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Texas Instruments MSP430F2122IPW
- Part No.:
- MSP430F2122IPW
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430F2122IPW.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,957
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Product details
Overview
MSP430F2122IPW from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 4KB flash, 512B RAM, a 10-bit 200-ksps ADC with internal reference and DTC, two 16-bit timers (Timer0_A3 with three capture/compare registers, Timer1_A2 with two), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and comparator_A+. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the MSP430F2122IPW datasheet, MSP430F2122IPW pinout, MSP430F2122IPW application, or MSP430F2122IPW equivalent, key selection criteria include active-mode current (250 µA at 1 MHz, 2.2 V), standby current (0.7 µA), wake-up time (<1 µs), integrated analog peripherals, and TSSOP-28 package compatibility with legacy MSP430F2xx designs.
Technical Context
The MSP430F2122IPW implements a 16-bit CPU with seven addressing modes and constant generators for high code efficiency. Its basic clock module integrates a digitally controlled oscillator (DCO) calibrated to ±1% at four frequencies up to 16 MHz, plus support for 32-kHz crystal, HF crystal, resonator, or external digital clock sources.
Peripherals are memory-mapped and accessible via all CPU instructions. The USCI modules provide protocol-flexible serial communication: USCI_A0 supports UART with auto-baudrate detection (LIN), IrDA encoding/decoding, and synchronous SPI; USCI_B0 supports SPI and I²C. The ADC10 includes sample-and-hold, autoscan, and data transfer controller (DTC) for autonomous conversion sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle; register-to-register operations execute in one cycle. |
| Flash / RAM | 4KB + 256B flash memory and 512B RAM - sufficient for compact firmware with calibration data and real-time control logic. |
| ADC Performance | 10-bit, 200-ksps SAR ADC with internal reference, sample-and-hold, autoscan, and DTC - enables continuous multi-channel sensor acquisition without CPU intervention. |
| Power Modes | Active mode: 250 µA @ 1 MHz, 2.2 V; Standby: 0.7 µA; Off (RAM retention): 0.1 µA - optimized for intermittent sensing with rapid wake-up. |
| Timers | Timer0_A3 (3 capture/compare registers) and Timer1_A2 (2 capture/compare registers) - support PWM generation, input capture, interval timing, and event synchronization. |
| Communication | USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C) - dual independent serial interfaces for sensor interfacing and host communication. |
| Operating Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion, Li-polymer, and two-cell alkaline battery systems. |
Pinout & Package
Package: 28-pin TSSOP (PW), 9.7 mm × 4.4 mm, 0.65 mm pitch, surface-mount. Pin count and layout match TI's MSP430F21x2 family standard for drop-in compatibility across flash variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK/ADC10CLK/CAOUT | Timer/ADC/Comparator output | Provides timer clock input, ADC conversion clock source, and comparator output - enables synchronized analog-digital timing control. |
| P1.1/TA0.0/TA1.0 | Timer capture/compare | Dual-function pin supporting Timer0_A3 CCI0A and Timer1_A2 CCI0A - allows shared signal routing for multi-timer event handling. |
| P2.0/ACLK/A0/CA2 | Low-frequency clock/analog input | Delivers ACLK from 32-kHz crystal or LF oscillator while serving as ADC channel A0 and comparator input - consolidates timing and sensing resources. |
| P2.2/TA0.0/A2/CA4/CAOUT | Timer/ADC/Comparator I/O | Supports Timer0_A3 CCI0B, ADC input A2, comparator input CA4, and comparator output - enables flexible analog signal conditioning and feedback paths. |
| XIN/P2.6/CA6 & XOUT/P2.7/CA7 | Crystal oscillator interface | Dedicated differential inputs for 32-kHz watch crystal - provides stable low-power timing reference for RTC and sleep-mode intervals. |
| RST/NMI/SBWTDIO | Reset/test I/O | Combines power-on reset, non-maskable interrupt, and Spy-Bi-Wire debug I/O - reduces pin count while maintaining full programming and fault recovery capability. |
| P3.4/UCA0TXD/UCA0SIMO & P3.5/UCA0RXD/UCA0SOMI | USCI_A0 UART/SPI I/O | Full-duplex UART transmit/receive or SPI master-out/slave-in and master-in/slave-out - supports direct sensor telemetry or host command interface. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA off-mode current with RAM retention enables years of operation on coin-cell batteries in intermittent-sensing applications. |
| Integrated analog subsystem | 10-bit ADC with DTC, comparator_A+, and internal voltage reference eliminate external components for sensor signal chain integration. |
| Dual USCI modules | Independent USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C) allow concurrent communication with multiple peripherals without software arbitration. |
| Fast wake-up & DCO stability | <1 µs wake-up from standby and DCO calibrated to ±1% across voltage/temperature ensures deterministic real-time response and timing accuracy. |
| On-chip emulation & BSL | Embedded Emulation Module (EEM) and UART-based Bootstrap Loader enable field firmware updates and debugging without JTAG hardware. |
Applications
| Wireless Sensor Node | Portable Medical Instrument |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data via UART to BLE gateway. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, data processing, USCI_A0 UART transmission, and ultra-low-power sleep scheduling. Use Value: 0.7 µA standby current and <1 µs wake-up minimize energy per measurement cycle, extending 10-year battery life. | Use Scenario: Handheld blood glucose meter with analog front-end and LCD display. IC Role / Device Role / Timing Role: Signal acquisition controller performing 10-bit ADC conversions on electrochemical sensor output and driving segment LCD via GPIO. Use Value: Integrated 10-bit ADC with DTC and internal reference eliminates external op-amps and references, reducing BOM cost and board area. |
| Industrial Data Logger | Smart Utility Meter Interface |
Use Scenario: Remote environmental logger recording temperature, pressure, and light levels every 15 minutes. IC Role / Device Role / Timing Role: Low-power data concentrator using Timer1_A2 for precise interval timing and USCI_B0 I²C to read multi-sensor submodules. Use Value: Dual timer architecture allows independent scheduling of sensor polling and radio wake-up, avoiding CPU contention during critical timing windows. | Use Scenario: Pulse-output interface between mechanical utility meter and smart meter MCU. IC Role / Device Role / Timing Role: Edge-triggered pulse counter using P1.x interrupt pins and Timer0_A3 capture registers to measure kWh pulses with timestamp resolution. Use Value: Hardware capture/compare registers provide jitter-free pulse counting without software overhead, ensuring metrology-grade accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F2132IPW | 8KB flash, same RAM, peripherals, and package - higher code capacity without layout change. | Suitable for applications requiring larger firmware (e.g., enhanced security stack or protocol stacks). | Select when future firmware growth or feature expansion is anticipated; identical pinout and power profile simplify migration. |
| MSP430G2553IPW | 16KB flash, 512B RAM, same TSSOP-24 pinout but different peripheral mapping and no built-in LIN support. | Targets cost-sensitive designs needing more flash but tolerating reduced analog integration and no auto-baudrate UART. | Choose for new designs prioritizing flash headroom over analog precision; requires PCB redesign due to 24-pin vs. 28-pin footprint. |
Compared with MSP430F2132IPW, the MSP430F2122IPW trades flash capacity for lower unit cost while retaining identical analog performance and power behavior; versus MSP430G2553IPW, it offers superior ADC integration and LIN-ready UART at the expense of flash size and pin compatibility.
Availability
MSP430F2122IPW is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical instruments, and industrial data loggers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MSP430F2122IPW includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions with emphasis on power efficiency, reliability, and broad ecosystem support.
The MSP430F21x2 product line delivers ultra-low-power mixed-signal microcontrollers targeting battery-operated measurement, sensing, and control applications where extended runtime and integrated analog functionality are critical.
FAQ
What is the maximum operating frequency of the MSP430F2122IPW?
The MSP430F2122IPW supports internal DCO frequencies up to 16 MHz, calibrated to ±1% at four points. External clock sources-including HF crystals up to 16 MHz, 32-kHz crystals, or digital clocks-can also drive the system. The CPU executes instructions at 62.5-ns cycle time, enabling deterministic real-time control at full speed. MSP430F2122IPW maintains timing integrity across its 1.8–3.6 V supply range and –40°C to 85°C ambient temperature.
Does the MSP430F2122IPW support LIN bus communication?
Yes, the MSP430F2122IPW supports LIN bus communication through USCI_A0's enhanced UART mode with hardware auto-baudrate detection. This feature allows the MSP430F2122IPW to automatically synchronize to incoming LIN header signals without prior knowledge of baud rate, simplifying slave-node implementation in automotive and industrial networks. MSP430F2122IPW does not require external transceivers for physical layer compliance but must be paired with a LIN transceiver IC for bus-level signaling.
How much SRAM and flash memory does the MSP430F2122IPW include?
The MSP430F2122IPW integrates 512 bytes of RAM and 4KB of main flash memory plus 256 bytes of information flash memory. The information memory stores factory-calibrated DCO and ADC parameters and supports user-defined data storage. This memory configuration balances code space for compact firmware with sufficient runtime variables for sensor buffering and state management. MSP430F2122IPW's flash supports in-system programming via JTAG or UART-based BSL.
What development tools are compatible with the MSP430F2122IPW?
The MSP430F2122IPW is supported by TI's MSP-FET430UIF (USB) and MSP-FET430PIF (parallel port) debuggers, as well as the MSP-FET430U28 target board designed specifically for the 28-pin TSSOP package. Code development is enabled by TI's Code Composer Studio IDE and naken430gcc open-source toolchain. MSP430F2122IPW also supports in-circuit debugging via its integrated Embedded Emulation Module (EEM) and Spy-Bi-Wire interface using only two pins.
Is the MSP430F2122IPW RoHS compliant and qualified for industrial temperature range?
Yes, the MSP430F2122IPW is RoHS compliant and rated for operation from –40°C to +85°C, meeting industrial-grade environmental requirements. The device is manufactured in TI's qualified facilities and conforms to TI's standard warranty and reliability specifications. Packaging uses lead-free, halogen-free materials, and the TSSOP-28 (PW) package meets JEDEC moisture sensitivity level 3 (MSL-3). MSP430F2122IPW is not qualified for automotive AEC-Q100 stress testing.
MSP430F2122IPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430F2xx
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 24
- Program Memory Size:
- 4KB (4K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F2122IPW FAQ
1.How can I place an order for MSP430F2122IPW through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2122IPW on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MSP430F2122IPW reliable?
The price and inventory of MSP430F2122IPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2122IPW is usually 5 days.
3.What payment methods are accepted for MSP430F2122IPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2122IPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2122IPW?
MSP430F2122IPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2122IPW order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MSP430F2122IPW?
For technical support, including MSP430F2122IPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2122IPW requirements.
6.How does Aetrix verify that MSP430F2122IPW is sourced from the original manufacturer or authorized distributors?
All MSP430F2122IPW products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MSP430F2122IPW meets industry standards.
7.What is the process for return or replacement of MSP430F2122IPW?
All MSP430F2122IPW units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2122IPW, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MSP430F2122IPW part is unused and in its original packaging.
Return procedure for MSP430F2122IPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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