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Texas Instruments MSP430F2234IRHAR
- Part No.:
- MSP430F2234IRHAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430F2234IRHAR.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,836
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Product details
Overview
MSP430F2234IRHAR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 8KB+256B flash, 512B RAM, dual operational amplifiers, 10-bit 200-ksps ADC with internal reference and DTC, two 16-bit timers (Timer_A3 and Timer_B3), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and 32 I/O pins - deployed in battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430F2234IRHAR datasheet, MSP430F2234IRHAR pinout, MSP430F2234IRHAR application, or MSP430F2234IRHAR equivalent, this page delivers verified functional architecture, RHA-package terminal mapping, low-power mode timing, op-amp integration details, and direct alternative part comparisons for embedded firmware and analog-peripheral co-design.
Technical Context
The MSP430F2234IRHAR implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations. Its clock system includes digitally controlled oscillator (DCO) with four factory-calibrated frequencies (±1%), ACLK from 32-kHz crystal or VLO, SMCLK up to 16 MHz, and MCLK derived from either source.
It integrates two independent rail-to-rail operational amplifiers (OA0 and OA1) with configurable inputs/outputs across P2.x, P3.x, and P4.x pins, supporting programmable gain and signal conditioning prior to ADC sampling. The 10-bit ADC supports autoscan across 12 channels (A0–A7, A12–A15), internal reference (1.5V/2.5V), and data transfer controller (DTC) for zero-CPU-overhead conversions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and 62.5-ns instruction cycle at 16 MHz |
| Flash / RAM | 8KB + 256B flash memory with security fuse; 512B SRAM with retention in LPM3/LPM4 |
| ADC | 10-bit, 200-ksps SAR ADC with internal reference, sample-and-hold, autoscan, and DTC |
| Op Amps | Two independent rail-to-rail op amps (OA0, OA1) with configurable I/O on 12 pins |
| Timers | Timer_A3 (3 capture/compare registers) and Timer_B3 (3 capture/compare + shadow registers) |
| USCI Peripherals | USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C) with independent clock domains |
| Low-Power Modes | Active mode (270 µA @ 1 MHz, 2.2 V); LPM4 (0.1 µA RAM retention); wake-up < 1 µs from standby |
Pinout & Package
40-pin QFN package (RHA), 6 mm × 6 mm, 0.5-mm pitch, exposed thermal pad (connected to DVSS). Pin 1 marked by dot; pin numbering follows standard QFN convention (top-left corner = Pin 1, counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK/ADC10CLK | Timer_A clock input / ADC conversion clock | Configurable as external TACLK source or internal ADC10CLK; enables synchronous sampling control |
| P2.0/ACLK/A0/OA0I0 | ACLK output / ADC channel A0 / OA0 non-inverting input | Shared function allows direct sensor buffering into OA0 before digitization via A0 |
| P2.1/TAINCLK/SMCLK/A1/OA0O | Timer_A INCLK / SMCLK output / ADC A1 / OA0 output | OA0 output routed to P2.1 enables feedback loop implementation or driving external circuitry |
| P2.3/TA1/A3/VREF−/VeREF−/OA1I1/OA1O | ADC A3 / negative reference / OA1 in/out | Supports dual-role: OA1 output or differential reference input; critical for ratiometric sensor interfaces |
| P4.3/TB0/A12/OA0O | Timer_B CCI0B / ADC A12 / OA0 output | Enables OA0 output multiplexing to timer capture or ADC channel - useful for windowed comparator emulation |
| RST/NMI/SBWTDIO | Reset / NMI input / Spy-Bi-Wire data I/O | Single-pin debug interface reduces PCB footprint; supports programming and real-time emulation without JTAG header |
Key Features
| Feature | Design Value |
|---|---|
| Dual rail-to-rail op amps | OA0 and OA1 support programmable gain, filtering, and sensor signal conditioning without external components |
| Integrated DTC for ADC | Automatically transfers conversion results to RAM without CPU intervention - essential for low-duty-cycle sensing |
| Four calibrated DCO frequencies | Factory-trimmed 1/4/8/12 MHz DCO settings ±1% enable precise timing without external crystal in cost-sensitive designs |
| Spy-Bi-Wire debug interface | 2-wire (SBWTCK/SBWDIO) programming and real-time debugging using only two pins - saves board space vs. full JTAG |
| Brownout detector with reset | Monitors DVCC and asserts RST below threshold - prevents erratic operation during battery voltage sag |
Applications
| Wireless Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity node transmitting data via UART-to-LoRa module. IC Role / Device Role / Timing Role: MSP430F2234IRHAR acquires analog sensor outputs via ADC with DTC, processes data, and drives UART at 9600 baud using USCI_A0 with auto-baud detection. Use Value: Ultra-low active and standby current (270 µA / 0.7 µA) extends coin-cell life to >5 years in 1-min wake-up intervals. |
Use Scenario: Wearable pulse oximeter with photodiode front-end and LED driver control. IC Role / Device Role / Timing Role: Dual op amps condition photodiode current; ADC samples synchronized to LED pulses; Timer_B triggers LED on/off timing. Use Value: Integrated OA0/OA1 eliminate discrete op amp stages, reducing BOM count and layout area while maintaining SNR >70 dB. |
| Industrial Data Logger | Smart Meter Sensor Interface |
|
Use Scenario: DIN-rail mounted logger capturing thermocouple and RTD signals across 8 channels. IC Role / Device Role / Timing Role: MSP430F2234IRHAR uses ADC autoscan across A0–A7 and A12–A15; OA0 buffers high-impedance thermocouple outputs. Use Value: Internal 1.5V/2.5V reference eliminates need for external precision voltage reference ICs. |
Use Scenario: Electricity meter auxiliary sensor board measuring neutral current and temperature. IC Role / Device Role / Timing Role: MSP430F2234IRHAR conditions shunt amplifier output via OA1, digitizes with 10-bit ADC, and communicates via I²C to main MCU. Use Value: LPM4 current of 0.1 µA enables always-on monitoring without draining backup supercapacitor. |
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 |
|---|---|---|---|
| MSP430F2254IRHAR | 16KB+256B flash, same peripherals and pinout; no functional difference except memory size | Required when firmware exceeds 8KB or future-proofing for feature expansion is needed | Select if code growth headroom or bootloader partitioning is required; identical migration path |
| MSP430F2274IRHAR | 32KB+256B flash, 1KB RAM; otherwise identical peripheral set and RHA pin compatibility | Suitable for complex sensor fusion algorithms or integrated protocol stacks (e.g., Modbus over UART) | Choose when >16KB flash is needed; maintains same PCB layout and firmware porting effort |
Compared with MSP430F2254IRHAR and MSP430F2274IRHAR, the MSP430F2234IRHAR provides optimal cost/performance balance for fixed-function sensor nodes where 8KB flash suffices - avoiding over-provisioned memory while retaining full analog integration and low-power capability.
Availability
MSP430F2234IRHAR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, industrial data loggers, and smart meter sensor interfaces requiring stable component supply across extended production lifecycles.
Supply support for MSP430F2234IRHAR 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 energy efficiency and system integration.
The MSP430F2234IRHAR belongs to the MSP430F22x4 family - designed specifically for ultra-low-power portable measurement and sensor signal acquisition applications demanding integrated analog front-ends and sub-µA standby operation.
FAQ
What is the maximum operating frequency of the MSP430F2234IRHAR?
The MSP430F2234IRHAR supports a maximum MCLK frequency of 16 MHz, achievable using the internal DCO (calibrated to ±1% at 1/4/8/12 MHz) or external HF crystal/resonator up to 16 MHz. At 16 MHz, instruction cycle time is 62.5 ns, and active-mode current is 270 µA at 2.2 V - confirmed in SLAS504G Section 5.1.
Does the MSP430F2234IRHAR include hardware debug capability?
Yes, the MSP430F2234IRHAR integrates an Embedded Emulation Module (EEM) and supports Spy-Bi-Wire (2-wire) debugging via RST/NMI/SBWTDIO and TEST/SBWTCK pins. This enables full-speed emulation, breakpoint setting, and flash programming without requiring a 4-pin JTAG header - validated in SLAS504G Section 2.4 and Table 4.
How many analog input channels does the MSP430F2234IRHAR ADC support?
The MSP430F2234IRHAR ADC10 supports 12 analog input channels: A0–A7 (P2.0–P2.4, P3.6–P3.7) and A12–A15 (P4.3–P4.6). All channels are accessible in autoscan mode with DTC-assisted data transfer - detailed in SLAS504G Sections 10.2.1 and Table 4 terminal functions.
Is the MSP430F2234IRHAR pin-compatible with other RHA-packaged MSP430F22x4 devices?
Yes, the MSP430F2234IRHAR shares identical 40-pin QFN (RHA) pinout and electrical characteristics with MSP430F2254IRHAR and MSP430F2274IRHAR - including identical terminal functions, power pin locations (DVCC/DVSS/AVCC/AVSS), and peripheral mappings. This enables drop-in replacement within the same package variant per SLAS504G Table 1 and pinout diagrams.
What op-amp configurations are supported by the MSP430F2234IRHAR?
The MSP430F2234IRHAR includes two independent rail-to-rail op amps (OA0 and OA1) with configurable inputs and outputs across 12 pins (e.g., OA0I0 on P2.0, OA0O on P2.1/P4.3, OA1I1/OA1O on P2.3). Each supports non-inverting, inverting, and differential configurations - confirmed in SLAS504G Features list and Table 4 terminal descriptions.
MSP430F2234IRHAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 40-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:
- 32
- Program Memory Size:
- 8KB (8K 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 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F2234IRHAR FAQ
1.How can I place an order for MSP430F2234IRHAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2234IRHAR 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 MSP430F2234IRHAR reliable?
The price and inventory of MSP430F2234IRHAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2234IRHAR is usually 5 days.
3.What payment methods are accepted for MSP430F2234IRHAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2234IRHAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2234IRHAR?
MSP430F2234IRHAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2234IRHAR 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 MSP430F2234IRHAR?
For technical support, including MSP430F2234IRHAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2234IRHAR requirements.
6.How does Aetrix verify that MSP430F2234IRHAR is sourced from the original manufacturer or authorized distributors?
All MSP430F2234IRHAR 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 MSP430F2234IRHAR meets industry standards.
7.What is the process for return or replacement of MSP430F2234IRHAR?
All MSP430F2234IRHAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2234IRHAR, 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 MSP430F2234IRHAR part is unused and in its original packaging.
Return procedure for MSP430F2234IRHAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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