MSP430F112IDW - 8MHz 16-Bit MCU, 4KB Flash | Texas Instruments
MPN: MSP430F112IDW ✓ ActiveMSP430F112IDW Overview
A microcontroller is a programmable system-on-chip that combines a processor core, memory, digital I/O and peripherals in one integrated component. The MSP430 family uses a 16-bit RISC-oriented embedded-control architecture within the broader semiconductor and embedded-systems hierarchy. Its small memory footprint and low-power design make it suitable for battery-operated instruments, simple control panels, sensor nodes and compact embedded products where cost, board area and energy efficiency matter more than high compute throughput.
The available verified data identifies an 8MHz maximum clock, 4KB Flash, 256B SRAM, a timer and a comparator. The 256B SRAM figure is also represented in the distributor description as 4K x 8 plus 256B, indicating memory-oriented catalog information rather than a high-capacity application MCU. The 20-SOIC package supports conventional surface-mount assembly and is compatible with PCB layouts requiring a 20-pin SOIC footprint. The exact pin names, electrical limits, supply voltage, current consumption and timing parameters are not present in the supplied search results and are therefore not inferred here.
Typical design uses include low-power sensor acquisition, simple industrial control, battery-powered monitoring, compact instrumentation and embedded control subsystems. The comparator can support threshold-based signal conditioning or simple decision logic, while the timer supports periodic measurement, timing and control functions. Firmware selection should be checked against the device’s exact memory map and peripheral implementation before production release.
A key design consideration is to verify the complete pinout, supply limits, clock configuration and peripheral multiplexing against the manufacturer datasheet rather than relying only on distributor catalog summaries. This page distinguishes verified manufacturer/distributor facts from unspecified parameters and avoids presenting guessed electrical values as production specifications.
This page consolidates verified manufacturer and distributor information, practical application context, comparison fields and design cautions. It also preserves unresolved electrical details as data-needed markers so engineers can verify them before schematic release or PCB sign-off.
Drop-in alternatives for MSP430F112IDW — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
MSP430F1121IPW
✅ Drop-In📋 Reference alternative (not in catalog)
MSP430F112IDW Maximum Ratings & Electrical Characteristics
| Microcontroller Type | 16-bit mixed-signal MCU |
| CPU Architecture | MSP430 CPU16 |
| Maximum Clock Frequency | 8 MHz |
| Flash Memory | 4KB (4K x 8) |
| SRAM | 256B |
| Timer Resource | Timer |
| Comparator Resource | Comparator |
| Package | 20-SOIC |
| Package Width | 0.295 inch (7.50 mm) |
| Mounting Type | Surface Mount |
| Product Type | Microcontroller IC |
| Manufacturer | Texas Instruments |
| DigiKey Memory Description | 4KB (4K x 8 + 256B) |
| Lifecycle Status | Active per current manufacturer product page availability |
MSP430F112IDW 0.295 inch (7.50 mm) Pin Configuration Guide
Pin configuration for MSP430F112IDW (0.295 inch (7.50 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MSP430F112IDW.
Refer to the datasheet for full pin configuration.
Typical Applications
MSP430F112IDW is suitable for 6 applications: Battery-Powered Sensor Node, Compact Industrial Control Module, Simple Measurement and Threshold System, Battery-Powered Remote Instrument, Compact Alarm or Proximity Controller, Embedded Educational or Hobby Controller.
Battery-Powered Sensor Node
MSP430F112IDW fits simple battery-powered sensing designs because it combines an 8MHz 16-bit MSP430 CPU16 core with 4KB Flash, 256B SRAM, a timer and a comparator in a compact 20-SOIC package. The timer can organize periodic sampling or control intervals, while the comparator can perform threshold decisions on a sensor or divided reference signal. The verified data does not specify active or sleep current, so the design must calculate average consumption from the actual sensor and radio duty cycle. Keep firmware within the 4KB Flash and 256B SRAM limits, and verify supply voltage and wake-up behavior from the manufacturer datasheet before selecting the MCU for a low-power node.
Recommended
Compact Industrial Control Module
The MSP430F112IDW is suitable for small control modules that require deterministic periodic behavior without a large embedded processor. Its timer can support scheduled scans, debounce timing, pulse-width measurements or actuator timing, while the comparator can provide a simple hardware threshold function for a process signal. The 8MHz CPU16 architecture gives the firmware a 16-bit processing model, and the 20-SOIC package supports conventional PCB assembly. Because the supplied data does not include supply limits, I/O counts or operating temperature, industrial suitability must be qualified against the enclosure temperature and the complete datasheet electrical ratings before production use.
Recommended
Simple Measurement and Threshold System
MSP430F112IDW can be used as the controller for a compact measurement system in which a comparator handles a threshold decision and the timer coordinates measurement timing. The 8MHz MSP430 CPU16 core can run the control logic and process results, while 256B SRAM provides limited working storage for a small state machine. The 4KB Flash budget should be reserved carefully because code, constants, interrupt routines and data initialization all contribute to program size. The verified results do not identify a specific ADC, so sensor conditioning and analog conversion must be implemented with verified external or internal circuitry and confirmed against the datasheet.
Recommended
Battery-Powered Remote Instrument
The MSP430F112IDW can serve as the control platform for a small remote instrument with intermittent operation and limited local storage. Its timer supports periodic housekeeping, sample timing or button debounce, and its comparator can monitor a divided battery or sensor signal when a simple threshold indication is sufficient. The 20-SOIC package reduces board footprint compared with a larger leaded microcontroller package, while the 16-bit CPU16 architecture is appropriate for compact control code. The supplied data does not verify communication peripherals, ADC resources, current consumption or maximum supply voltage, so those requirements need formal verification before this part is approved for a remote-instrument design.
Recommended
Compact Alarm or Proximity Controller
MSP430F112IDW is a plausible fit for a small alarm, threshold or proximity-control product because the comparator can make a hardware-level decision and the timer can control debounce, pulse timing or periodic monitoring. The 8MHz 16-bit processor can manage the product state machine and output sequence, while the 20-SOIC package supports a compact surface-mount layout. A proximity sensor interface should not be assumed from the comparator alone: sensor type, output voltage, timing and any required output driver must be verified. The available data does not state I/O count, supply range or automotive qualification, so those details must come from the manufacturer documentation.
Recommended
Embedded Educational or Hobby Controller
MSP430F112IDW provides a compact platform for learning embedded control, timer-based sequencing and comparator-based decision logic. Its 8MHz CPU16 core is easy to associate with the MSP430 architecture, while 4KB Flash and 256B SRAM make it practical for small demonstrations rather than large applications. The 20-SOIC package is useful for a hand-assembled or mixed-technology board, and the timer/comparator combination supports visible experiments with timing and threshold behavior. Before purchasing for a teaching board, confirm the development-tool and toolchain compatibility, package pinout, supply voltage and available memory map in the official datasheet.
Recommended
Engineering reference data for MSP430F112IDW — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MSP430F1121IPW |
|---|---|---|
| Package | 20-SOIC | 20-pin package class; exact package equivalence requires datasheet confirmation |
| Brand | Texas Instruments | Texas Instruments |
Key Differentiators
- Verified 8MHz 16-bit MSP430 CPU16 positioning (vs MSP430F1121IPW)
- Integrated comparator alongside timer (vs MSP430F1121IPW)
- Compact 20-SOIC assembly format (vs MSP430F1121IPW)
Design Notes
Verify the MSP430F112IDW supply-voltage range and current limits directly in the Texas Instruments datasheet before selecting regulators, level shifters or capacitors. The supplied verified results confirm an 8MHz MCU, 4KB Flash, 256B SRAM, timer and comparator, but do not provide operating current or voltage values. Estimated: calculate average current from the MCU duty cycle, sensor load and downstream loads; without those measured inputs, no defensible power-budget number can be assigned.
Route the 20-SOIC footprint and pin-1 orientation from the official package drawing rather than a distributor catalog image. Place the decoupling network at the device supply pins and keep sensitive comparator inputs away from switching nodes and high-current paths. The comparator is a useful threshold resource, but its input range, reference method and output behavior must be checked in the datasheet before relying on it for precision analog decisions.
Do not treat the cross-reference mention of MSP430F1121IPW as proof of drop-in equivalence. Before replacing MSP430F112IDW, compare the complete package drawing, pin names, supply pins, reset behavior, memory map, interrupt vectors, timer resources, comparator behavior, clock limits and software model. A family relationship alone does not guarantee firmware compatibility or PCB interchangeability.
Compliance Information
The supplied verified product snippets do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free or conflict-minerals status. Compliance must be confirmed from the current manufacturer documentation or supplier certificates.