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Texas Instruments MSP430F2122IRHBR
- Part No.:
- MSP430F2122IRHBR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430F2122IRHBR.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,003
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Product details
Overview
MSP430F2122IRHBR 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 up to 24 GPIO pins - deployed in battery-powered sensor nodes and portable instrumentation requiring sub-1µs wake-up and <0.1µA off-mode retention.
For engineers reviewing the MSP430F2122IRHBR datasheet, MSP430F2122IRHBR pinout, MSP430F2122IRHBR application, or MSP430F2122IRHBR equivalent, key selection criteria include its 32-pin QFN (RHB) package, calibrated DCO supporting 1–16 MHz operation without external crystal, integrated comparator for slope A/D, brownout detection, and Spy-Bi-Wire debug interface compatibility with MSP-FET430UIF.
Technical Context
The MSP430F2122IRHBR implements a 16-bit CPU with seven addressing modes and constant generators for high code efficiency, paired with five software-selectable low-power modes (LPM0–LPM4) enabling µA-level active current (250 µA @ 1 MHz, 2.2 V) and nanowatt standby (0.7 µA) or off-mode (0.1 µA with RAM retention). Its clock system integrates a digitally controlled oscillator (DCO), 32-kHz LF oscillator, and HF crystal/resonator support up to 16 MHz.
Peripherals are memory-mapped and accessible via all CPU instructions: the ADC10 includes autoscan, sample-and-hold, and data transfer controller (DTC) for autonomous conversion sequences; Comparator_A+ supports analog signal compare and slope A/D; USCI modules provide protocol-flexible serial communication with LIN auto-baudrate detection and IrDA encoding/decoding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 62.5-ns instruction cycle time |
| Memory | 4KB + 256B flash (main + info memory), 512B RAM - supports in-system programming and BSL UART loading |
| ADC | 10-bit SAR ADC at 200 ksps with internal 1.5V/2.5V reference, sample-and-hold, autoscan, and DTC for zero-CPU-conversion chains |
| Timers | Timer0_A3 (16-bit, 3 capture/compare registers) and Timer1_A2 (16-bit, 2 capture/compare registers) with interrupt-capable overflow and compare events |
| Low-Power Modes | Active mode (250 µA @ 1 MHz), Standby (0.7 µA), Off mode with RAM retention (0.1 µA), wake-up <1 µs from LPM3/LPM4 |
| Communication | USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I2C); LIN supports auto-baudrate detection per ISO 9141-2 |
| Supply Range | 1.8 V to 3.6 V - enables direct Li-ion or coin-cell operation without external regulation |
Pinout & Package
Package: 32-pin QFN (RHB), 5 mm × 5 mm, 0.5 mm pitch, exposed thermal pad (connected to DVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK/ADC10CLK/CAOUT | Timer/ADC/Comparator output | Provides TACLK input, ADC conversion clock source, and Comparator_A+ output - configurable as GPIO |
| P1.1/TA0.0/TA1.0 | Timer capture/compare | Shared input for Timer0_A3 CCI0A and Timer1_A2 CCI0A - supports edge-triggered capture or PWM output |
| P1.4/SMCLK/TCK | System clock output / JTAG test | Drives SMCLK externally or serves as JTAG TCK during programming - critical for timing-critical peripherals |
| P2.0/ACLK/A0/CA2 | Low-frequency clock / ADC input | Outputs ACLK (32 kHz) or routes analog input A0 to ADC10 - dual-role pin enables clock-synchronized sampling |
| P2.6/XIN/CA6 & P2.7/XOUT/CA7 | Crystal oscillator terminals | Supports 32-kHz watch crystal or HF crystal up to 16 MHz - essential for precise timing and RTC applications |
| P3.4/UCA0TXD/UCA0SIMO & P3.5/UCA0RXD/UCA0SOMI | USCI_A0 UART/SPI I/O | Full-duplex UART TX/RX or SPI master-out/slave-in and slave-out/master-in - enables firmware updates over serial |
| RST/NMI/SBWTDIO | Reset / NMI / debug I/O | Single-pin Spy-Bi-Wire interface for programming and debugging - eliminates need for full 4-pin JTAG connector |
| DVCC / DVSS | Digital power supply | Separate digital VCC and ground pins - mandatory for noise-sensitive ADC and timer operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA off-mode with RAM retention enables multi-year battery life in wireless sensors |
| Integrated analog subsystem | 10-bit ADC with DTC and Comparator_A+ enable autonomous analog monitoring without CPU intervention |
| Calibrated DCO | Four factory-trimmed frequencies (1/8/12/16 MHz) ±1% accuracy eliminate need for external crystal in cost-sensitive designs |
| Protocol-flexible USCI | USCI_A0 and USCI_B0 support UART, LIN, IrDA, SPI, and I2C on shared pins - reduces BOM count and PCB footprint |
| Spy-Bi-Wire debug | Two-wire (SBWTDIO + SBWTCK) programming and emulation compatible with MSP-FET430UIF - simplifies production test and field updates |
| Brownout detection | On-chip voltage monitor triggers reset below programmable threshold - prevents erratic behavior during battery discharge |
Applications
| Wireless Sensor Node | Portable Medical Instrument |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data via UART-to-LoRa module every 5 minutes. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, DTC-driven data buffering, LIN-compatible wake-up signaling, and low-power sleep scheduling. Use Value: 0.1 µA off-mode extends CR2032 battery life beyond 5 years; calibrated DCO ensures accurate UART baud rates without crystal. |
Use Scenario: Handheld blood glucose meter with analog front-end, LCD display, and USB charging indicator. IC Role / Device Role / Timing Role: Signal acquisition controller using Comparator_A+ for slope A/D of electrochemical sensor output and ADC10 for reference voltage monitoring. Use Value: Integrated comparator and 10-bit ADC eliminate external precision op-amps and ADC ICs; 1.8–3.6 V supply matches LiPo charging profile. |
| Industrial Data Logger | Smart Utility Meter Interface |
Use Scenario: DIN-rail mounted logger recording voltage/current waveforms via isolated analog inputs at 1 ksps. IC Role / Device Role / Timing Role: Real-time data aggregator using Timer0_A3 PWM for isolation driver control and USCI_B0 I2C to external EEPROM. Use Value: Timer0_A3's three capture/compare registers enable simultaneous PWM generation and timestamped event capture; 512B RAM buffers burst samples. |
Use Scenario: Sub-metering module interfacing with main meter MCU via LIN bus and reporting consumption via RS-485. IC Role / Device Role / Timing Role: LIN protocol handler using USCI_A0 with auto-baudrate detection to adapt to variable master node speeds. Use Value: LIN-compliant UART eliminates need for external transceiver; 0.7 µA standby allows continuous bus monitoring without draining backup capacitor. |
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 |
|---|---|---|---|
| MSP430F2132IRHBR | 8KB+256B flash, same 512B RAM, identical peripherals and pinout - higher code capacity only | Required when firmware exceeds 4KB; no change to analog/timing/peripheral design | Select if future firmware expansion or bootloader space is needed - drop-in replacement with no layout or firmware modification |
| MSP430G2553IPW28 | 28-pin TSSOP, 16KB flash, 512B RAM, USCI_A0/B0, but no integrated comparator or LIN auto-baudrate | Lacks slope A/D capability and LIN support - unsuitable for battery-supervised analog sensing or automotive diagnostics | Choose for cost-sensitive, non-LIN, non-comparator applications where TSSOP packaging is preferred and flash headroom is critical |
Compared with MSP430F2132IRHBR, the MSP430F2122IRHBR trades flash capacity for lower unit cost while retaining identical analog performance and LIN capability; versus MSP430G2553IPW28, it provides essential comparator-based A/D and LIN compliance at the expense of package size and flash headroom.
Availability
MSP430F2122IRHBR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical instruments, and industrial data loggers requiring stable component supply across extended product lifecycles.
Supply support for MSP430F2122IRHBR 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 ultra-low-power MCU innovation.
The MSP430F21x2 series targets battery-operated measurement systems - designed for extended runtime, fast wake-up, and integrated analog signal chain functionality in compact form factors.
FAQ
What is the maximum operating frequency of the MSP430F2122IRHBR?
The MSP430F2122IRHBR supports up to 16 MHz operation via its factory-calibrated digitally controlled oscillator (DCO), with four trim points (1/8/12/16 MHz) accurate to ±1% at 2.2 V and 30°C. External crystal or resonator support extends HF clock options to 16 MHz, and the DCO stabilizes in under 1 µs - enabling rapid transitions from LPM3/LPM4 into full-speed active mode.
Does the MSP430F2122IRHBR support LIN bus communication?
Yes, the MSP430F2122IRHBR supports LIN 2.x communication through its USCI_A0 module, which implements enhanced UART with automatic baudrate detection (LIN autobaud) per ISO 9141-2. This allows the MSP430F2122IRHBR to act as a LIN slave node without external transceiver or baudrate configuration overhead - critical for automotive body electronics and smart sensor interfaces.
How many analog input channels does the ADC10 module support on the MSP430F2122IRHBR?
The ADC10 module on the MSP430F2122IRHBR 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. It features internal 1.5 V/2.5 V references, sample-and-hold, autoscan mode, and a data transfer controller (DTC) that autonomously stores conversion results to RAM - eliminating CPU polling in continuous acquisition scenarios.
What debug interface does the MSP430F2122IRHBR use, and is external hardware required?
The MSP430F2122IRHBR uses the two-wire Spy-Bi-Wire (SBW) interface via RST/NMI/SBWTDIO and TEST/SBWTCK pins for programming and debugging. No external JTAG header is needed - compatible programmers include the MSP-FET430UIF (USB) and MSP-FET430PIF (parallel). The SBW interface supports full flash erase/write, breakpoint setting, and real-time register inspection without requiring additional PCB footprint.
Can the MSP430F2122IRHBR operate from a single 3.0 V lithium coin cell?
Yes, the MSP430F2122IRHBR operates across 1.8 V to 3.6 V, making it fully compatible with standard 3.0 V CR2032 coin cells. Its 0.1 µA off-mode current with RAM retention and 0.7 µA standby mode allow multi-year operation in intermittent-sensing applications. Brownout detection prevents undefined behavior during cell discharge, and the internal DCO maintains timing accuracy without external components.
MSP430F2122IRHBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- MSP430F2xx
- Packaging:
- Tape & Reel (TR)
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F2122IRHBR FAQ
1.How can I place an order for MSP430F2122IRHBR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2122IRHBR 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 MSP430F2122IRHBR reliable?
The price and inventory of MSP430F2122IRHBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2122IRHBR is usually 5 days.
3.What payment methods are accepted for MSP430F2122IRHBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2122IRHBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2122IRHBR?
MSP430F2122IRHBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2122IRHBR 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 MSP430F2122IRHBR?
For technical support, including MSP430F2122IRHBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2122IRHBR requirements.
6.How does Aetrix verify that MSP430F2122IRHBR is sourced from the original manufacturer or authorized distributors?
All MSP430F2122IRHBR 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 MSP430F2122IRHBR meets industry standards.
7.What is the process for return or replacement of MSP430F2122IRHBR?
All MSP430F2122IRHBR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2122IRHBR, 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 MSP430F2122IRHBR part is unused and in its original packaging.
Return procedure for MSP430F2122IRHBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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