MSP430F5438ACY - 25MHz 256KB Flash MCU | Texas Instruments
MPN: MSP430F5438ACY ✓ Hoạt độngMSP430F5438ACY Tóm tắt
A microcontroller is a programmable integrated circuit that combines a processor core, memory, and peripherals on one semiconductor die. The MSP430 belongs to the mixed-signal MCU category and is commonly used for low-power embedded systems because its architecture supports multiple operating modes and peripheral resources while integrating analog conversion functions.
The MSP430F5438ACY provides a 25 MHz CPU clock, 256 KB flash, and 16 KB SRAM. Its 12-bit ADC supports applications that require measured analog inputs, while the hardware multiplier improves multiplication-intensive signal processing. Four communication interfaces are identified in the verified product data, supporting UART, SPI, and I2C connectivity.
The MSP430F5438ACY is suitable for industrial measurement, data acquisition, communications, embedded control, and low-power sensor systems. DMA can move peripheral data with less processor intervention, while the integrated timers and communication peripherals reduce the need for additional discrete interface components.
The device operates from a 2.4 V to 3.6 V supply according to the verified distributor specification, and the listed industrial operating range is -40°C to 85°C. Its 40-pin WQFN package supports compact surface-mount layouts while exposing the MCU’s analog, digital, and communication resources.
PCB designers should follow the manufacturer’s package and pinout documentation, provide appropriate decoupling near the supply pins, and verify signal levels and peripheral multiplexing before firmware configuration. This product combines a 25 MHz processor, 256 KB flash, and integrated analog and serial peripherals for compact embedded control designs.
This page combines verified manufacturer and distributor information with practical engineering context for selecting the MSP430F5438ACY and understanding its role in embedded systems.
Bộ thay thế dễ dàng lắp đặt cho MSP430F5438ACY — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MSP430F5438ACY (cùng hình factor và footprint) — khác nhau ở Communication Interfaces, Hardware Multiplier, Package, Timers.
MSP430F5438AIPZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MSP430F5438AIPZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MSP430F5438AMPZREP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MSP430F5438ACY Tỷ lệ tối đa & tính chất điện
| Product Type | 16-bit mixed-signal microcontroller |
| CPU Clock Speed | 25 MHz |
| Flash Memory | 256 KB |
| SRAM | 16 KB |
| ADC Resolution | 12-bit |
| Supply Voltage Range | 2.4 V to 3.6 V |
| I/O Ports | 31 |
| Communication Interfaces | UART, SPI, I2C |
| DMA | Available |
| Timers | Integrated |
| Hardware Multiplier | 32-bit hardware multiplier |
| Hộp | WQFN-40, green plastic |
| Khoảng nhiệt độ hoạt động | -40°C to 85°C |
| Trạng thái vòng đời | Active |
| Kiểu lắp đặt | Surface mount |
Hướng dẫn cấu hình chân MSP430F5438ACY wqfn-40, green plastic
Cấu hình chân cho MSP430F5438ACY (wqfn-40, green plastic gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho MSP430F5438ACY.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MSP430F5438ACY phù hợp cho 6 Áp dụngs: Industrial Sensor Acquisition, Low-Power Data Logger, Embedded Communications Controller, Precision Control System, Battery-Powered Monitoring Node, Industrial Gateway Interface.
Industrial Sensor Acquisition
The MSP430F5438ACY fits industrial sensor acquisition because its 12-bit ADC and 25 MHz CPU provide a platform for sampling and processing mixed analog inputs. The MCU can supervise multiple sensor channels while its UART, SPI, or I2C interface connects to transducers, signal conditioners, or remote measurement modules. With 256 KB flash and 16 KB SRAM, firmware can support calibration tables, filtering, diagnostics, and local data buffering. DMA and timers help coordinate periodic conversions and transfers. A practical design uses regulated 2.4 V to 3.6 V supplies and verifies the ADC input range and peripheral pin multiplexing in the manufacturer documentation.
Được đề xuất
Low-Power Data Logger
The MSP430F5438ACY is suitable for a low-power data logger that periodically samples sensors and stores or transmits measurements. Its low-power MCU architecture supports duty-cycled operation, while 16 KB SRAM can hold active data buffers and 256 KB flash provides room for firmware and local records. UART, SPI, and I2C allow the logger to interface with flash storage, a radio, or an industrial gateway. Timers can wake the device at defined intervals, and DMA can reduce processor involvement during transfers. Battery-life design should minimize active-mode duration, disable unused peripherals, and validate standby or shutdown behavior against the complete operating requirements.
Được đề xuất
Embedded Communications Controller
The MSP430F5438ACY can serve as a communications controller for embedded serial systems because it integrates UART, SPI, and I2C with a 25 MHz 16-bit processor. A modem, sensor network, display controller, or industrial peripheral can be connected through the appropriate interface. The hardware multiplier and DMA resources support data-intensive routines, while 256 KB flash allows protocol stacks and application firmware. Designers should reserve pins for the selected USCI functions, confirm signal levels, and account for bus timing. The MCU’s 2.4 V to 3.6 V supply range makes it appropriate for 3.3 V systems when all attached devices share compatible electrical requirements.
Được đề xuất
Precision Control System
The MSP430F5438ACY is appropriate for precision embedded control when analog feedback and deterministic peripheral timing are required. Its 12-bit ADC can sample control inputs, while timers support timing-critical tasks and hardware resources can drive external interfaces. The 25 MHz clock provides processing headroom for state-machine logic, filtering, diagnostics, and communications. In a closed-loop design, firmware can convert ADC readings, apply control calculations, update outputs, and report status through UART or SPI. Layout should isolate analog and digital return paths where possible, provide local supply decoupling, and verify the package’s exposed thermal and power connections in the official pin documentation.
Được đề xuất
Battery-Powered Monitoring Node
The MSP430F5438ACY supports battery-powered environmental monitoring by combining low-power control, ADC measurement, and serial connectivity. A node can wake periodically, sample a temperature, light, pressure, or current sensor, and transmit the result through UART, SPI, or I2C. The MCU’s 16 KB SRAM supports short-term buffering, while 256 KB flash supports application code and configuration. Power consumption depends on the duty cycle, sensor current, communication time, and board leakage, so firmware should use low-power modes and disable unused blocks. The 3.6 V maximum listed supply should also be checked against battery charging, transient protection, and regulator tolerances.
Được đề xuất
Industrial Gateway Interface
The MSP430F5438ACY can serve as a local gateway controller between sensors and a higher-level communications network. Its multiple USCI interfaces allow simultaneous connection to sensor peripherals and an external communications device, while DMA and timers support regular data movement. Firmware can format measurements, maintain counters, detect faults, and expose status through a host interface. The 25 MHz CPU and 256 KB flash provide capacity for protocol handling and application logic, while 16 KB SRAM supports packet buffering. For a robust gateway, validate electrical isolation, connector protection, supply sequencing, and firmware timing before deployment in industrial environments.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MSP430F5438ACY — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MSP430F5438 | MSP430F5438A | MSP430F5438AMPZREP |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| CPU Clock | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB |
Bảo phân biệt quan trọng
- Integrated mixed-signal resources (vsMSP430F5438AMPZREP)
- Compact verified package option (vsMSP430F5438AMPZREP)
- Same-family compatibility context (vsMSP430F5438A)
Ghi chú thiết kế
Place the MCU supply decoupling capacitors close to the appropriate power and ground pins, following the manufacturer’s recommended values and layout. The verified supply range is 2.4 V to 3.6 V, so the regulator should have adequate transient margin and the system should avoid uncontrolled excursions near the limits. Verify whether unused ADC, communication, and I/O pins require defined levels during sleep or reset states.
Treat analog and digital routing as separate signal paths on the PCB. Keep ADC inputs away from switching nodes and high-current return paths, use a continuous ground reference where appropriate, and place input-conditioning components close to their associated pins. The 12-bit ADC can be useful for sensor measurement, but its practical accuracy depends on source impedance, filtering, reference stability, and printed-circuit noise.
Do not assume that a family member or related ordering code is automatically a drop-in replacement. Confirm package dimensions, exposed-pad requirements, pin multiplexing, supply limits, peripheral assignments, memory size, and temperature grade. The MSP430F5438 and MSP430F5438A product pages provide the authoritative starting point, while the MSP430F5438AMPZREP result is listed in a 100-LQFP package and therefore requires a footprint review.
Review USCI pin multiplexing and external bus timing before assigning UART, SPI, or I2C functions. Use appropriate series termination, pull-up or pull-down networks, and protection devices based on the connected peripheral and cable environment. SPI is particularly sensitive to clock-edge behavior and trace loading, while I2C requires correct pull-up strength and rise-time control. Validate timing with the selected clock configuration.
Thông tin tuân thủ
The supplied verified data does not explicitly state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status for MSP430F5438ACY. These fields remain unknown rather than being inferred.
