MSP430F123IDW - 8MHz 16-Bit Ultra-Low-Power MCU | Texas Instruments
MPN: MSP430F123IDW ✓ نشطMSP430F123IDW نظرة عامة
A mixed-signal microcontroller combines a digital processor with analog and communication peripherals on one integrated circuit. The MSP430 architecture belongs to the broader microcontroller hierarchy and uses a 16-bit RISC CPU, 16-bit registers, and constant generators to support compact, energy-conscious firmware. Its five low-power modes are designed to extend operating time in battery-powered instruments where the processor can spend substantial time waiting for measurements or external events.
The headline resources are an 8 MHz maximum clock, 8 KB of Flash program memory, and 256 bytes of SRAM. The peripheral combination supports event timing through the timer, threshold-based signal evaluation through the comparator, and serial communication through SPI and UART. The industrial ordering option supports operation from -40°C to +85°C, while the specified supply range is 1.8 V to 3.6 V. Twenty-two I/O ports provide connections for sensors, controls, indicators, and external interface devices.
The MSP430F123IDW is organized around the MSP430 CPU16 core, with a 16-bit RISC instruction set and 16-bit registers. The processor works with the on-chip Flash and SRAM rather than requiring external program or working memory in typical designs. Its architecture is intended to balance processing throughput with low standby and shutdown demand, an important consideration when the device spends long intervals between sensor samples or operator interactions.
Typical implementations include portable environmental monitors, industrial sensor nodes, compact data loggers, battery-powered diagnostic instruments, digital thermometers, and low-power control panels. The SPI interface can connect to external sensors or storage, while the UART supports a host computer or service connection. The comparator is useful for monitoring a signal against a reference without requiring every decision to be handled exclusively in software.
When laying out a board, preserve the MSP430F123IDW power, ground, decoupling, and programming connections exactly as specified by the manufacturer. Avoid placing noisy switching circuits beside sensitive analog inputs, provide local supply bypassing, and route clock and serial signals away from high-current switching paths. Confirm unused-port states in firmware and account for the limited 256-byte SRAM when organizing buffers and call stacks.
This product record combines the exact ordering information, core specifications, package details, and engineering-use guidance needed to evaluate the MSP430F123IDW. It also distinguishes verified drop-in replacements from merely similar devices, helping designers avoid substitutions that change the footprint, peripheral set, memory capacity, or software support.
بدائل مباشرة لـ MSP430F123IDW — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
لا تتوفر بدائل متوافقة تمامًا لهذا المنتج.
اطلب بدائلMSP430F123IDW الحدود القصوى والخصائص الكهربائية
| Product Type | 16-bit ultra-low-power mixed-signal microcontroller |
| Maximum Clock Speed | 8 MHz |
| CPU Architecture | 16-bit RISC |
| Flash Memory | 8 KB |
| SRAM | 256 bytes |
| Register Width | 16 bit |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Port Count | 22 |
| Serial Interface | SPI and UART |
| Analog Peripheral | Comparator |
| Timing Peripheral | Timer |
| Low-Power Modes | 5 modes |
| نطاق درجة حرارة التشغيل | -40°C to +85°C |
| Package Type | 28-pin SOIC (DW) |
| Package Pin Count | 28 pins |
| نوع التركيب | Surface mount |
| حالة دورة الحياة | Active |
دليل تكوين أطراف MSP430F123IDW 28 pins
تكوين الأطراف لـ MSP430F123IDW (حزمة 28 pins). تتضمن هذه الدائرة المتكاملة الرقمية GPIO وواجهات الاتصال (UART وSPI وI2C) وأطراف الطاقة. راجع ورقة بيانات الشركة المصنعة لوظائف الأطراف البديلة وخيارات التكوين. ضرورية لتصميم الأنظمة المدمجة وتخطيط PCB.
لا تتوفر بيانات مفصلة لمخطط التوصيلات لـ MSP430F123IDW.
راجع ورقة البيانات للحصول على تكوين الأطراف الكامل.
التطبيقات النموذجية
MSP430F123IDW مناسب لـ 6 التطبيقs: Portable Environmental Monitor, Industrial Sensor Node, Battery-Powered Data Logger, Digital Thermometer, Low-Power Control Panel, Precision Threshold Monitor.
Portable Environmental Monitor
The MSP430F123IDW fits a portable environmental monitor that periodically samples a sensor and remains idle between readings. Its 8 MHz 16-bit RISC CPU provides enough control capability for local calculations, while 256 bytes of SRAM requires concise buffers and staged processing. The integrated comparator can observe a threshold signal, the timer can schedule periodic measurements, and SPI can connect to a digital sensor. Five low-power modes help reduce consumption during idle intervals, extending useful battery life in field instruments.
Industrial Sensor Node
The MSP430F123IDW suits compact industrial sensor nodes that combine local measurement with a short-range serial connection. The 1.8 V to 3.6 V supply range supports low-voltage embedded systems, and the 28-pin SOIC package leaves room for sensor conditioning, protection, and status indication. SPI can serve a peripheral sensor or external storage device, while UART can connect the node to a local controller. Industrial temperature operation from -40°C to +85°C supports equipment deployed across varied environments.
Battery-Powered Data Logger
The MSP430F123IDW works well in a battery-powered data logger that wakes for scheduled measurements and returns to a low-power state between records. The timer can establish acquisition intervals, while the 16-bit CPU can process samples before they are transmitted through UART or SPI. Its 8 KB Flash stores firmware and compact configuration data, but the 256-byte SRAM makes efficient buffer management essential. The five low-power modes are the principal advantage for reducing average energy use in unattended logging equipment.
Digital Thermometer
The MSP430F123IDW is appropriate for a digital thermometer that combines analog threshold observation with digital temperature processing and display control. The comparator can monitor a sensor-derived signal, and the timer can organize periodic sampling or button response. SPI and UART provide options for connecting a display controller, calibration interface, or host device. Because the device includes only 256 bytes of SRAM, the firmware should perform conversions and formatting in small stages rather than retaining entire sample histories.
Low-Power Control Panel
The MSP430F123IDW can serve as the low-power controller in a small instrument panel with buttons, indicators, sensors, and a service interface. Its 22 I/O ports support multiple discrete inputs and outputs, while the timer manages periodic tasks or display updates. The UART provides a straightforward service or host connection, and SPI can support a higher-bandwidth display or logging peripheral. Low-power modes are valuable when the panel must preserve battery life without continuously polling every input.
Precision Threshold Monitor
The MSP430F123IDW is useful for a threshold-monitoring product that must react to an analog condition while retaining flexible control logic. The integrated comparator can observe an analog signal, while the 16-bit RISC processor performs filtering, state management, and communication. SPI can connect to a higher-resolution sensor when required, and UART can report events to a parent system. The 1.8 V minimum operating voltage supports low-voltage designs, although input and output levels must be checked against the selected external interface.
بيانات مرجعية هندسية لـ MSP430F123IDW — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج |
|---|---|
| Package | 28-pin SOIC (DW) |
| Brand | Texas Instruments |
| Maximum Clock Speed | 8 MHz |
| CPU Architecture | 16-bit RISC |
| Flash Memory | 8 KB |
| SRAM | 256 bytes |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Port Count | 22 |
| Communication Interfaces | SPI and UART |
| Operating Temperature Range | -40°C to +85°C |
أبرز الفروقات
- Compact mixed-signal integration (مقابلA generic 8 MHz 16-bit MCU without the same integrated peripheral set)
- Five-mode low-power design (مقابلA continuously active general-purpose microcontroller)
- Compact 28-pin footprint (مقابلA larger-package MCU with additional unused pins)
ملاحظات التصميم
Operate the MSP430F123IDW only within its specified 1.8 V to 3.6 V supply range. Place the required supply bypassing close to the device power pins and use the manufacturer’s recommended PCB layout. In battery-powered designs, evaluate average current across active and low-power states rather than relying only on active-mode consumption, because sensor and interface leakage can dominate long idle periods.
Map the 28-pin DW footprint from the manufacturer pin-description table and preserve exposed test, reset, power, ground, and programming functions. Keep the SPI and UART routes away from switching-node traces and high-current return paths. When the comparator monitors an analog signal, use a quiet layout around that input and connect external protection components close to the source.
The 256-byte SRAM is the most important firmware constraint on this device. Avoid large local arrays, deep recursive call chains, and multiple simultaneous communication buffers. Move nonessential data to Flash or external storage, process samples incrementally, and verify interrupt timing so that UART or SPI servicing does not delay timing-critical tasks.
Route the programming interface and reset path away from noisy analog or switching circuitry. Maintain short ground returns from the device and local bypass capacitors to the same ground reference used by the processor. If the comparator input is sensitive, avoid sharing its ground-current path with LEDs, motor drivers, or power-conversion components.
معلومات الامتثال
The device is identified as active, but explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations were not included in the verified product information.
