VQFNP RTD footprint directly from the current Texas Instruments package drawing and land-pattern data. The verified results confirm the 9 mm x 9 mm package but do not provide the complete pin table, exposed-pad dimensions, or land pattern. Confirm thermal-pad connectivity, solder-mask geometry, and paste-aperture dimensions before fabrication, and use the manufacturer's recommended footprint rather than deriving one from the generic VQFNP name.
Budget the complete 1.8 V to 3.6 V rail rather than only the MCU connection. Include startup margin for the external ADC, comparator network, communications interface, pull resistors, and any level translators. Firmware should disable unused peripherals and use the five documented low-power modes when the application permits, but measured standby and active current should be verified on assembled hardware because external circuitry can dominate the total supply demand.
Separate analog and digital return paths carefully around the eight ADC channels and the comparator input. Place input filtering and protection close to the pins, route sensitive analog nets away from SPI and UART activity, and provide a quiet ground reference for conversion and threshold measurement. The verified data does not specify the recommended ADC source impedance or layout topology, so use the manufacturer datasheet's application guidance when finalizing component values.
Do not treat MSP430F149IRTDR as a separate functional upgrade, and do not treat MSP430F149IPAGR as a drop-in replacement without a package redesign. The verified evidence does not establish a distinct pin-compatible substitute for MSP430F149IRTDT. Before any substitution, compare the complete pinout, exposed-pad requirements, memory map, ADC channels, peripheral multiplexing, supply limits, timing, and qualification conditions using current manufacturer documentation.
コンプライアンス情報
The supplied target-specific verified data does not explicitly state the MSP430F149IRTDT's RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred from generic family, industry, or related-part information.
