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Texas Instruments MSP430F2131IDGV
- Part No.:
- MSP430F2131IDGV
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430F2131IDGV.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,978
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Product details
Overview
MSP430F2131IDGV from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 8 KB flash memory, 256 B RAM, integrated Comparator_A+, Timer_A3 with three capture/compare registers, and a digitally controlled oscillator (DCO) calibrated up to 16 MHz. It operates from 1.8 V to 3.6 V and delivers 250 µA active current at 1 MHz/2.2 V - optimized for battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430F2131IDGV datasheet, MSP430F2131IDGV pinout, MSP430F2131IDGV application, or MSP430F2131IDGV equivalent, key selection criteria include its 20-pin TVSOP (DGV) package, slope A/D conversion capability via comparator, sub-1-µs wake-up from standby mode, and JTAG/on-chip emulation support for low-overhead debugging in resource-constrained embedded designs.
Technical Context
The MSP430F2131IDGV implements a 16-bit CPU with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its basic clock module supports multiple sources: internal DCO (calibrated at 1/8/12/16 MHz), 32-kHz crystal (XIN/XOUT), high-frequency crystal (≤16 MHz), or external digital clock.
Power management includes six operating modes (AM, LPM0–LPM4), with LPM4 drawing only 0.1 µA (RAM retention). The on-chip Comparator_A+ enables analog signal comparison and slope-based A/D conversion without external ADC hardware, while Timer_A3 provides PWM, interval timing, and capture/compare functionality across 16-bit resolution.
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 | 8 KB + 256 B flash (main + info segments), 256 B RAM - supports in-system programming via JTAG or BSL UART |
| Supply Voltage | 1.8 V to 3.6 V - enables direct operation from single-cell Li-ion or two-cell alkaline batteries |
| Active Current | 250 µA at 1 MHz / 2.2 V - allows continuous sensing and processing in multi-year battery applications |
| Wake-up Time | <1 µs from standby mode - minimizes latency in event-driven sensor wake-up architectures |
| Operating Temperature | -40°C to +85°C - qualified for industrial and extended-temperature embedded deployments |
| Clock Sources | Internal DCO (4 factory-calibrated frequencies), 32-kHz crystal, HF crystal ≤16 MHz, or external digital clock |
Pinout & Package
Package: 20-pin Thin Shrink Small-Outline Package (TVSOP), suffix DGV, body size 4.4 mm × 6.5 mm, 0.65 mm pitch. Thermal pad not present - no exposed pad connection required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK | Timer_A clock input | Accepts external timing source for Timer_A; also functions as general I/O with interrupt capability |
| P1.1/TA0 | Timer_A capture/compare channel 0 | Supports CCI0A input (capture) or Out0 output (PWM/comparison); doubles as BSL transmit pin |
| P1.2/TA1 | Timer_A capture/compare channel 1 | Provides CCI1A input or Out1 output; configurable for PWM generation or event timing |
| P1.3/TA2 | Timer_A capture/compare channel 2 | Enables CCI2A input or Out2 output; used for multi-phase timing or dual-slope A/D control |
| P1.4/SMCLK/TCK | Sub-main clock output / JTAG test clock | Drives SMCLK to peripherals; serves as TCK during JTAG programming and debug sessions |
| P1.5/TA0/TMS | Timer_A channel 0 output / JTAG test mode select | Delivers TA0 compare output; acts as TMS for boundary-scan configuration and state control |
| P1.6/TA1/TDI/TCLK | Timer_A channel 1 output / JTAG test data input or clock | Provides TA1 output or accepts TDI/TCLK depending on JTAG instruction - shared function requires mode awareness |
| P1.7/TA2/TDO/TDI | Timer_A channel 2 output / JTAG test data output or input | Outputs TA2 result or exchanges test data (TDO/TDI) - pin behavior determined by active JTAG instruction |
| P2.0/ACLK/CA2 | ACLK output / comparator input CA2 | Routes ACLK to external circuitry or feeds analog signal to comparator stage CA2 |
| P2.1/INCLK/CA3 | Timer_A internal clock input / comparator input CA3 | Synchronizes Timer_A to internal clock source; also accepts analog input for comparator CA3 |
| P2.2/CAOUT/TA0/CA4 | Comparator output / Timer_A channel 0 input / comparator input CA4 | Delivers comparator decision logic (CAOUT), captures TA0 events, or routes analog signal to CA4 |
| P2.3/CA0/TA1 | Comparator input CA0 / Timer_A channel 1 input | Feeds analog reference or signal to comparator; also serves as CCI1B capture input for TA1 |
| P2.4/CA1/TA2 | Comparator input CA1 / Timer_A channel 2 input | Accepts second analog input for differential comparison; doubles as CCI2B capture input for TA2 |
| P2.5/CA5 | Comparator input CA5 | Dedicated analog input for fifth comparator channel - expands multi-threshold monitoring capability |
| XIN/P2.6/CA6 | Crytal oscillator input / comparator input CA6 | Connects to low-frequency crystal (32 kHz) or supplies analog signal to CA6 for threshold detection |
| XOUT/P2.7/CA7 | Crytal oscillator output / comparator input CA7 | Drives crystal load or provides analog input path to CA7 - requires P2SEL.7 cleared if used as input |
| RST/NMI | Reset / non-maskable interrupt | Hardware reset initiation or high-priority NMI event handling - critical for fault recovery |
| TEST | JTAG test mode enable | Activates JTAG interface when pulled high; connects to device protection fuse for security lockout |
| VCC | Supply voltage | Primary power rail for digital and analog domains - must be decoupled per TI layout guidelines |
| VSS | Ground reference | Common return path for all circuits - requires low-impedance connection to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA in LPM4 with RAM retention - extends battery life in always-on sensor endpoints |
| On-chip analog comparator | Eight-channel input mux (CA0–CA7) supporting slope A/D conversion - eliminates need for external ADC in simple thresholding applications |
| Integrated emulation module | On-chip JTAG interface with two breakpoints - enables real-time debugging without external emulator hardware |
| Factory-calibrated DCO | Four precision frequencies (1/8/12/16 MHz) stored in flash info segment A - ensures accurate timing without external crystal in cost-sensitive designs |
| Bootstrap loader (BSL) | UART-based flash programming via P1.1/P2.2 - allows field firmware updates without JTAG hardware |
| Programmable I/O with pullup/down | All 16 GPIO pins support individually configurable resistors and edge-selectable interrupts - simplifies button, switch, and sensor interface design |
Applications
| Smart Sensor Node | Battery-Powered Data Logger |
|---|---|
Use Scenario: Continuous environmental monitoring (temperature, humidity, light) with periodic wireless transmission. IC Role / Device Role / Timing Role: Primary controller executing sensor acquisition, digital filtering, and low-power radio coordination; uses DCO for system timing and comparator for analog threshold detection. Use Value: 250 µA active current and sub-1-µs wake-up enable multi-year operation on coin-cell batteries while maintaining responsive event detection. | Use Scenario: Standalone logging of voltage, current, or vibration data in remote equipment over weeks or months. IC Role / Device Role / Timing Role: Host MCU managing flash storage, real-time clock synchronization via ACLK, and low-duty-cycle sampling using Timer_A3 intervals. Use Value: 8 KB flash supports firmware + data buffer; LPM3 (0.7 µA) preserves RAM state between 10-second sampling intervals without external RTC. |
| Portable Medical Monitor | Industrial Control Interface |
Use Scenario: Wearable pulse oximeter or glucose meter requiring precise analog front-end control and minimal power draw. IC Role / Device Role / Timing Role: Analog signal conditioner and digital controller; Comparator_A+ performs slope A/D on photodiode outputs; Timer_A3 manages LED drive timing. Use Value: Integrated comparator eliminates discrete op-amp/ADC components; 1.8 V minimum supply allows direct use of single LiPo cell. | Use Scenario: Local HMI or status indicator in PLC subsystems, monitoring relay states, temperature thresholds, or fault signals. IC Role / Device Role / Timing Role: Dedicated peripheral manager interfacing with optocouplers, LEDs, and analog sensors; uses GPIO interrupts for fast response to external events. Use Value: 16 GPIO with programmable pullups simplify board-level interfacing; brownout detector ensures reliable reset during unstable supply conditions. |
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 |
|---|---|---|---|
| MSP430F2121IDGV | 4 KB flash, 256 B RAM, identical pinout and peripheral set | Lower program memory capacity limits complex firmware or large lookup tables | Select when application firmware fits within 4 KB and cost optimization is prioritized over future scalability |
| MSP430F2132IDGV | 8 KB flash, 256 B RAM, added 10-bit ADC with sample-and-hold | Includes dedicated SAR ADC - eliminates need for slope A/D workarounds in precision analog acquisition | Choose when higher-resolution analog measurements are required and additional ADC channels justify migration |
Compared with MSP430F2121IDGV, the MSP430F2131IDGV offers double flash capacity for feature-rich firmware; versus MSP430F2132IDGV, it trades integrated ADC resolution for lower power in pure comparator-based thresholding applications.
Availability
MSP430F2131IDGV is available at Aetrix Electronics and suitable for smart sensor nodes, battery-powered data loggers, and portable medical monitors requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for MSP430F2131IDGV 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 MSP430F2131IDGV belongs to the MSP430x21x1 ultra-low-power mixed-signal microcontroller family, designed specifically for battery-operated measurement and sensing applications where extended runtime, rapid wake-up, and integrated analog functionality are critical.
FAQ
What is the maximum operating frequency of the MSP430F2131IDGV?
The MSP430F2131IDGV supports a maximum MCLK frequency of 16 MHz when VCC ≥ 3.3 V, enabled by its factory-calibrated digitally controlled oscillator (DCO). At lower supply voltages (e.g., 2.2 V), the maximum guaranteed frequency is 6 MHz. This frequency governs CPU execution speed, Timer_A3 timing resolution, and peripheral clock rates - all directly tied to the DCO calibration values stored in flash information memory segment A.
Does the MSP430F2131IDGV include a built-in analog-to-digital converter (ADC)?
The MSP430F2131IDGV does not contain a dedicated successive-approximation (SAR) or sigma-delta ADC. Instead, it integrates the Comparator_A+ module with slope A/D conversion capability - using the internal timer and comparator to perform analog-to-digital conversion via charging/discharging a capacitor. This method achieves effective resolution dependent on timing accuracy and noise, and is documented in the MSP430x2xx Family User's Guide (SLAU144) as a low-power alternative to fixed-function ADCs.
What development tools are supported for programming the MSP430F2131IDGV?
The MSP430F2131IDGV supports programming via JTAG using tools such as the MSP-FET430UIF (USB interface) or MSP-FET430PIF (parallel port), as well as through its onboard bootstrap loader (BSL) using UART communication on P1.1 (TX) and P2.2 (RX). Target boards like the MSP-TS430PW28 are compatible, and production programming is supported by the MSP-GANG430 gang programmer - all confirmed in the SLAS439F datasheet section "Development Tool Support".
Is the MSP430F2131IDGV pin-compatible with other members of the MSP430F21x1 family?
Yes, the MSP430F2131IDGV shares identical pinout and electrical characteristics with other 20-pin TVSOP (DGV) variants in the MSP430F21x1 family - including MSP430F2101IDGV, MSP430F2111IDGV, and MSP430F2121IDGV. All use the same terminal numbering, I/O mapping, and peripheral signal assignments per Table 2 of SLAS439F, enabling hardware reuse across memory variants without PCB redesign.
What is the purpose of the TEST pin on the MSP430F2131IDGV?
The TEST pin on the MSP430F2131IDGV selects JTAG test mode when driven high and connects internally to the JTAG fuse-blow circuit. It enables boundary-scan testing, flash programming, and real-time debugging via standard JTAG interfaces. The device protection fuse is linked to this pin - blowing the fuse disables JTAG access permanently, enforcing intellectual property protection for deployed firmware in the MSP430F2131IDGV.
MSP430F2131IDGV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-TFSOP (0.173", 4.40mm Width)
- Series:
- MSP430F2xx
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- -
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 8KB (8K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- Slope A/D
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F2131IDGV FAQ
1.How can I place an order for MSP430F2131IDGV through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2131IDGV 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 MSP430F2131IDGV reliable?
The price and inventory of MSP430F2131IDGV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2131IDGV is usually 5 days.
3.What payment methods are accepted for MSP430F2131IDGV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2131IDGV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2131IDGV?
MSP430F2131IDGV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2131IDGV 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 MSP430F2131IDGV?
For technical support, including MSP430F2131IDGV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2131IDGV requirements.
6.How does Aetrix verify that MSP430F2131IDGV is sourced from the original manufacturer or authorized distributors?
All MSP430F2131IDGV 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 MSP430F2131IDGV meets industry standards.
7.What is the process for return or replacement of MSP430F2131IDGV?
All MSP430F2131IDGV units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2131IDGV, 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 MSP430F2131IDGV part is unused and in its original packaging.
Return procedure for MSP430F2131IDGV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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