MSP430P112IDW - 16-Bit 8MHz Ultra-Low-Power MCU | Texas Instruments
Référence : MSP430P112IDW ✗ Fin de vieMSP430P112IDW Présentation
What is an ultra-low-power mixed-signal microcontroller? It is a semiconductor that combines a low-power digital CPU with resources for interacting with analog signals. In the MSP430 family, the MSP430 core belongs to the broader RISC microcontroller hierarchy and is selected when energy efficiency, fast interrupt handling, and compact embedded control matter more than a large memory map or high peripheral integration.
Key verified features include a 16-bit RISC architecture, 4 KB OTP, 256 B RAM, and operation up to 8 MHz. The available datasheet search data also identifies a maximum supply voltage of 5.5 V, standby wake-up within 6 microseconds, and off-mode RAM-retention current as low as 0.1 microampere. These figures make the device applicable where the controller spends substantial time waiting for an event and must resume quickly.
The MSP430 architecture provides a compact instruction set and deterministic timing useful for embedded measurement, control, and low-duty-cycle monitoring. Its 4 KB program memory is modest, so firmware must be sized carefully, while 256 B of RAM supports local variables and short data buffers. The 20-SOIC format also simplifies assembly and inspection compared with very small packages, although it is larger than modern QFN options.
Typical uses include battery-operated sensor nodes, simple industrial controls, compact instrumentation, meter-reading products, and portable measurement devices. Because the supplied data does not enumerate the target device's individual I/O assignments or peripheral set, the complete pinout and peripheral requirements should be checked in the manufacturer datasheet before PCB release.
The principal design consideration is supply and power management. Designers should use a regulated supply within the 5.5 V maximum, confirm clock requirements against the selected operating mode, and avoid treating every SOIC-20 MCU as pin-compatible. Programming, reset, and unused-pin handling must follow the MSP430P112 datasheet exactly.
This page consolidates the verified distributor specifications, sourcing context, and design cautions for MSP430P112IDW. It also distinguishes factual data from fields that require confirmation, helping engineers evaluate the MCU without introducing unverified electrical, timing, or compliance claims.
Alternatives de remplacement direct pour MSP430P112IDW — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesMSP430P112IDW Valeurs maximales et caractéristiques électriques
| Architecture | 16-bit RISC |
| CPU Family | MSP430x1xx |
| Fréquence d'horloge maximale | 8 MHz |
| Instruction Cycle Time | 200 ns minimum |
| Program Memory | 4 KB OTP |
| Program Memory Organization | 4K x 8 |
| RAM | 256 B |
| Maximum Supply Voltage | 5.5 V |
| Off-Mode Current with RAM Retention | 0.1 microampere |
| Standby Wake-Up Time | 6 microseconds maximum |
| Device Type | Mixed-signal microcontroller |
| Boîtier | 20-SOIC |
| Package Pin Count | 20 pins |
| Type de montage | Surface mount |
| Process Technology | CMOS |
Guide de configuration des broches du MSP430P112IDW 20 pins
Configuration des broches du MSP430P112IDW (boîtier 20 pins). 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 MSP430P112IDW.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MSP430P112IDW convient pour 6 applications: Battery-Powered Sensor Node, Compact Industrial Control Module, Portable Meter Reading, Simple Environmental Monitor, Battery-Powered Security Beacon, Low-Power Process Control.
Battery-Powered Sensor Node
The MSP430P112IDW fits a low-duty-cycle sensor node that must preserve state and wake rapidly between measurements. Verified data identifies 0.1 microampere off-mode current with RAM retention and a 6 microsecond maximum standby wake-up, allowing the controller to remain dormant between events. Its 256 B RAM is suitable for compact state variables, while the 4 KB OTP can hold a tightly scoped acquisition and communication routine. The exact sensor interface, minimum supply, and active current are not supplied and must be confirmed before battery sizing.
Compact Industrial Control Module
MSP430P112IDW can serve as the control core of a compact industrial module when the design prioritizes deterministic execution and low standby demand over large memory. The 16-bit RISC architecture, 200 ns minimum instruction cycle, and 8 MHz maximum clock support responsive control logic, while the 20-pin SOIC package is straightforward to inspect and assemble. The 5.5 V maximum supply fits many low-voltage industrial boards, but isolation, surge requirements, analog interfaces, and the exact pin-level resource map remain datasheet-dependent.
Portable Meter Reading
The MSP430P112IDW is applicable to a portable meter-reading product that wakes, samples, stores a small result, and returns to sleep. Its 4 KB OTP is appropriate for a focused measurement state machine, and the 256 B RAM can hold temporary calibration or packet data. Rapid standby wake-up within 6 microseconds can reduce perceived response delay, while low off-mode consumption can benefit battery life. Designers must verify timer, communications, and I/O availability because those peripheral details are absent from the supplied snippets.
Simple Environmental Monitor
MSP430P112IDW can supervise a low-rate environmental monitor that periodically reads a sensor and applies threshold logic. Its ultra-low-power operating modes are more relevant than peak processing speed for this duty cycle, and the compact SOIC package preserves a conventional land pattern. The 4 KB OTP program memory requires disciplined firmware sizing, while the 256 B RAM may be adequate for sampled data but not large histories. ADC specifications, sensor interfaces, and calibrated accuracy must be obtained from the manufacturer datasheet.
Battery-Powered Security Beacon
MSP430P112IDW is a candidate for a low-power security or asset-tracking beacon that mostly remains asleep and activates on a schedule or external event. The verified 0.1 microampere off-mode figure with RAM retention supports long standby intervals, and the 6 microsecond maximum wake-up helps the device respond after detection. The MCU does not automatically provide wireless connectivity, so a suitable radio or sensor must be added and its power profile included in the system budget. Security features, oscillator options, and all peripheral functions require datasheet verification.
Low-Power Process Control
The MSP430P112IDW can be evaluated for small process-control tasks that use a compact 16-bit controller and low standby energy. Its 200 ns instruction cycle and 8 MHz ceiling provide useful timing headroom for uncomplicated control loops, while the 20-pin SOIC package limits package complexity. Suitability depends on whether the board requires the exact analog inputs, timers, communication interface, and pin assignments of MSP430P112. Those details, along with operating-temperature limits, are not present in the provided data and should be checked before design commitment.
Données de référence d'ingénierie pour MSP430P112IDW — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Notes de conception
Validate the complete power profile before committing to a battery design. The verified data identifies 0.1 microampere off-mode current with RAM retention and 6 microseconds maximum standby wake-up, but it does not provide active current or minimum supply voltage. Calculate average consumption from the actual duty cycle and include sensor, pull-up, and regulator leakage. The 5.5 V value is a maximum identified in the supplied material, not a substitute for the complete recommended operating conditions.
Do not create the PCB footprint or assign nets from the package name alone. Although MSP430P112IDW is identified as a 20-SOIC, the supplied material does not include individual pin numbers, pin names, or verified land-pattern dimensions. Download the current Texas Instruments datasheet, cross-check its package drawing, and map supply, programming, reset, clock, and I/O pins. A shared SOIC-20 outline does not establish electrical compatibility with another MCU family.
Treat the 4 KB OTP limit as an architectural design constraint, not merely a late-stage firmware concern. Reserve memory for interrupt vectors, startup code, constants, and application logic, because OTP is not described in the supplied data as field-programmable. Estimate the compiled image early and avoid architectures that duplicate library code. The 256 B RAM similarly requires attention to call depth, buffering, and interrupt-variable overlap.
Place required bypass capacitors and programming or clock connections according to the verified manufacturer layout guidance, but do not invent values from generic MCU practice. Keep sensitive analog or timing paths short if the chosen application uses them, and maintain a quiet ground return. Because the available snippets omit pin assignments, pin-multiplexing options, and reference layouts, any routing decision must be rechecked against the MSP430P112 documentation before release.
Informations de conformité
The supplied search snippets mention compliance topics on a comparison page but do not state MSP430P112IDW's actual compliance result. No compliance claim is inferred.