MSP430F123IPW - 8MHz 16-Bit MCU | Texas Instruments
MPN： MSP430F123IPW ✓ 啟用中MSP430F123IPW 概覽
An ultralow-power microcontroller is an integrated semiconductor that prioritizes low active and standby current while retaining deterministic digital processing and mixed-signal sensing capabilities. The MSP430 belongs to the microcontroller hierarchy of embedded processors, combining a RISC CPU, nonvolatile program memory, volatile data memory, timers, communication interfaces, and low-power control in one package. Its architecture is aimed at battery-powered instruments, sensors, industrial controls, and portable measurement systems.
Five low-power operating modes allow the MSP430F123IPW to reduce activity when continuous processing is unnecessary. According to the manufacturer product information, active-mode current is approximately 200 µA at 1 MHz and 2.2 V, standby current is 0.7 µA, and off-mode current with RAM retention is 0.1 µA. Wake-up from standby takes less than 6 µs, allowing the device to preserve responsiveness while reducing average system energy consumption.
The CPU architecture uses a 16-bit RISC processor with 16-bit registers and a constant-memory instruction set. Program storage consists of 8 KB of Flash, while 256 bytes of SRAM provide working data space. The mixed-signal resources include a comparator for thresholding or simple analog-interface functions, and the communication peripherals include USART and SPI interfaces for connecting sensors, transceivers, displays, and external data acquisition components.
Typical uses include portable environmental monitors, industrial sensor nodes, battery-powered data loggers, smart measurement instruments, and compact control boards. The 1.8 V to 3.6 V supply range supports low-voltage embedded systems, while the 28-pin TSSOP package permits conventional surface-mount assembly. The USART supports serial links to host computers or configuration equipment, and SPI can provide a faster interface to external sensors, flash memory, or converters.
Designers should account for MCU operating current, peripheral load, startup behavior, and the time required to leave standby. Decoupling capacitors should be placed close to the supply pins, and unused inputs should be connected to defined levels. Firmware should configure the unused peripherals and pins before entering a low-power state, then use the documented wake-up mechanism to restore the required clock and peripheral conditions.
This product page combines the manufacturer device characteristics, package information, compatible MSP430 candidates, comparison parameters, and practical integration guidance. It is intended to accelerate part evaluation while preserving separate verification against the Texas Instruments MSP430F123IPW datasheet and the latest part-ordering information.
直接替換替代品，適用於 MSP430F123IPW — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MSP430F123IPW （相同外形與佔位） — 差異在於 Flash Memory, Package, SRAM, Product Type, Timer.
MSP430F1232IPWR
✅ 直接替換📋 參考替代品（不在目錄中）
MSP430F122IPWR
✅ 直接替換📋 參考替代品（不在目錄中）
MSP430F1101IPW
✅ 直接替換📋 參考替代品（不在目錄中）
MSP430F123IPW 最大額定值與電氣特性
| Product Type | 16-bit mixed-signal RISC microcontroller |
| 最大時脈頻率 | 8 MHz |
| Flash Memory | 8 KB |
| SRAM | 256 bytes |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Active Current | 200 µA at 1 MHz and 2.2 V |
| Standby Current | 0.7 µA |
| Off Current with RAM Retention | 0.1 µA |
| Standby Wake-Up Time | Less than 6 µs |
| Low-Power Modes | 5 modes |
| CPU Architecture | 16-bit RISC with 16-bit registers |
| Serial Interfaces | SPI and USART |
| Analog Peripheral | Comparator |
| Timer | Integrated timer |
| 封裝 | 28-pin TSSOP (PW) |
| 工作溫度範圍 | -40 °C to +85 °C |
| 安裝類型 | Surface mount |
MSP430F123IPW 28-pin tssop (pw) 腳位配置指南
MSP430F123IPW（28-pin tssop (pw) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MSP430F123IPW.
請參閱 資料表 以查看完整腳位配置。
典型應用
MSP430F123IPW 適用於 6 應用s: Portable Environmental Sensor Nodes, Battery-Powered Data Loggers, Industrial Sensor and Control Nodes, Smart Measurement Instruments, Low-Power Remote Monitoring, Compact Audio Acquisition Controls.
Portable Environmental Sensor Nodes
The MSP430F123IPW fits portable environmental monitoring because it combines an 8 MHz 16-bit RISC CPU, 8 KB of Flash, and 256 bytes of SRAM with low standby current of 0.7 µA. Its comparator can support threshold-based sensing, while SPI can connect a temperature, humidity, pressure, or gas sensor. The 1.8 V to 3.6 V operating range also supports compact battery-powered boards. Firmware can sample a sensor, store results, transmit over USART, and enter standby between measurements to reduce average energy use.
推薦
Battery-Powered Data Loggers
The MSP430F123IPW is appropriate for compact data loggers because its five low-power modes support long intervals between samples. The controller provides 8 KB of Flash for firmware and nonvolatile data, 256 bytes of SRAM for temporary records, and an SPI interface for an external memory or sensor. Its less-than-6-µs standby wake-up time allows prompt measurement activity. Use the USART to transfer records to a host, and verify regulator quiescent current because total logger energy depends on both the MCU and attached sensors.
推薦
Industrial Sensor and Control Nodes
The MSP430F123IPW supports compact industrial sensor nodes that need deterministic control and low standby consumption. Its 16-bit RISC processor executes control logic at up to 8 MHz, the comparator handles simple analog thresholding, and the timer supports periodic measurement or actuator timing. SPI provides a local bus for converters and sensors, while USART can connect to a longer-distance controller. The 28-pin TSSOP package simplifies conventional surface-mount assembly, and the -40 °C to +85 °C range supports industrial temperature conditions.
推薦
Smart Measurement Instruments
The MSP430F123IPW fits smart measurement instruments where a small processor, low power, and mixed-signal control are valuable. The comparator can implement fast threshold detection, the timer can coordinate sampling intervals, and USART or SPI can connect a display, sensor, or configuration interface. Its 256-byte SRAM supports short working buffers, while 8 KB of Flash accommodates control firmware and calibration parameters. The 1.8 V minimum supply supports low-voltage analog sections, although the complete instrument still requires appropriate analog isolation, reference design, and calibration.
推薦
Low-Power Remote Monitoring
The MSP430F123IPW can serve as the supervisory controller in a low-power remote-monitoring assembly. Its 0.7 µA standby current and less-than-6-µs wake-up time permit frequent health checks without keeping the processor continuously active. USART supports a simple communications link, SPI supports local sensors or external memory, and the comparator can detect a crossing or fault condition. The design should specify the sleep duration, peripheral disable sequence, and regulator efficiency because the MCU figures represent only part of the total remote-node consumption.
推薦
Compact Audio Acquisition Controls
The MSP430F123IPW can control compact audio-acquisition equipment when low standby power and mixed-signal control are more important than high multimedia processing throughput. Its timer supports sample-clock or event management, USART handles configuration, and SPI can connect a serial audio device or external storage. The comparator may assist with simple peak or threshold monitoring. The 8 KB Flash and 256-byte SRAM constrain buffering, so the audio stream should be processed or transmitted rather than retained entirely on the MCU. External converters and clocking components remain necessary for professional audio performance.
推薦
推薦產品摘要
工程參考資料，適用於 MSP430F123IPW — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MSP430F1232IPWR | MSP430F122IPWR | MSP430F1101IPW |
|---|---|---|---|---|
| Package | TSSOP-28 (PW) | TSSOP-28 (PW) | TSSOP-28 (PW) | TSSOP-28 (PW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Maximum Clock Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Flash Memory | 8 KB | 8 KB | 4 KB | 2 KB |
| SRAM | 256 bytes | 256 bytes | 256 bytes | 128 bytes |
主要差異化特點
- Higher memory capacity than the MSP430F1101IPW (對比MSP430F1101IPW)
- Twice the Flash capacity of the MSP430F122IPWR (對比MSP430F122IPWR)
- Closest documented same-package memory match (對比MSP430F1232IPWR)
設計說明
Budget the entire sleep path, not only the MSP430F123IPW. The device draws approximately 0.7 µA in standby and 0.1 µA in off mode with RAM retention, but a sensor, pull resistors, regulator, and communications interface can dominate standby consumption. Disable unused peripherals before sleeping, remove external loads where practical, and measure the assembled board across each operating mode.
Place the supply bypass capacitor adjacent to the MSP430F123IPW power pins and route the ground return without splitting the plane beneath the device. The 28-pin TSSOP footprint requires adequate spacing between adjacent traces and adequate board area for a thermal path. Confirm the manufacturer land pattern and pin-1 orientation against the package drawing before releasing artwork.
Do not treat a same-package MSP430 variant as a guaranteed firmware-compatible replacement. Check every pin, alternate function, interrupt source, timer arrangement, clock setting, and peripheral feature in the manufacturer pin-description and device documentation. The MSP430F1232IPWR is the closest candidate, while MSP430F122IPWR and MSP430F1101IPW require particular attention to reduced memory.
Keep SPI traces short and provide a continuous return path beneath the signals when practical. Separate the comparator input from switching nodes and high-current loads to reduce threshold noise. When the SPI bus connects to external circuitry, include a defined series-resistor strategy and use the manufacturer recommendations for signal-integrity and electromagnetic compatibility.
合規資訊
Compliance declarations were not explicitly identified in the manufacturer product information or part-ordering documentation.
