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Texas Instruments MSP430F2122IPWR
- Part No.:
- MSP430F2122IPWR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430F2122IPWR.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,416
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Product details
Overview
MSP430F2122IPWR 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 targets battery-powered sensor nodes and portable instrumentation requiring sub-1µs wake-up and <0.1µA off-mode retention.
For engineers reviewing the MSP430F2122IPWR datasheet, MSP430F2122IPWR pinout, MSP430F2122IPWR application, or MSP430F2122IPWR equivalent, key selection criteria include its 28-pin TSSOP package, integrated DCO with ±1% calibration, brownout detection, Spy-Bi-Wire debug interface, and dual-USCI serial flexibility for mixed-protocol embedded systems.
Technical Context
The MSP430F2122IPWR implements a 16-bit CPU with seven addressing modes and 51-instruction set, executing register-to-register operations in one CPU clock cycle. Its basic clock module delivers ACLK, SMCLK, and MCLK from multiple sources: internal DCO (calibrated to ±1% at 1/8/12/16 MHz), 32-kHz crystal, HF crystal up to 16 MHz, or external resistor/clock.
Peripherals are memory-mapped and accessible via all instructions. The ADC10 uses a SAR core with sample-and-hold, autoscan, and data transfer controller (DTC) for autonomous conversion sequencing. Comparator_A+ supports slope ADC and analog monitoring, while USCI modules provide protocol-flexible serial communication without CPU intervention during transfers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generators for optimized code efficiency |
| Flash / RAM | 4KB + 256B flash program memory and 512B RAM - sufficient for compact firmware with real-time ISR handling |
| ADC Performance | 10-bit, 200-ksps SAR ADC with internal reference, sample-and-hold, autoscan, and DTC - enables unattended multi-channel sensing |
| Power Modes | Active mode: 250 µA @ 1 MHz, 2.2 V; Standby: 0.7 µA; Off (RAM retention): 0.1 µA - extends coin-cell life to years |
| Wake-up Time | <1 µs from standby to active mode - critical for responsive event-driven sensing in low-duty-cycle systems |
| Clock Sources | Digital-controlled oscillator (DCO) with four factory-calibrated frequencies (±1%), plus 32-kHz crystal, HF crystal, or external resistor - eliminates need for external crystals in many designs |
| Serial Interfaces | USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I2C) - supports simultaneous asynchronous and synchronous communication on separate buses |
Pinout & Package
Package: 28-pin TSSOP (PW), body size 9.7 × 4.4 mm, 0.65 mm pitch, RoHS-compliant, thermal pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK/ADC10CLK/CAOUT | Timer/ADC/Comparator output | Provides timer clock input, ADC conversion trigger, and comparator output - enables synchronized timing across analog/digital domains |
| P1.1/TA0.0/TA1.0 | Timer capture/compare | Shared input for Timer0_A3 CCI0A and Timer1_A2 CCI0A - supports dual-timer event chaining or independent PWM generation |
| P2.0/ACLK/A0/CA2 | Low-frequency clock/analog input | Routes ACLK (e.g., from 32-kHz crystal) and serves as ADC channel A0 and comparator input - integrates timekeeping and sensing |
| P2.2/TA0.0/A2/CA4/CAOUT | Timer/ADC/Comparator I/O | Supports Timer0_A3 CCI0B, ADC A2, comparator input CA4, and output CAOUT - enables analog signal conditioning with hardware-triggered capture |
| P3.4/UCA0TXD/UCA0SIMO | USCI_A0 transmit/data out | UART TX or SPI master-out/slave-in - selectable per mode; essential for host communication or sensor data streaming |
| P3.5/UCA0RXD/UCA0SOMI | USCI_A0 receive/data in | UART RX or SPI master-in/slave-out - pairs with P3.4 for full-duplex UART or 3-wire SPI operation |
| RST/NMI/SBWTDIO | Reset/debug I/O | Active-low reset, non-maskable interrupt, and Spy-Bi-Wire debug data I/O - single-pin JTAG-lite interface reduces debug footprint |
| TEST/SBWTCK | Debug clock input | Test clock for Spy-Bi-Wire programming and emulation - enables in-system flash programming without dedicated JTAG header |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power operation | 0.1 µA off-mode with RAM retention enables decade-scale battery life in energy-harvesting or coin-cell applications |
| Integrated DCO with factory calibration | Four calibrated frequencies (1/8/12/16 MHz) accurate to ±1% at 2.2 V and 30°C - eliminates external crystal for cost-sensitive timing |
| Data Transfer Controller (DTC) | Automatically moves ADC results to memory without CPU wake-up - reduces active time and power by >30% in periodic sampling |
| Enhanced UART with auto-baudrate detection | Supports LIN bus physical layer compliance - simplifies integration into automotive body electronics and industrial networks |
| On-chip comparator for slope ADC | Enables high-resolution analog measurement using RC charging time - replaces external ADC in low-cost voltage/current monitoring |
| Bootstrap loader (BSL) | UART-based flash programming with password protection - allows field firmware updates without JTAG hardware |
Applications
| Smart Sensor Node | Portable Medical Instrument |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data via UART to gateway every 10 seconds. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, DTC-buffered result storage, USCI_A0 UART transmission, and ultra-low-power sleep scheduling. Use Value: 0.1 µA off-mode and <1 µs wake-up minimize duty cycle; integrated DCO avoids crystal BOM cost; BSL enables remote firmware patching. |
Use Scenario: Handheld blood glucose meter with analog front-end, LCD display, and USB-to-UART bridge. IC Role / Device Role / Timing Role: Signal acquisition controller performing slope ADC on test strip current, driving segment LCD, and managing UART communication to PC. Use Value: Comparator_A+ + DTC enables precise, low-power analog measurement; 512B RAM buffers waveform data; brownout detector ensures reliable shutdown during battery depletion. |
| Industrial Control Interface | Energy Metering Subsystem |
Use Scenario: DIN-rail mounted I/O module converting 4–20 mA sensor inputs to Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol translator and analog conditioner using USCI_B0 (I2C) for local sensor reads and USCI_A0 (UART) for Modbus framing. Use Value: Dual USCI modules enable concurrent I2C sensor polling and UART Modbus transmission; 24 I/O pins support digital status LEDs and relay control. |
Use Scenario: Tamper-resistant kWh meter subsystem measuring voltage/current via shunt/resistive divider and logging data hourly. IC Role / Device Role / Timing Role: Precision analog acquisition unit using ADC10 with internal reference and autoscan across 8 channels, storing results in flash via DTC. Use Value: 10-bit ADC with internal 2.5V reference eliminates external precision reference IC; brownout detection prevents corrupted flash writes during brownout events. |
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 |
|---|---|---|---|
| MSP430F2132IPWR | 8KB+256B flash, same peripherals and pinout - direct upgrade path for larger firmware | Required when application firmware exceeds 4KB or needs additional code space for future features | Select when firmware growth headroom or bootloader partitioning is needed; identical layout and driver compatibility |
| MSP430G2553IPW | Same 28-pin TSSOP package but newer G-series silicon: 16KB flash, 512B RAM, enhanced USCI, no factory DCO calibration | Lacks ±1% DCO calibration; requires external crystal or software tuning for precise timing | Choose for cost-sensitive designs needing more flash and modern toolchain support; verify timing-critical functions with external clock source |
Compared with MSP430F2122IPWR, MSP430F2132IPWR offers seamless firmware scalability within identical power/performance envelope, while MSP430G2553IPW trades factory DCO accuracy for higher memory density and broader IDE support - both require no PCB changes but differ in timing assurance and development tool maturity.
Availability
MSP430F2122IPWR is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical instruments, and industrial control interfaces requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MSP430F2122IPWR 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 and industrial-grade reliability.
The MSP430F21x2 product line was engineered specifically for battery-operated measurement and sensing applications demanding nanowatt-level power management, fast wake-up, and integrated analog peripherals - enabling compact, long-life embedded systems without external support components.
FAQ
What is the maximum operating frequency of the MSP430F2122IPWR's DCO?
The MSP430F2122IPWR's digitally controlled oscillator (DCO) is factory-calibrated to four frequencies: 1 MHz, 8 MHz, 12 MHz, and 16 MHz, each accurate to ±1% at 2.2 V and 30°C. While the DCO can be tuned beyond these points, only these four values are guaranteed by TI's characterization. The 16 MHz setting is the highest calibrated frequency supported by the MSP430F2122IPWR for reliable operation across its specified voltage and temperature range.
Does the MSP430F2122IPWR support hardware UART autobaud detection?
Yes, the MSP430F2122IPWR's USCI_A0 module implements enhanced UART with automatic baudrate detection, fully supporting LIN 2.0 physical layer requirements. This feature allows the MSP430F2122IPWR to detect incoming LIN header break fields and synchronize to unknown baud rates without CPU intervention - a capability confirmed in the SLAS578J datasheet Section 1 "Features" and USCI functional description.
How many I/O pins does the MSP430F2122IPWR provide in the TSSOP package?
The MSP430F2122IPWR in the 28-pin TSSOP (PW) package provides 24 usable I/O pins across Ports P1 (8 pins), P2 (8 pins), and P3 (8 pins). All pins are individually configurable as digital inputs/outputs with programmable pullup/pulldown resistors and edge-selectable interrupts on P1 and P2 - matching the device's stated "up to 24 I/O pins" specification in the datasheet description.
Can the MSP430F2122IPWR perform ADC conversions without CPU involvement?
Yes, the MSP430F2122IPWR's ADC10 module includes a Data Transfer Controller (DTC) that automatically stores conversion results in memory after each sample, without CPU wake-up or instruction execution. When configured with autoscan and DTC enabled, the MSP430F2122IPWR can acquire sequences of up to eight channels continuously - a documented capability used in low-power sensor polling applications per Section "ADC10" in SLAS578J.
Is Spy-Bi-Wire debugging supported on the MSP430F2122IPWR?
Yes, the MSP430F2122IPWR supports full Spy-Bi-Wire (SBW) debug and programming via the RST/NMI/SBWTDIO (Pin 7) and TEST/SBWTCK (Pin 1) pins. This two-wire interface enables in-system flash programming, breakpoints, and real-time variable inspection using standard tools like MSP-FET430UIF - confirmed in the "Development Tool Support" section and pin function table of the SLAS578J datasheet.
MSP430F2122IPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430F2xx
- Packaging:
- Tape & Reel (TR)
- 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:
MSP430F2122IPWR FAQ
1.How can I place an order for MSP430F2122IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2122IPWR 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 MSP430F2122IPWR reliable?
The price and inventory of MSP430F2122IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2122IPWR is usually 5 days.
3.What payment methods are accepted for MSP430F2122IPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2122IPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2122IPWR?
MSP430F2122IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2122IPWR 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 MSP430F2122IPWR?
For technical support, including MSP430F2122IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2122IPWR requirements.
6.How does Aetrix verify that MSP430F2122IPWR is sourced from the original manufacturer or authorized distributors?
All MSP430F2122IPWR 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 MSP430F2122IPWR meets industry standards.
7.What is the process for return or replacement of MSP430F2122IPWR?
All MSP430F2122IPWR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2122IPWR, 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 MSP430F2122IPWR part is unused and in its original packaging.
Return procedure for MSP430F2122IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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