MSP430F5638IPZ - 20MHz 256KB Flash MCU | Texas Instruments
Référence : MSP430F5638IPZ ✓ ActifMSP430F5638IPZ Présentation
An ultra-low-power microcontroller is a semiconductor designed to complete control and measurement tasks while minimizing energy consumption. The MSP430 family combines a 16-bit RISC core, 16-bit registers, constant generators, and hardware peripherals in a single mixed-signal device. Its architecture supports portable instruments that must alternate between active processing and low-power standby operation while retaining measurements, control state, and communications.
Three headline characteristics distinguish this part. The 20 MHz CPU provides higher processing throughput than slower MSP430 devices, while 256 KB of Flash provides room for application code, boot routines, and firmware updates. The analog signal chain combines a 12-bit ADC and 12-bit DAC, allowing a single device to acquire sensor inputs and generate analog outputs without requiring separate converters.
The integrated feature set also includes USB, DMA, and a comparator. USB supports direct connectivity to a host or peripheral system, DMA reduces CPU involvement during data transfers, and the comparator supports threshold detection and basic analog supervision. Texas Instruments identifies the MSP430F5638 family as an ultra-low-power MCU intended for portable measurement applications where low-power modes can extend battery life.
Typical implementations include USB-connected sensors, precision data loggers, industrial monitoring nodes, handheld analyzers, and low-power embedded measurement instruments. The 12-bit ADC handles analog sensor conditioning, the DAC supports excitation or output signals, and USB reduces the need for a separate protocol converter when the application uses a standard USB interface.
PCB design should preserve the analog signal path and USB signal integrity. Place the ADC and DAC support components close to their associated pins, provide clean reference and supply connections, and route USB differential pairs as a short, symmetric pair on a continuous reference plane. Confirm the exact pin assignments, exposed thermal-pad requirements, and decoupling recommendations in the manufacturer datasheet before layout release.
This page combines the manufacturer's device features with a practical drop-in alternative assessment, package-level comparison, and engineering design notes. It highlights where the MSP430F5638IPZ fits in mixed-signal designs and where pin-compatible MCU options can support memory upgrades, production sourcing, or footprint consolidation.
Alternatives de remplacement direct pour MSP430F5638IPZ — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
MSP430F5658IPZ
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MSP430F5659IPZ
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MSP430F5636IPZ
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MSP430F5637IPZ
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MSP430F6635IPZ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MSP430F5638IPZ Valeurs maximales et caractéristiques électriques
| Manufacturer | Texas Instruments |
| Product Type | 16-bit mixed-signal microcontroller |
| CPU Architecture | MSP430 CPUXV2 16-bit RISC |
| Fréquence d'horloge maximale | 20 MHz |
| Program Memory | 256 KB Flash (256K x 8) |
| SRAM | 16 KB |
| ADC Resolution | 12 bit |
| DAC Resolution | 12 bit |
| Comparator | Integrated |
| DMA | Integrated |
| USB Interface | Integrated USB |
| Number of I/O | 74 |
| Boîtier | 100-LQFP (14 x 14 mm) |
| Type de montage | Surface Mount |
| Internal Oscillator | Internal |
| Low-Power Modes | Five low-power modes |
| Programmable Storage Type | Flash |
| Packaging | Tray |
Guide de configuration des broches du MSP430F5638IPZ 100-lqfp (14 x 14 mm)
Configuration des broches du MSP430F5638IPZ (boîtier 100-lqfp (14 x 14 mm)). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour MSP430F5638IPZ.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MSP430F5638IPZ convient pour 6 applications: USB-Connected Data Logger, Portable Environmental Monitor, Precision Analog Measurement Front End, Industrial Process Monitoring Node, Handheld Test and Measurement Instrument, Smart Sensor Hub.
USB-Connected Data Logger
The MSP430F5638IPZ is well suited to a compact USB data logger because it combines a 20 MHz 16-bit CPU, 256 KB of Flash, 16 KB of SRAM, integrated USB, and a 12-bit ADC in one device. The MCU can acquire periodic sensor readings, format them locally, and transfer them over USB without a separate interface controller. DMA can move peripheral data while the CPU performs scaling or filtering. The practical trade-off is USB implementation complexity: differential routing, grounding, and firmware support must be developed carefully, and the 12-bit converter is appropriate for slow-changing sensor signals rather than high-rate waveform capture.
Recommandé
Portable Environmental Monitor
Battery-operated environmental monitors benefit from the MSP430F5638IPZ because the MSP430 architecture is designed for low-power operation and provides five low-power modes. The MCU can wake periodically, read temperature, humidity, or gas sensors through the 12-bit ADC, store samples in SRAM or Flash, and return to a low-current state. The 256 KB of Flash supports calibration tables, timestamps, and event logging, while DMA can streamline peripheral transfers. Actual endurance depends on the write strategy, so rotating logs and avoiding unnecessary Flash erases help extend service life and reduce average power consumption.
Recommandé
Precision Analog Measurement Front End
The MSP430F5638IPZ can act as the central controller in a compact analog measurement front end. Its 12-bit ADC accepts conditioned sensor voltages, the integrated comparator handles threshold and window supervision, and the 12-bit DAC can generate excitation or test signals. A 20 MHz CPU provides enough throughput for calibration, digital filtering, and compensation without requiring a separate DSP. The main constraint is converter performance: designers must respect acquisition timing, source impedance, reference stability, and noise requirements, and should verify those values in the manufacturer datasheet before fixing the analog gain structure.
Recommandé
Industrial Process Monitoring Node
MSP430F5638IPZ fits industrial process-monitoring nodes that combine sensor acquisition, local control, and USB service access. The 74 available I/O pins support digital sensors, interlocks, status indicators, and discrete outputs, while the 12-bit ADC and DAC handle analog process signals. Five low-power modes make the MCU useful in remote or low-duty-cycle installations, although industrial temperature-range and regulatory requirements must be checked against the device specification. For higher-speed control loops, confirm CPU timing and interrupt latency against the required loop rate before committing the architecture.
Recommandé
Handheld Test and Measurement Instrument
The MSP430F5638IPZ is appropriate for handheld analyzers and portable meters that combine measurement, local display or control, and USB connectivity. Its 256 KB Flash accommodates instrument firmware, lookup tables, calibration coefficients, and communication stacks, while the 16-bit RISC architecture simplifies arithmetic tasks. The integrated ADC, DAC, and comparator reduce external component count in a space-constrained enclosure. Low-power modes help standby consumption, but active display backlighting, switches, and external sensors can dominate the final battery budget, so the complete power profile should be measured rather than inferred from MCU current alone.
Recommandé
Smart Sensor Hub
A smart sensor hub built around MSP430F5638IPZ can aggregate several low-bandwidth sensors and present a consolidated digital interface. The microcontroller manages ADC channels, comparator thresholds, configuration commands, and USB data transfer, while 256 KB of Flash stores device identity, calibration records, and protocol tables. The integrated USB interface is valuable for configuration and data export, but cable attachment and ESD protection must be handled by the board design. Firmware should include device identification and recovery behavior so a disconnected or partially initialized sensor cannot prevent the hub from restarting cleanly.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MSP430F5638IPZ — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MSP430F5658IPZ | MSP430F5659IPZ | MSP430F5636IPZ | MSP430F5637IPZ | MSP430F6635IPZ |
|---|---|---|---|---|---|---|
| Package | 100-LQFP (14 x 14 mm) | 100-LQFP (14 x 14 mm) | 100-LQFP (14 x 14 mm) | 100-LQFP (14 x 14 mm) | 100-LQFP (14 x 14 mm) | 100-LQFP (14 x 14 mm) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| CPU Architecture | MSP430 16-bit RISC | MSP430 16-bit RISC | MSP430 16-bit RISC | MSP430 16-bit RISC | MSP430 16-bit RISC | MSP430 16-bit RISC |
Principaux différenciateurs
- Combines mixed-signal conversion and USB in one MCU (vs MSP430F6635IPZ)
- Matches the baseline memory configuration of the primary upgrade candidates (vs MSP430F5658IPZ)
- Provides substantial flash space for portable instrument firmware (vs MSP430F5636IPZ)
Notes de conception
Place the MCU, its decoupling capacitors, and the ADC reference network close to the corresponding device pins. Keep analog inputs away from the USB differential pair and switching-node areas to reduce pickup. Route analog traces as short, continuous paths with a stable ground reference, and follow the pin-description table in the manufacturer datasheet when assigning supply, analog-reference, and debug connections.
Implement USB as a controlled-impedance differential interface. Route the D+ and D+ pair with matched geometry over a continuous reference plane, minimize vias and stubs, and place USB protection close to the connector. Because the MCU integrates USB, a separate interface controller is unnecessary, but connector protection, chassis grounding, and ESD handling still require dedicated board-level components.
Estimated: with a 3.3 V supply, a 5 V output from the 12-bit DAC, and a 20 mA load, the DAC output path would dissipate approximately 20 mA x 1.7 V = 34 mW. Actual supply use also includes the CPU, ADC, USB, and support circuits. Measure active and standby currents across the intended operating modes because peripherals, flash activity, and leakage can change the final battery budget.
Do not treat the shared 100-pin LQFP footprint as proof of automatic interchangeability. Review the alternate device's pin functions, supply limits, memory map, peripheral set, and errata before substituting an MSP430F56x or F66x device. Firmware also needs an audit because changed register definitions, interrupt vectors, or peripheral resources can prevent an otherwise compatible board from operating correctly.
Informations de conformité
The Texas Instruments product page lists the MSP430F5638 as an active mixed-signal microcontroller. Specific RoHS, REACH, halogen-free, and conflict-minerals declarations are not stated in the available product information and should be confirmed with the manufacturer before regulatory submission.
