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Texas Instruments MSP430F2274IDAR
- Part No.:
- MSP430F2274IDAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430F2274IDAR.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:29,086
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Product details
Overview
MSP430F2274IDAR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 32KB+256B flash, 1KB RAM, dual operational amplifiers, 10-bit 200-ksps ADC with integrated 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 sensor systems, RF front ends, and portable measurement devices.
For engineers reviewing the MSP430F2274IDAR datasheet, MSP430F2274IDAR pinout, MSP430F2274IDAR application, or MSP430F2274IDAR equivalent, key selection criteria include ultra-low active/standby current (270 µA @ 1 MHz / 0.7 µA standby), 38-pin TSSOP package compatibility, dual-op-amp analog signal conditioning capability, and Spy-Bi-Wire debug support for embedded firmware development.
Technical Context
The MSP430F2274IDAR implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations. Its basic clock system includes DCO (calibrated to ±1% at 1–16 MHz), ACLK (LF crystal or internal VLO), SMCLK, and MCLK - all software-selectable across six low-power modes including LPM4 (0.1 µA RAM retention).
It integrates two independent rail-to-rail operational amplifiers (OA0 and OA1) with configurable inputs/outputs on P2.x, P3.x, and P4.x pins, supporting programmable gain and sensor front-end signal conditioning. The ADC10 features 12-channel autoscan, internal 1.5V/2.5V references, and direct memory transfer via DTC - eliminating CPU intervention during conversion sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and 62.5-ns instruction cycle - enables deterministic real-time control and high code efficiency in battery-constrained firmware. |
| Flash / RAM | 32KB + 256B flash memory and 1KB RAM - supports complex sensor fusion algorithms and bootloader + application partitioning. |
| Power Consumption | 270 µA active @ 1 MHz / 2.2 V; 0.7 µA standby; 0.1 µA off-mode with RAM retention - extends coin-cell battery life to multi-year operation. |
| ADC Performance | 10-bit, 200-ksps SAR ADC with 12 input channels, internal reference, sample-and-hold, autoscan, and DTC - enables continuous sensor data acquisition without CPU polling. |
| Timers | Timer_A3 (3 capture/compare registers) and Timer_B3 (3 capture/compare + shadow registers) - supports PWM generation, input capture, and precise timing for motor control or pulse measurement. |
| Communication | USCI_A0 (UART/LIN auto-baud, IrDA, SPI) and USCI_B0 (SPI/I²C) - provides dual-protocol serial connectivity for host interfaces and peripheral expansion. |
| Analog Peripherals | Two rail-to-rail op amps (OA0/OA1) with programmable input/output routing - allows on-chip signal amplification, filtering, and sensor biasing without external components. |
Pinout & Package
Package: 38-pin Thin Shrink Small-Outline Package (TSSOP), RoHS-compliant, body size 9.7 × 4.4 mm, 0.65 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK/ADC10CLK | Timer_A clock input / ADC conversion clock | Enables synchronous timer triggering and precise ADC sampling timing control. |
| P2.0/ACLK/A0/OA0I0 | ACLK output / ADC channel A0 / OA0 non-inverting input | Supports low-frequency timing source sharing, analog sensing, and op-amp signal injection in one pin. |
| P2.3/TA1/A3/VREF−/VeREF−/OA1I1/OA1O | ADC channel A3 / negative reference / OA1 input or output | Configurable as op-amp output or reference sink - enables rail-to-rail output buffering or precision reference decoupling. |
| P3.6/A6/OA0I2 | ADC channel A6 / OA0 inverting input | Allows differential input configuration with P2.0 or P2.2 for noise-rejecting sensor measurements. |
| P4.4/TB1/A13/OA1O | Timer_B channel 1 / ADC channel A13 / OA1 output | Combines timing, analog input, and op-amp output - supports synchronized analog signal generation and monitoring. |
| RST/NMI/SBWTDIO | Reset / NMI input / Spy-Bi-Wire data I/O | Single-pin debug interface enables in-system programming and real-time debugging with minimal PCB footprint. |
| TEST/SBWTCK | Spy-Bi-Wire test clock input | Required for JTAG/SBW programming - must be driven externally during firmware load or debug session. |
Key Features
| Feature | Design Value |
|---|---|
| Dual rail-to-rail op amps | Integrated OA0 and OA1 support programmable gain, filtering, and sensor signal conditioning - reduces BOM count and board area in analog front ends. |
| 10-bit ADC with DTC | Direct memory transfer controller automates ADC result storage to RAM without CPU wake-up - preserves ultra-low power in periodic sensing applications. |
| Ultra-low-power operation | Sub-1 µs wake-up from LPM3/LPM4 and 0.1 µA off-mode enable rapid response and multi-year battery life in intermittent-sampling systems. |
| USCI dual-serial modules | Independent USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C) allow concurrent communication with host MCU and local sensors/peripherals. |
| On-chip emulation module | Embedded Emulation Module (EEM) with 2 breakpoint units enables full-speed debugging and flash programming via Spy-Bi-Wire - no external emulator required. |
Applications
| Wireless Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and ambient light at 10-second intervals, transmitting data via UART to BLE module. IC Role / Device Role / Timing Role: Central MCU managing ADC sampling, op-amp signal conditioning for thermistor bridge, LIN-compatible UART framing, and LPM3-based sleep/wake scheduling. Use Value: 0.7 µA standby current and sub-1 µs wake-up minimize energy per measurement cycle, extending CR2032 battery life beyond 3 years. |
Use Scenario: Handheld pulse oximeter acquiring analog photodiode signals, performing real-time SpO₂ calculation, and displaying results on segmented LCD. IC Role / Device Role / Timing Role: Signal-processing MCU using dual op amps for transimpedance amplification and ADC10 for synchronized red/IR sampling with DTC-driven buffer management. Use Value: Integrated op amps eliminate external gain stages; 10-bit ADC with internal reference ensures stable SpO₂ accuracy across voltage and temperature drift. |
| Industrial Data Logger | Smart Meter Sensor Interface |
|
Use Scenario: DIN-rail mounted logger capturing 4–20 mA loop signals, thermocouple voltages, and digital status inputs over 24-hour cycles. IC Role / Device Role / Timing Role: Analog acquisition hub using ADC10 autoscan across 12 channels, Timer_B for precise timestamping, and USCI_B0 for isolated RS-485 communication. Use Value: 12-channel autoscan and DTC reduce firmware overhead; dual op amps condition low-level thermocouple signals with cold-junction compensation. |
Use Scenario: Electricity meter auxiliary board measuring neutral current, tamper detection signals, and RTC backup voltage with high reliability. IC Role / Device Role / Timing Role: Safety-critical monitor MCU executing brownout detection, secure boot, and watchdog supervision while interfacing with metrology IC via SPI. Use Value: Brownout detector with hysteresis prevents erratic behavior during grid sags; security fuse and BSL protect firmware integrity in field-deployed meters. |
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 |
|---|---|---|---|
| MSP430F2272IDAR | 16KB+256B flash, 512B RAM, no operational amplifiers | Lacks dual op amps; suitable for digital-only sensing or simpler analog front ends requiring external amplification | Select when cost sensitivity outweighs need for integrated analog signal conditioning and memory headroom is sufficient. |
| MSP430F2254IDAR | 16KB+256B flash, 512B RAM, dual op amps, but no USCI_A0 LIN support | Missing LIN auto-baud detection and IrDA encoder/decoder - limits automotive diagnostic or IR remote use cases | Prefer when dual op amps are required but LIN/IrDA functionality is unnecessary and flash/RAM requirements are moderate. |
Compared with MSP430F2272IDAR and MSP430F2254IDAR, the MSP430F2274IDAR uniquely combines maximum flash (32KB), full analog integration (dual op amps), and complete USCI feature set - making it optimal for feature-rich, long-life embedded systems where firmware complexity and analog signal chain integration are critical.
Availability
MSP430F2274IDAR 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, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MSP430F2274IDAR 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 for industrial, automotive, and consumer markets.
The MSP430F2274IDAR belongs to the MSP430F2xx ultra-low-power microcontroller family, designed specifically for battery-operated measurement and sensing applications demanding extended runtime, integrated analog peripherals, and robust debug capability.
FAQ
What is the operating voltage range of the MSP430F2274IDAR?
The MSP430F2274IDAR operates from 1.8 V to 3.6 V, enabling direct compatibility with common lithium coin cells (e.g., CR2032), single-cell Li-ion batteries, and regulated 3.3 V supplies. This wide range supports flexible power architecture design while maintaining full functionality across the entire voltage window - including ADC reference stability and op-amp rail-to-rail performance.
Does the MSP430F2274IDAR include hardware debug support?
Yes, the MSP430F2274IDAR integrates an Embedded Emulation Module (EEM) with two hardware breakpoints and supports Spy-Bi-Wire (SBW) interface via RST/NMI/SBWTDIO and TEST/SBWTCK pins. This enables full-speed debugging, flash programming, and real-time trace without requiring a dedicated JTAG header - reducing PCB space and BOM cost in compact designs.
How many analog input channels does the ADC10 in the MSP430F2274IDAR support?
The ADC10 in the MSP430F2274IDAR supports 12 analog input channels (A0–A7, A12–A15), with flexible routing through P2.x, P3.x, and P4.x pins. It includes internal 1.5 V and 2.5 V references, sample-and-hold, autoscan mode, and direct transfer controller (DTC) - allowing fully autonomous multi-channel acquisition sequences without CPU intervention.
Can the MSP430F2274IDAR generate LIN-compliant frames?
Yes, the MSP430F2274IDAR's USCI_A0 module supports LIN 2.0/2.1 protocol via hardware-assisted auto-baudrate detection and break-field generation. When configured in UART mode with LIN-specific timing registers, it meets ISO 17987 electrical and protocol requirements - enabling direct connection to automotive body control modules without external transceivers.
What low-power modes are available on the MSP430F2274IDAR?
The MSP430F2274IDAR offers six software-selectable operating modes: Active Mode (AM), Low-Power Mode 0–3 (LPM0–LPM3), and LPM4. LPM4 draws only 0.1 µA with RAM retention and stops all clocks including the crystal oscillator - ideal for infrequent wake-up events. Wake-up from any LPM to AM occurs in under 1 µs via interrupt or reset.
MSP430F2274IDAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 38-TSSOP (0.240", 6.10mm Width)
- 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:
- 32KB (32K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K 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:
MSP430F2274IDAR FAQ
1.How can I place an order for MSP430F2274IDAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2274IDAR 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 MSP430F2274IDAR reliable?
The price and inventory of MSP430F2274IDAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2274IDAR is usually 5 days.
3.What payment methods are accepted for MSP430F2274IDAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2274IDAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2274IDAR?
MSP430F2274IDAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2274IDAR 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 MSP430F2274IDAR?
For technical support, including MSP430F2274IDAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2274IDAR requirements.
6.How does Aetrix verify that MSP430F2274IDAR is sourced from the original manufacturer or authorized distributors?
All MSP430F2274IDAR 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 MSP430F2274IDAR meets industry standards.
7.What is the process for return or replacement of MSP430F2274IDAR?
All MSP430F2274IDAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2274IDAR, 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 MSP430F2274IDAR part is unused and in its original packaging.
Return procedure for MSP430F2274IDAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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