MSP430F1491IRTDT - 8MHz 60KB MCU | Texas Instruments
MPN： MSP430F1491IRTDT ✓ 啟用中MSP430F1491IRTDT 概覽
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.
直接替換替代品，適用於 MSP430F1491IRTDT — 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： MSP430F1491IRTDT （相同外形與佔位） — 差異在於 Comparator, Flash Memory, Package, ADC Resolution, Supply Voltage Range.
MSP430F1491IPMR
✅ 直接替換聯絡詢價
查看資料表 →MSP430F1491IRTDT 最大額定值與電氣特性
| 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 |
| 封裝 | 64-pin VQFN RTD with exposed pad |
| Package Dimensions | 9 mm x 9 mm |
MSP430F1491IRTDT 9 mm x 9 mm 腳位配置指南
MSP430F1491IRTDT（9 mm x 9 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MSP430F1491IRTDT.
請參閱 資料表 以查看完整腳位配置。
典型應用
MSP430F1491IRTDT 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 MSP430F1491IRTDT — 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 | MSP430F1491IPMR |
|---|---|---|
| Package | 64-pin VQFN RTD with exposed pad | Different package; not verified as matching |
| Brand | Texas Instruments | Texas Instruments |
主要差異化特點
- Mixed-signal integration (對比Generic low-power microcontroller without the same verified peripheral set)
- Low-power operating range (對比A higher-power general-purpose MCU)
- Memory-oriented configuration (對比A microcontroller with less onboard nonvolatile memory)
設計說明
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.
合規資訊
The supplied verified web results identify the manufacturer, device function, package, memory, interfaces, supply range, and power figures but do not provide compliance declarations.
