MSP430F122IPW - 16-Bit 8MHz Mixed-Signal MCU | Texas Instruments
料号： MSP430F122IPW ✓ 量产中MSP430F122IPW 概述
A microcontroller is a programmable semiconductor that integrates a processor core, memory, and peripherals into one device. The MSP430 belongs to the mixed-signal microcontroller category, combining digital control with an analog comparator and communication peripherals. Its architecture is designed for battery-powered and energy-conscious instrumentation, where low-power states and fast wake-up behavior can reduce average energy consumption.
The MSP430F122 provides a 16-bit RISC core with a maximum 8 MHz clock, 4 KB Flash for program storage, and 256 bytes of SRAM for working data. Its integrated peripherals include a 16-bit timer, versatile analog comparator, SPI interface, and UART. Twenty-two I/O pins provide connections for sensors, switches, displays, actuators, and serial communications. The available verified product information identifies the MSP430F12x series as an ultra-low-power mixed-signal MCU with built-in communication capability.
The MSP430 architecture executes compact instructions and provides multiple low-power operating modes. This makes it useful in embedded designs that spend most of their time monitoring inputs rather than continuously calculating. Its mixed-signal resources can reduce external component count when the design needs threshold detection, timing, or simple serial connectivity. The manufacturer product page specifically identifies a timer, comparator, SPI, and UART for the MSP430F122 device.
Typical applications include low-power sensor nodes, industrial control modules, battery-powered instruments, data acquisition systems, and compact embedded products with local serial communication. The 28-pin TSSOP package is also suitable for prototypes and moderate-density control boards where a through-hole-style lead spacing simplifies assembly and inspection.
Designers should verify the complete pinout, clock configuration, reset requirements, and operating limits against the manufacturer datasheet before layout. The exact supply-voltage range, current consumption by mode, temperature range, and detailed pin assignments were not present in the supplied verified data and therefore require confirmation. This page distinguishes documented facts from parameters that still need datasheet verification.
直接替换替代料： MSP430F122IPW ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MSP430F122IPW （相同外形与封装尺寸） ——差异在于 Flash Memory.
MSP430F123IPW
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →MSP430F121IPW
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MSP430F123IPWR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MSP430F121IPWR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MSP430F122IPW 最大额定值与电气特性
| Microcontroller Type | 16-bit RISC mixed-signal microcontroller |
| 最大时钟频率 | 8 MHz |
| Flash Memory | 4 KB |
| Program Memory Organization | 4K x 8 bytes |
| SRAM | 256 bytes |
| General-Purpose I/O Pins | 22 pins |
| Integrated Timer | 16-bit timer |
| Analog Peripherals | 1 analog comparator |
| Synchronous Serial Interface | SPI |
| Asynchronous Serial Interface | UART |
| Architecture | 16-bit RISC |
| Power Class | Ultra-low-power |
| 封装 | 28-pin TSSOP (PW) |
| 安装类型 | Surface mount |
MSP430F122IPW 28-pin tssop (pw) 引脚配置指南
MSP430F122IPW（28-pin tssop (pw) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： MSP430F122IPW.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MSP430F122IPW 适用于 6 应用s: Battery-Powered Sensor Node, Industrial Control Module, Portable Measurement Instrument, SPI Sensor Interface, UART-Based Configuration Interface, Low-Power Data Acquisition.
Battery-Powered Sensor Node
The MSP430F122IPW fits a compact sensor node because its 16-bit RISC core operates at up to 8 MHz while the MSP430F12x family supports low-power operating states. The 22 I/O pins can accommodate digital sensors, indicators, and control signals, while the analog comparator can perform threshold or simple mixed-signal functions. A typical design would sleep between measurements, wake for periodic sampling, and transmit results through the integrated UART or SPI. The practical benefit is a compact 28-pin TSSOP solution with firmware and data memory sized for modest embedded logic. Actual battery-life calculations still require verified current-consumption values for every active and standby state.
推荐
Industrial Control Module
The MSP430F122IPW is appropriate for a small industrial control module requiring deterministic embedded logic, status inputs, actuator outputs, and local diagnostics. Its 16-bit timer can support periodic scheduling or timing functions, while 22 I/O pins leave flexibility for switches, relays, indicators, and interlocks. The integrated UART permits connection to a host or service interface, and SPI can connect to sensors or display peripherals. Operating from a regulated industrial rail, the device avoids the memory overhead of a general-purpose application processor. Engineers should verify input tolerances, supply limits, and any industrial qualification requirements before deploying the controller in field equipment.
推荐
Portable Measurement Instrument
The MSP430F122IPW can serve as the control core of a portable measurement instrument where low energy use, a modest user interface, and local data handling are more important than high processing throughput. Its 256 bytes of SRAM accommodate short-term samples and working variables, while 4 KB of Flash holds a focused acquisition and display routine. The built-in comparator can implement level detection around an analog signal, and the timer can organize periodic measurements. The SPI or UART interface can connect to a sensor front end or host computer. Because the 28-pin TSSOP package is compact but not the smallest possible package, board-space savings should be balanced against assembly cost and connector density.
推荐
SPI Sensor Interface
The MSP430F122IPW is suitable for reading a local SPI sensor when the design requires a compact mixed-signal controller without an external serial transceiver. The integrated SPI interface reduces component count, while the 22 available I/O pins can provide chip-select, interrupt, and status signals for the sensor. A typical acquisition loop can use the 16-bit timer for a stable sampling interval and the comparator for simple threshold events, leaving the UART available for configuration or diagnostic output. The 8 MHz maximum clock and 4 KB of Flash are sufficient for focused firmware, although complex filtering, large frame buffers, or high-rate logging may exceed the available SRAM.
推荐
UART-Based Configuration Interface
The MSP430F122IPW is a practical choice when an embedded product needs a simple UART command interface for configuration, diagnostics, or firmware-related communication. The on-chip UART reduces the need for an external serial transceiver, leaving the timer and comparator available for measurement or control tasks. Its 22 I/O pins provide flexibility for status LEDs, user inputs, and peripheral selection, while the 28-pin TSSOP package supports compact control boards. For a product exposed to electrical transients or long cable runs, the MCU-side UART should be paired with an appropriate protection and isolation interface rather than relying on the microcontroller pins alone.
推荐
Low-Power Data Acquisition
The MSP430F122IPW can support a low-power data-acquisition subsystem that combines periodic sampling, threshold detection, and short-range serial transfer. Its 16-bit timer provides a convenient timing reference, the analog comparator can detect a sensor crossing a threshold, and the 256-byte SRAM can hold a limited sample buffer. The MCU's low-power architecture is valuable when samples are collected intermittently rather than continuously. Designers should confirm comparator behavior, timer resources, and wake-up timing in the manufacturer datasheet, and should avoid allocating buffers beyond the verified 256-byte SRAM. This device is best suited to targeted measurements rather than high-throughput waveform capture.
推荐
推荐产品汇总
工程参考数据： MSP430F122IPW ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MSP430F123IPW | MSP430F121IPW | MSP430F123IPWR | MSP430F121IPWR |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-pin TSSOP (PW) | 28-pin TSSOP (PW) - same footprint | 28-pin TSSOP (PW) - same footprint | 28-pin TSSOP (PW) - same footprint | 28-pin TSSOP (PW) - same footprint |
| Processor Architecture | 16-bit RISC | 16-bit RISC MSP430 architecture | 16-bit RISC MSP430 architecture | 16-bit RISC MSP430 architecture | 16-bit RISC MSP430 architecture |
| Maximum Clock Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Flash Memory | 4 KB | More Flash than MSP430F122 | Less Flash than MSP430F122 | More Flash than MSP430F122 | Less Flash than MSP430F122 |
| Integrated Communications | SPI and UART | SPI and UART in MSP430F12x family | SPI and UART in MSP430F12x family | SPI and UART in MSP430F12x family | SPI and UART in MSP430F12x family |
| Analog and Timing Resources | Analog comparator and 16-bit timer | Analog comparator and 16-bit timer | Analog comparator and 16-bit timer | Analog comparator and 16-bit timer | Analog comparator and 16-bit timer |
| Power Class | Ultra-low-power MSP430F12x | Ultra-low-power MSP430F12x | Ultra-low-power MSP430F12x | Ultra-low-power MSP430F12x | Ultra-low-power MSP430F12x |
关键差异点
- Balanced MSP430F12x resource set for compact embedded control （对比 ATMEGA328P-MNR)
- More program-memory growth path than the lower-memory same-family option （对比 MSP430F121IPW)
- Integrated mixed-signal resources reduce external support components （对比 ATMEGA328P-ANR)
设计说明
Use the official Texas Instruments pin configuration diagram before assigning the 28 TSSOP pins. The supplied verified data confirms the package and 22 I/O pins but does not provide pin names, so power, ground, reset, clock, and peripheral assignments must not be inferred from a generic MSP430 layout. Preserve access to test points for supply voltage, reset, and serial debug, and place required decoupling capacitors close to the device pins according to the manufacturer guidance.
Calculate average energy use from the MCU's active and low-mode currents, which were not included in the supplied verified data. For a periodic task, the average current is the weighted sum of each state's current and duration. Confirm that the regulator can support peak active current, the battery can tolerate the sleep-state floor, and the 4 KB Flash and 256-byte SRAM are adequate for the intended firmware. Avoid designing from generic MSP430 current values.
Do not assume that any 28-pin microcontroller is a drop-in replacement. Software portability requires matching the MSP430 instruction set, interrupt-vector layout, timer resources, UART behavior, SPI modes, comparator registers, clock configuration, and memory map. A same-family MSP430F12x candidate is the safer starting point, but its datasheet and ordering information must be checked before substituting it into an existing MSP430F122IPW layout.
合规信息
The supplied verified product snippets do not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. These values must be confirmed from the current Texas Instruments product and quality documentation. AEC-Q100 is not applicable because this is a general-purpose microcontroller rather than an automotive-qualified device designation in the supplied data.
