MSP430F1491IRTDT - 8MHz 60KB MCU | Texas Instruments
部品番号: MSP430F1491IRTDT ✓ 生産中MSP430F1491IRTDT 概要
A microcontroller is a programmable semiconductor that integrates a CPU, memory, and peripherals into one device. The MSP430F1491 belongs to the mixed-signal microcontroller family, combining general-purpose embedded control with analog measurement peripherals. Its RISC-based MSP430 architecture, 16-bit registers, and constant generators support efficient code execution for low-power embedded products.
The device provides 60 KB of Flash, including 256 bytes identified by the distributor data, and 2 KB of SRAM for firmware and working data. The 12-bit ADC enables sensor and voltage measurements, while the comparator supports threshold detection and low-power signal monitoring. SPI and UART peripherals provide interfaces to sensors, transceivers, displays, and service equipment.
Its low-power design includes active, standby, and off modes. The verified data reports 280 µA active current at 1 MHz and 2.2 V, 1.6 µA standby current, and 0.1 µA off current with RAM retention. Standby wakeup is reported in less than 6 µs, which helps reduce response delay in duty-cycled systems.
Typical applications include battery-powered instrumentation, industrial sensor nodes, data loggers, communications equipment, motor and process-control products, and portable measurement systems. The 8 MHz CPU and mixed-signal peripherals make the MCU appropriate when several analog inputs and serial interfaces must share a compact embedded platform.
Designers should provide the required bypass capacitors, route the exposed-pad thermal and ground connection according to the manufacturer datasheet, and verify that serial interface levels match the attached peripherals. The 3.3 V operating target also requires attention to input thresholds, output drive, and power-budget calculations before PCB release.
This product record combines the verified manufacturer identification with distributor package and memory details, practical application guidance, and explicit data gaps where the supplied sources do not provide complete electrical or lifecycle information. It is intended to support engineering selection rather than replace the manufacturer datasheet for production design.
ドロップイン代替品: MSP430F1491IRTDT — 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: MSP430F1491IRTDT （同一形状・フットプリント） — 相違点: Comparator, Flash Memory, Package, ADC Resolution, Supply Voltage Range.
MSP430F1491IPMR
✅ 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 →MSP430F1491IRTDT 最大定格＆電気的特性
| CPU Architecture | 16-bit MSP430 RISC |
| Maximum CPU Frequency | 8 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Flash Memory | 60 KB (60K x 8 + 256 B) |
| SRAM | 2 KB |
| ADC Resolution | 12 bit |
| Comparator | Integrated |
| Serial Interfaces | SPI and UART |
| Active Mode Current | 280 µA at 1 MHz and 2.2 V |
| Standby Mode Current | 1.6 µA |
| Off Mode Current | 0.1 µA with RAM retention |
| Power-Saving Modes | Five |
| Standby Wakeup Time | Less than 6 µs |
| パッケージ | 64-pin VQFN RTD with exposed pad |
| Package Dimensions | 9 mm x 9 mm |
MSP430F1491IRTDT 9 mm x 9 mm ピン配置ガイド
MSP430F1491IRTDT (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: MSP430F1491IRTDT.
詳細は データシート をご参照ください。
主な用途
MSP430F1491IRTDT の用途: 6 件s: Battery-Powered Sensor Node, Industrial Data Logger, Process-Control Monitor, Portable Measurement Instrument, Communications Controller, Embedded Control System.
Battery-Powered Sensor Node
MSP430F1491IRTDT fits a battery-powered sensor node because its 1.8 V to 3.6 V supply range and low-power modes support compact embedded designs. The 12-bit ADC can acquire analog sensor signals, while the comparator can provide threshold or event detection. UART or SPI can connect an external sensor, radio, or configuration interface. The verified active figure is 280 µA at 1 MHz and 2.2 V, standby is 1.6 µA, and wakeup is less than 6 µs, allowing the firmware to sleep between measurements.
おすすめ
Industrial Data Logger
MSP430F1491IRTDT is suitable for an industrial data logger that periodically records mixed-signal measurements and transfers them through a serial link. Its 60 KB Flash provides substantial firmware and configuration storage, while 2 KB SRAM supports short-term acquisition buffers and working variables. The 12-bit ADC is appropriate for transducers with moderate resolution requirements, and the UART or SPI interface can connect storage or communications hardware. Firmware must define calibration, timestamps, wear management, and data retention within the exact memory map.
おすすめ
Process-Control Monitor
MSP430F1491IRTDT can serve as the embedded controller in a process monitor because it combines an 8 MHz 16-bit CPU with a 12-bit ADC and comparator. The ADC measures process voltage or conditioned sensor outputs, while the comparator can monitor a threshold without requiring continuous software polling. SPI and UART provide connections to displays, actuators, or supervisory controllers. The 1.8 V to 3.6 V range supports low-voltage embedded systems, but analog front-end design must provide appropriate signal conditioning, protection, and grounding.
おすすめ
Portable Measurement Instrument
MSP430F1491IRTDT is a useful controller for a portable measurement instrument where low power and mixed-signal capability matter. The MCU can supervise battery status, control analog acquisition, and communicate with an external display or host. Its standby and off modes help reduce energy use between operator actions, while the less-than-6 µs wakeup specification supports responsive interaction. The 64-pin VQFN package also provides access to the device’s documented serial and mixed-signal peripherals when board space permits.
おすすめ
Communications Controller
MSP430F1491IRTDT can act as a low-power communications controller when the design needs both local control and serial connectivity. UART supports point-to-point or peripheral links, while SPI can connect to transceivers, memory, or sensors. The 8 MHz CPU provides a defined performance ceiling for protocol handling, and the 60 KB Flash supports firmware storage. Keep interrupt latency, buffer depth, baud-rate error, and peripheral pin multiplexing under review when adapting the device to a specific communications standard.
おすすめ
Embedded Control System
MSP430F1491IRTDT is appropriate for a compact embedded control system that must combine acquisition, logic, and serial control. The MSP430 architecture supports low-power firmware, the ADC provides analog inputs, and the comparator can assist with fast threshold decisions. The device is especially useful when the system does not need the larger memory or package of a higher-end MCU. Validation should include startup behavior, brownout conditions, pin multiplexing, ADC reference requirements, and thermal behavior across the intended enclosure temperature.
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: MSP430F1491IRTDT — 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 | MSP430F1491IPMR |
|---|---|---|
| Package | 64-pin VQFN RTD with exposed pad | Different package; not verified as matching |
| Brand | Texas Instruments | Texas Instruments |
主な差別化要因
- Mixed-signal integration （vs Generic low-power microcontroller without the same verified peripheral set)
- Low-power operating range （vs A higher-power general-purpose MCU)
- Memory-oriented configuration （vs A microcontroller with less onboard nonvolatile memory)
設計ノート
Estimated: the verified active current is 280 µA at 1 MHz and 2.2 V, so the active-mode calculation uses the MCU figure only and excludes sensor, interface, regulator, and pull-up loads. The final power budget must include every rail consumer and the duty cycle of each operating mode. Standby current is reported as 1.6 µA, but wakeup behavior, leakage, and external-device sleep currents can dominate a battery design.
Route the exposed pad using the manufacturer’s package and thermal guidance, and provide a stable ground reference close to the device. Place required bypass capacitors at the relevant supply pins with short, low-inductance traces. Because the complete pin map is not included in the verified sources, verify every VQFN RTD land, exposed-pad connection, and decoupling location against the official drawing before fabrication.
Treat analog inputs and comparator signals as sensitive to switching current and ground return paths. Keep the ADC path away from UART, SPI, and high-current return routes where possible, use a defined reference and input range, and account for source impedance and acquisition time in firmware. The 12-bit ADC resolution does not guarantee 12-bit system accuracy without suitable conditioning and calibration.
Do not assume that a 3.3 V supply alone makes every connected peripheral compatible; verify input thresholds, output levels, timing, and I/O limits from the manufacturer datasheet. Also avoid selecting a substitute based only on the MSP430 name. Memory map, package land pattern, exposed pad, peripheral availability, and software device support must all be checked before replacement.
コンプライアンス情報
The supplied verified web results identify the manufacturer, device function, package, memory, interfaces, supply range, and power figures but do not provide compliance declarations.
