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Texas Instruments MSP430F2112IRHBT
- Part No.:
- MSP430F2112IRHBT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430F2112IRHBT.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:256
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Product details
Overview
MSP430F2112IRHBT from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 2 KB flash, 256 B 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 I/O pins - deployed in portable battery-powered sensor nodes and energy-harvesting endpoints.
For engineers reviewing the MSP430F2112IRHBT datasheet, MSP430F2112IRHBT pinout, MSP430F2112IRHBT application, or MSP430F2112IRHBT equivalent, key selection criteria include active-mode current at 1 MHz (250 µA), standby current (0.7 µA), brownout detection, integrated comparator for slope A/D, and QFN-32 package compatibility with space-constrained PCB layouts.
Technical Context
The MSP430F2112IRHBT implements a digitally controlled oscillator (DCO) calibrated to ±1% across four frequencies (up to 16 MHz), enabling sub-1-µs wake-up from LPM4. Its clock system delivers ACLK, SMCLK, and MCLK from internal LF oscillator, external crystal (32 kHz or HF up to 16 MHz), or resistor-tuned DCO.
Peripherals are memory-mapped and fully accessible via all CPU instructions. The USCI modules support simultaneous UART (with LIN auto-baud), IrDA, SPI, and I²C - with independent interrupt vectors and dedicated data transfer controllers (e.g., ADC10 DTC) to offload CPU during conversion sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers; 62.5-ns instruction cycle at 16 MHz enables deterministic real-time control loops. |
| Flash / RAM | 2 KB + 256 B flash memory with in-system programmability; 256 B RAM retains state in LPM3/LPM4 - sufficient for lightweight firmware and sensor buffer storage. |
| ADC Performance | 10-bit SAR ADC with 200-ksps sampling rate, internal 1.5 V/2.5 V reference, sample-and-hold, autoscan, and DTC - supports continuous multi-channel acquisition without CPU intervention. |
| Power Modes | Active mode: 250 µA @ 1 MHz, 2.2 V; Standby: 0.7 µA; Off mode (RAM retention): 0.1 µA - optimized for intermittent sensing with long sleep intervals. |
| Timers | Timer0_A3 (3 capture/compare registers) and Timer1_A2 (2 capture/compare registers) support PWM generation, input capture, interval timing, and synchronized event triggering. |
| Communication | USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C) with independent clock sources, FIFO-like buffering, and configurable interrupts - enables dual-protocol connectivity on shared pins. |
| Supply Range | 1.8 V to 3.6 V operation - compatible with single-cell Li-ion, LiFePO₄, or two-cell alkaline battery systems without external regulation. |
Pinout & Package
Package: 32-pin QFN (RHB), 5 mm × 5 mm, 0.5 mm pitch, exposed thermal pad (connected to DVSS). Pinout validated per TI SLAS578J Rev J, Table 2 and Device Pinout diagram for RHB package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO (Pin 5) | Reset / Nonmaskable Interrupt / Spy-Bi-Wire I/O | Primary reset input; also serves as NMI source and bidirectional debug interface for programming and emulation - requires pullup for reliable startup. |
| P1.0/TACLK/ADC10CLK/CAOUT (Pin 21) | Timer/ADC/Comparator Output | Configurable as timer clock input, ADC conversion clock source, or comparator output - enables synchronized analog-digital timing control. |
| P2.0/ACLK/A0/CA2 (Pin 6) | Low-Frequency Clock / ADC Input / Comparator Input | Provides ACLK source from external 32-kHz crystal or internal oscillator; also functions as ADC channel A0 and comparator input - critical for low-power RTC and sensor monitoring. |
| P3.4/UCA0TXD/UCA0SIMO (Pin 13) | USCI_A0 Transmit / SPI Master Out | Dual-role pin for UART transmit or SPI master data output - simplifies board routing when both protocols are used in sequence. |
| P3.5/UCA0RXD/UCA0SOMI (Pin 14) | USCI_A0 Receive / SPI Master In | Receives UART data or SPI slave output - paired with P3.4 for full-duplex serial communication with minimal pin count. |
| DVCC (Pin 30) / DVSS (Pin 1) | Digital Power Supply / Ground | Separate digital supply and ground pins reduce noise coupling into sensitive analog peripherals like ADC and comparator. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low-Power Operation | 0.1 µA off-mode current with RAM retention enables >10-year battery life in coin-cell-powered IoT endpoints. |
| Integrated Analog Peripherals | 10-bit ADC with internal reference and DTC + comparator_A+ eliminates need for external signal conditioning in voltage-monitoring and thermistor-readout applications. |
| Flexible Clock System | Four factory-calibrated DCO frequencies (1/8/12/16 MHz) and multiple clock sources allow dynamic frequency scaling without external crystals - reducing BOM cost and board area. |
| On-Chip Emulation | Embedded Emulation Module (EEM) supports full-speed debugging and flash programming via Spy-Bi-Wire using only RST and TEST pins - no dedicated JTAG header required. |
| Programmable Security | Bootstrap loader with password protection and security fuse prevents unauthorized code readout or flash modification - essential for firmware IP protection. |
Applications
| Smart Sensor Node | Battery Management Unit |
|---|---|
|
Use Scenario: Wireless temperature/humidity node powered by CR2032 coin cell, transmitting data every 5 minutes via UART-to-LoRa module. IC Role / Device Role / Timing Role: Main controller executing sensor polling, ADC conversion, data formatting, and low-power UART transmission; uses LPM4 between samples with sub-1-µs wake-up. Use Value: 0.1 µA off-mode current extends battery life beyond 5 years; integrated ADC and comparator eliminate external signal chain components. |
Use Scenario: Single-cell Li-ion pack monitor measuring cell voltage, charge/discharge current, and temperature for portable power tools. IC Role / Device Role / Timing Role: Analog front-end controller performing periodic voltage sampling (A0–A7), slope-based overvoltage detection via comparator_A+, and fault-triggered interrupt response. Use Value: Internal 1.5 V/2.5 V ADC reference ensures stable measurement accuracy across temperature; brownout detector prevents erratic behavior during voltage sag. |
| Energy-Harvesting Transmitter | Industrial Control Interface |
|
Use Scenario: Solar-powered environmental sensor harvesting µW-level energy, storing in supercapacitor, and waking periodically to measure light/UV and transmit via UART. IC Role / Device Role / Timing Role: Energy-aware scheduler managing capacitor charge level, initiating ADC conversions only when sufficient energy is available; uses DCO auto-calibration to maintain timing accuracy despite supply variation. Use Value: 1.8 V minimum operating voltage allows operation down to near-dead battery states; USCI_A0 LIN mode supports robust communication in electrically noisy environments. |
Use Scenario: DIN-rail mounted PLC I/O module reading 4–20 mA current loop inputs and driving discrete outputs via optocouplers. IC Role / Device Role / Timing Role: Isolated interface controller handling analog input scaling, digital I/O state management, and Modbus RTU framing over RS-485 via USCI_A0 UART. Use Value: 24 GPIO pins with individually configurable pullup/pulldown resistors simplify connection to diverse field devices; watchdog timer ensures fail-safe recovery from bus lockups. |
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 |
|---|---|---|---|
| MSP430F2122IRHBT | 4 KB flash, 512 B RAM, identical peripheral set and pinout - direct upgrade path for larger firmware or extended data logging. | Supports more complex sensor fusion algorithms and longer buffer histories without external memory. | Select when firmware size exceeds 2 KB or RAM requirements exceed 256 B; same PCB layout and power profile. |
| MSP430G2553IPW28 | 2 KB flash, 256 B RAM, but 28-pin TSSOP package and enhanced USCI (dual UART/I²C/SPI); lacks integrated comparator and has higher active current (270 µA). | Better suited for prototyping or cost-sensitive designs where QFN assembly is impractical and comparator functionality is not required. | Choose for breadboard-friendly development or legacy TSSOP-compatible boards; verify ADC reference stability and comparator absence in design. |
Compared with MSP430F2112IRHBT, the MSP430F2122IRHBT offers scalable memory while preserving identical low-power behavior and pin compatibility, whereas the MSP430G2553IPW28 trades analog integration and QFN footprint for prototyping flexibility and broader communication options - requiring layout and firmware adaptation.
Availability
MSP430F2112IRHBT is available at Aetrix Electronics and suitable for smart sensor nodes, battery management units, energy-harvesting transmitters, and industrial control interfaces requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MSP430F2112IRHBT 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 microcontrollers for industrial, automotive, and consumer applications.
The MSP430F21x2 product line was designed specifically for battery-operated measurement and sensing applications demanding nanowatt-level standby power, fast wake-up, and integrated analog signal conditioning - targeting portable medical devices, wireless sensor networks, and energy-efficient instrumentation.
FAQ
What is the maximum operating frequency of the MSP430F2112IRHBT?
The MSP430F2112IRHBT supports a maximum system clock (MCLK) of 16 MHz, achieved via its factory-calibrated digitally controlled oscillator (DCO). This frequency is stable to ±1% across temperature and voltage when using the internal calibration constants stored in information memory segment A - enabling high-speed computation while maintaining low-power efficiency in active mode.
Does the MSP430F2112IRHBT support hardware UART with automatic baudrate detection?
Yes, the MSP430F2112IRHBT's USCI_A0 module supports enhanced UART with LIN-compliant automatic baudrate detection. This feature allows the MSP430F2112IRHBT to synchronize to incoming serial frames without prior knowledge of the transmitter's baud rate - ideal for interoperability with variable-speed sensors or legacy industrial equipment.
How many analog input channels does the ADC10 module support on the MSP430F2112IRHBT?
The ADC10 module on the MSP430F2112IRHBT supports eight analog input channels (A0 through A7), mapped to P2.0, P2.1, P2.2, P2.3, P2.4, P3.0, P3.6, and P3.7. These channels can be scanned automatically in sequence using the autoscan mode, with conversion results transferred directly to memory via the Data Transfer Controller (DTC) - eliminating CPU overhead during acquisition.
What debug interface does the MSP430F2112IRHBT use, and how many pins are required?
The MSP430F2112IRHBT uses the Spy-Bi-Wire (SBW) debug interface, which requires only two pins: RST/NMI/SBWTDIO (Pin 5) and TEST/SBWTCK (Pin 29). This 2-wire interface provides full JTAG-equivalent functionality - including flash programming, breakpoint setting, and real-time register inspection - enabling compact debug headers and simplified PCB layout.
Is the MSP430F2112IRHBT pin-compatible with other members of the MSP430F21x2 family?
Yes, the MSP430F2112IRHBT is pin-compatible with the MSP430F2122IRHBT and MSP430F2132IRHBT in the same 32-pin QFN (RHB) package. All share identical pin functions, electrical characteristics, and peripheral mappings - allowing drop-in memory upgrades (e.g., from 2 KB to 4 KB flash) without PCB redesign or firmware changes beyond memory allocation.
MSP430F2112IRHBT 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:
- 2KB (2K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 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:
MSP430F2112IRHBT FAQ
1.How can I place an order for MSP430F2112IRHBT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2112IRHBT 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 MSP430F2112IRHBT reliable?
The price and inventory of MSP430F2112IRHBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2112IRHBT is usually 5 days.
3.What payment methods are accepted for MSP430F2112IRHBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2112IRHBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2112IRHBT?
MSP430F2112IRHBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2112IRHBT 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 MSP430F2112IRHBT?
For technical support, including MSP430F2112IRHBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2112IRHBT requirements.
6.How does Aetrix verify that MSP430F2112IRHBT is sourced from the original manufacturer or authorized distributors?
All MSP430F2112IRHBT 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 MSP430F2112IRHBT meets industry standards.
7.What is the process for return or replacement of MSP430F2112IRHBT?
All MSP430F2112IRHBT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2112IRHBT, 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 MSP430F2112IRHBT part is unused and in its original packaging.
Return procedure for MSP430F2112IRHBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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