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Texas Instruments MSP430F2122TPW
- Part No.:
- MSP430F2122TPW
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430F2122TPW.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,907
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Product details
Overview
MSP430F2122TPW from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 4KB+256B 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 MSP430F2122TPW datasheet, MSP430F2122TPW pinout, MSP430F2122TPW application, or MSP430F2122TPW equivalent, key selection criteria include its -40°C to 105°C temperature grade, TSSOP-28 package, sub-1µs wake-up from standby (0.7 µA), integrated brownout detector, and dual USCI modules supporting LIN-compliant auto-baudrate detection.
Technical Context
The MSP430F2122TPW implements a 16-bit RISC CPU with constant generators and seven addressing modes, executing register-to-register operations in one CPU clock cycle. 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 full instruction set; interrupt handling uses fixed vector addresses from 0xFFFE to 0xFFC0. The device supports six operating modes (AM, LPM0–LPM4), with LPM4 drawing only 0.1 µA (RAM retention) and ultra-fast wake-up enabled by DCO stabilization in under 1 µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generators; enables high code efficiency and single-cycle register operations. |
| Flash / RAM | 4KB + 256B flash (main + info memory) and 512B RAM; supports in-system programming, BSL UART loading, and security fuse protection. |
| ADC Performance | 10-bit SAR ADC with 200-ksps sampling, internal 1.5V/2.5V reference, sample-and-hold, autoscan, and data transfer controller (DTC) for CPU-offload conversion sequences. |
| Power Modes | Active mode: 250 µA @ 1 MHz, 2.2 V; Standby: 0.7 µA; Off (RAM retention): 0.1 µA; wake-up from standby < 1 µs via DCO. |
| Communication | USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I2C); LIN support includes hardware auto-baudrate detection for automotive diagnostics. |
| Timers | Timer0_A3: 16-bit, 3 capture/compare registers, PWM, interval timing; Timer1_A2: 16-bit, 2 capture/compare registers, overflow/interrupt capability. |
| Operating Temp | -40°C to +105°C industrial temperature range; qualified for extended-life portable measurement and harsh-environment monitoring. |
Pinout & Package
Package: 28-pin TSSOP (PW), 9.7 mm × 4.4 mm body, 0.65 mm pitch, exposed thermal pad not present. Pinout validated per TI SLAS578J Rev J (2012) Table 2 and Device Pinout diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO (Pin 7) | Reset / Nonmaskable Interrupt / Spy-Bi-Wire I/O | Primary reset input; dual-function NMI source; bidirectional test interface for programming and debug using 2-wire JTAG subset. |
| P1.0/TACLK/ADC10CLK/CAOUT (Pin 21) | Timer/ADC/Comparator Output | Configurable timer clock input, ADC conversion clock source, or comparator output; enables synchronized analog-digital timing control. |
| P2.0/ACLK/A0/CA2 (Pin 8) | Low-Frequency Clock / ADC Input / Comparator Input | Provides ACLK source (e.g., 32-kHz crystal), analog channel A0 input, and comparator_A+ positive input - critical for precision low-power sensing. |
| XIN/P2.6/CA6 (Pin 6) & XOUT/P2.7/CA7 (Pin 5) | Crystal Oscillator Terminals | Dedicated inputs for 32-kHz watch crystal; enable ultra-stable low-power real-time clock operation independent of DCO drift. |
| P3.4/UCA0TXD/UCA0SIMO (Pin 15) & P3.5/UCA0RXD/UCA0SOMI (Pin 16) | USCI_A0 UART/SPI Data Lines | Full-duplex UART transmit/receive pins; also serve as SPI master-out/slave-in and slave-out/master-in - simplifies firmware reuse across protocols. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low-Power Operation | 0.1 µA off-mode current with RAM retention enables multi-year battery life in coin-cell-powered devices like environmental sensors. |
| Integrated Analog Front-End | 10-bit ADC with internal reference, DTC, and comparator_A+ allows autonomous analog signal acquisition and threshold detection without CPU intervention. |
| Dual USCI Modules | USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I2C) provide protocol flexibility for sensor interfacing, wireless MCU communication, and legacy bus integration. |
| Fast Wake-Up & Clock Agility | Sub-1 µs wake-up from standby via calibrated DCO eliminates latency in event-driven sensing; supports dynamic clock switching between ACLK, SMCLK, MCLK. |
| Robust Debug & Programming | Embedded Emulation Module (EEM) and Spy-Bi-Wire interface enable full-speed debugging and flash programming using MSP-FET430U28 target board (PW-package optimized). |
Applications
| Portable Gas Sensor Node | Industrial Temperature Monitor |
|---|---|
Use Scenario: Battery-operated handheld gas detector sampling electrochemical or NDIR sensors every 5 seconds, logging data to EEPROM, and transmitting alerts via UART. IC Role / Device Role / Timing Role: Central controller managing ADC sequencing, timer-based sampling intervals, LIN-compliant UART diagnostics, and ultra-low-power sleep/wake cycles. Use Value: 0.7 µA standby current extends CR2032 battery life beyond 2 years; integrated DTC automates 8-channel ADC scans without CPU wake-up. |
Use Scenario: DIN-rail mounted temperature logger in factory HVAC systems, reading RTD/thermistor bridges via precision ADC and reporting over RS-485 (via external transceiver). IC Role / Device Role / Timing Role: Signal conditioner and protocol bridge: performs ratiometric ADC measurements, applies calibration coefficients from info memory, and formats UART frames for RS-485 driver. Use Value: On-chip 1.5V/2.5V references and CAL_ADC_* tags in segment A eliminate external precision references; -40°C to 105°C rating ensures reliability in uncontrolled enclosures. |
| Smart Meter Tamper Detection | Wireless Sensor Hub Controller |
Use Scenario: Electricity meter sub-module detecting magnetic tampering via Hall-effect sensor, triggering secure event logging and optical pulse alerts. IC Role / Device Role / Timing Role: Dedicated tamper monitor: comparator_A+ continuously compares sensor output against threshold; wakes CPU only on violation. Use Value: Comparator_A+ with programmable hysteresis and interrupt-on-event reduces average power to < 1 µA; brownout detector prevents false triggers during voltage sags. |
Use Scenario: Sub-GHz IoT hub aggregating data from 10+ Zigbee/Z-Wave end devices, preprocessing sensor payloads, and forwarding via UART to host MCU. IC Role / Device Role / Timing Role: Protocol translation engine: USCI_B0 handles I2C/SPI sensor reads; USCI_A0 manages UART host interface; Timer0_A3 schedules polling intervals. Use Value: Dual USCI modules enable concurrent sensor polling and host communication; 512B RAM buffers burst data during RF transmission gaps. |
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 |
|---|---|---|---|
| MSP430F2132TPW | 8KB+256B flash, same RAM/peripherals/timing; higher code density for complex sensor fusion or bootloader + application. | Better suited for designs requiring larger firmware footprint, e.g., OTA update stacks or multi-sensor calibration algorithms. | Select when >4KB flash is needed; identical pinout and migration path from MSP430F2122TPW. |
| MSP430G2553IPW28 | 16KB flash, 512B RAM, enhanced USCI (UART/SPI/I2C), but no LIN auto-baudrate or DTC; 20MHz max DCO vs. 16MHz. | Lacks LIN compliance and autonomous ADC data transfer; requires more CPU overhead for sensor polling. | Choose for cost-sensitive, non-automotive applications where LIN and DTC are unnecessary; lower unit cost but less analog automation. |
Compared with MSP430F2122TPW, MSP430F2132TPW offers double flash capacity with zero layout change, while MSP430G2553IPW28 trades LIN/DTC capability for higher clock speed and lower price-making it viable only where those features are unused.
Availability
MSP430F2122TPW is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor nodes, and battery-powered metering applications requiring stable component supply across extended product lifecycles.
Supply support for MSP430F2122TPW 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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in ultra-low-power design.
The MSP430F21x2 series was engineered for extended-battery-life portable measurement systems, integrating precision analog peripherals, intelligent low-power modes, and robust debug infrastructure into compact packages.
FAQ
What is the maximum operating frequency of the MSP430F2122TPW DCO?
The MSP430F2122TPW DCO is factory-calibrated to deliver stable internal frequencies up to 16 MHz with ±1% accuracy at 3 V and 30°C. These calibrations are stored in information memory segment A and can be loaded at runtime to achieve precise clocking without external crystals for many applications. The MSP430F2122TPW supports direct configuration of DCOCLKDIV and DCOCTL registers to select among the four calibrated frequencies or fine-tune within ranges.
Does the MSP430F2122TPW support LIN physical layer communication?
Yes, the MSP430F2122TPW supports LIN 2.x physical layer communication through its USCI_A0 module, which implements enhanced UART with hardware auto-baudrate detection (LIN mode). This allows the MSP430F2122TPW to act as a LIN slave node without external transceivers for baud rate negotiation, reducing BOM cost and PCB area in automotive and industrial control networks.
How many analog input channels does the MSP430F2122TPW ADC10 support?
The MSP430F2122TPW ADC10 module supports eight analog input channels (A0–A7), mapped to P2.0, P2.1, P2.2, P2.3, P2.4, P3.0, P3.6, and P3.7. All channels are selectable via ADC10CTL1 and ADC10SA registers, and the autoscan feature enables sequential conversion of multiple channels with automatic result storage via the Data Transfer Controller (DTC).
What debug interfaces are supported by the MSP430F2122TPW?
The MSP430F2122TPW supports Spy-Bi-Wire (SBW) debug and programming via the RST/NMI/SBWTDIO and TEST/SBWTCK pins (Pins 7 and 1), compatible with TI's MSP-FET430UIF and MSP-FET430U28 tools. It does not support full 4-wire JTAG; SBW provides full-speed emulation, flash programming, and real-time breakpoint debugging using only two pins and minimal board space.
Is the MSP430F2122TPW pin-compatible with other MSP430F21x2 variants in TSSOP-28?
Yes, the MSP430F2122TPW shares identical pinout, electrical characteristics, and package dimensions with all other MSP430F21x2 family members offered in the 28-pin TSSOP (PW) package-including MSP430F2112TPW and MSP430F2132TPW. This enables direct substitution and scalable firmware development across flash-size variants without PCB redesign.
MSP430F2122TPW 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:
- Not 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F2122TPW FAQ
1.How can I place an order for MSP430F2122TPW through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2122TPW 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 MSP430F2122TPW reliable?
The price and inventory of MSP430F2122TPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2122TPW is usually 5 days.
3.What payment methods are accepted for MSP430F2122TPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2122TPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2122TPW?
MSP430F2122TPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2122TPW 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 MSP430F2122TPW?
For technical support, including MSP430F2122TPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2122TPW requirements.
6.How does Aetrix verify that MSP430F2122TPW is sourced from the original manufacturer or authorized distributors?
All MSP430F2122TPW 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 MSP430F2122TPW meets industry standards.
7.What is the process for return or replacement of MSP430F2122TPW?
All MSP430F2122TPW units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2122TPW, 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 MSP430F2122TPW part is unused and in its original packaging.
Return procedure for MSP430F2122TPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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