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Texas Instruments MSP430FR4131IG56R
- Part No.:
- MSP430FR4131IG56R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430FR4131IG56R.pdf
- Description:
- IC MCU 16BIT 4.5KB FRAM 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,806
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Product details
Overview
MSP430FR4131IG56R from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller in 56-pin TSSOP package, featuring 4KB program FRAM + 512B information FRAM + 512B RAM, 10-bit ADC with 8 channels, and integrated LCD driver supporting up to 4×30 or 8×26 segments. It operates from 1.8 V to 3.6 V and targets battery-powered metering and portable health devices.
For engineers reviewing the MSP430FR4131IG56R datasheet, MSP430FR4131IG56R pinout, MSP430FR4131IG56R application, or MSP430FR4131IG56R equivalent, key selection criteria include FRAM endurance (1015 write cycles), LPM3.5 current (≤1.27 µA at 85°C), capacitive touch I/O support across all pins, and dual eUSCI modules for UART/I²C/SPI connectivity.
Technical Context
The MSP430FR4131IG56R implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO) achieving ±1% accuracy at room temperature. Its clock system integrates REFO (32 kHz), VLO (10 kHz), MODCLK, and external XT1 crystal support - enabling sub-10 µs wake-up from LPM3.5.
It features two Timer_A3 modules (each with three capture/compare registers), a dedicated RTC counter, CRC16 engine, and an on-chip charge pump for LCD operation in standby mode. All 52 GPIOs are capacitive touch-capable and support interrupt-driven wake-up from low-power modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and constant generators; enables high code efficiency for embedded firmware. |
| FRAM Memory | 4KB program + 512B info FRAM + 512B RAM; nonvolatile, radiation-resistant, 1015 write endurance. |
| ADC | 10-bit SAR ADC with 8 input channels, 200 ksps sample rate, internal 1.5-V reference, and sample-and-hold. |
| Low-Power Modes | LPM3.5 draws ≤1.27 µA at 85°C with RTC + LCD active; shutdown (LPM4.5) consumes 15 nA. |
| Communication | eUSCI_A0 supports UART/IrDA/SPI; eUSCI_B0 supports SPI/I²C; both enable flexible peripheral interfacing. |
| LCD Driver | Supports 4×30 or 8×26 segment configurations; on-chip charge pump maintains display in LPM3.5 without external components. |
| GPIO & Touch | 52 I/O pins, all configurable as capacitive touch inputs; 16 interrupt-capable pins (P1/P2) for wake-up from LPMs. |
Pinout & Package
Package: 56-pin TSSOP (DGG), body size 14 mm × 6.1 mm, lead pitch 0.5 mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC / DVSS | Power supply pair | Main digital/analog power domain; requires 4.7–10 µF bulk + 0.1 µF bypass capacitors. |
| RST/NMI/SBWTDIO | Reset & debug I/O | Active-low reset input, NMI source, and Spy-Bi-Wire data I/O for programming/debugging. |
| TEST/SBWTCK | Debug clock input | Enables Spy-Bi-Wire interface; must be pulled high during normal operation. |
| XIN / XOUT | XT1 crystal interface | Connects to external 32-kHz crystal for precise RTC timing and low-power clock source. |
| P1.x / P2.x | Interrupt-capable I/O | 16 pins support edge-triggered interrupts and wake-up from all LPMs including LPM3.5. |
| P4.4 / P4.3 | LCD charge pump ports | External 0.1-µF capacitor between LCDCAP1 and LCDCAP0 enables on-chip charge pump for LCD bias. |
| P5.3–P5.0 | I²C interface pins | UCB0SOMI/SDA, UCB0SIMO/SDA, UCB0CLK, UCB0STE - support standard/fast-mode I²C. |
| P1.0–P1.4 | UART interface pins | UCA0TXD/UCA0RXD/UCA0CLK/UCA0STE - enable hardware UART with flow control capability. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | Unified nonvolatile memory with 1015 write cycles, ECC protection, and configurable write lock for firmware/data integrity. |
| Ultra-Low-Power LCD Support | On-chip charge pump sustains LCD contrast (2.6–3.5 V in 0.06-V steps) during LPM3.5 - eliminates external boost IC. |
| Capacitive Touch I/O | All 52 GPIOs support capacitive sensing without external components; integrated CTS module reduces BOM and firmware overhead. |
| Fast Wake-Up Capability | DCO-based clock allows transition from LPM3.5 to active mode in <10 µs - critical for responsive sensor polling and event handling. |
| Integrated Analog Peripherals | 10-bit ADC with internal reference and sample-and-hold enables direct sensor signal digitization without external op-amps or references. |
Applications
| Remote Controls | Thermostats |
|---|---|
Use Scenario: IR-based consumer remote with button matrix, LED feedback, and battery life >2 years. IC Role / Device Role / Timing Role: Main controller executing IR modulation logic, capacitive touch decoding, and LCD segment driving. Use Value: Integrated IR modulation logic and 52 touch-capable I/Os eliminate external encoder and touch controller ICs. | Use Scenario: Wireless HVAC thermostat with ambient temperature/humidity sensing, local display, and BLE gateway interface. IC Role / Device Role / Timing Role: Sensor hub and UI controller managing ADC readings, LCD refresh, and real-time clock for scheduling. Use Value: LPM3.5 operation with RTC + LCD active enables multi-year coin-cell battery life while maintaining timekeeping and display visibility. |
| Water Meters | Blood Glucose Monitors |
Use Scenario: Ultrasonic or magnetic flow meter with pulse output, tamper detection, and LCD display for consumption readout. IC Role / Device Role / Timing Role: Data acquisition unit sampling flow pulses, calculating cumulative volume, and updating segmented LCD. Use Value: 8-channel ADC supports auxiliary sensors (temperature, battery voltage); FRAM ensures reliable logging of metering events without wear-out. | Use Scenario: Portable medical device measuring blood glucose via electrochemical test strip, with display, button interface, and data storage. IC Role / Device Role / Timing Role: Signal conditioning, ADC conversion, strip calibration, and secure result storage in protected FRAM. Use Value: Radiation-resistant FRAM prevents data corruption in clinical environments; built-in ECC guarantees integrity of stored calibration and measurement history. |
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 |
|---|---|---|---|
| MSP430FR4132IG56R | 8KB program FRAM + 1KB RAM; identical pinout, peripherals, and package. | Higher memory headroom for larger firmware or extended data logging. | Select when firmware size exceeds 4KB or SRAM usage exceeds 512B - no PCB change required. |
| MSP430FR2355TRHBR | 32-pin VQFN; 16KB FRAM + 2KB RAM; no integrated LCD driver; different eUSCI configuration. | Compact footprint for space-constrained designs lacking LCD requirements. | Choose for non-LCD applications where board area is critical and higher memory is needed - requires layout revision. |
Compared with MSP430FR4132IG56R, the MSP430FR4131IG56R trades memory capacity for cost and power optimization in simpler metering/UI applications; versus MSP430FR2355TRHBR, it provides full LCD integration and larger I/O count at the expense of package size and pin compatibility.
Availability
MSP430FR4131IG56R is available at Aetrix Electronics and suitable for remote controls, thermostats, and water meters requiring stable component supply, long-term lifecycle assurance, and consistent FRAM reliability across production batches.
Supply support for MSP430FR4131IG56R 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 company headquartered in Dallas, Texas, delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The MSP430FR41xx product line was designed specifically for ultra-low-power LCD-enabled metering and portable health applications - combining FRAM persistence, capacitive touch, and integrated analog front-ends to minimize external components.
FAQ
What is the maximum operating frequency of the MSP430FR4131IG56R?
The MSP430FR4131IG56R features a digitally controlled oscillator (DCO) with frequency-locked loop (FLL) that supports up to 16 MHz operation. This maximum frequency is achievable across the full recommended supply range (1.8 V to 3.6 V) and enables high-speed signal processing while maintaining ultra-low-power efficiency in active mode.
Does the MSP430FR4131IG56R support external crystal oscillators?
Yes, the MSP430FR4131IG56R supports an external 32-kHz crystal oscillator via the XIN/XOUT pins (pins 13 and 12 in TSSOP-56). This XT1 oscillator provides precise timing for the real-time clock (RTC) and can serve as a low-power clock source during LPM3 and LPM3.5 modes - critical for timekeeping in battery-operated devices.
How many I/O pins does the MSP430FR4131IG56R have, and what are their capabilities?
The MSP430FR4131IG56R provides 52 general-purpose I/O pins in its 56-pin TSSOP package. All 52 pins support capacitive touch sensing, and 16 of them (on ports P1 and P2) are interrupt-capable - enabling wake-up from any low-power mode including LPM3.5. Each pin is software-configurable for multiple functions including LCD segment/com drive, timer capture/compare, UART/I²C/SPI, and analog inputs.
What LCD configurations does the MSP430FR4131IG56R support?
The MSP430FR4131IG56R supports up to 4×30 or 8×26 segment LCD configurations - fewer than the 64-pin variants due to reduced pin count. Its integrated LCD driver includes an on-chip charge pump, allowing contrast control from 2.6 V to 3.5 V in 0.06-V steps and enabling full display functionality even in LPM3.5 standby mode without external voltage boost circuitry.
Is the MSP430FR4131IG56R pin-compatible with other members of the MSP430FR413x family?
Yes, the MSP430FR4131IG56R is pin-compatible with the MSP430FR4132IG56R and MSP430FR4133IG56R within the same 56-pin TSSOP (DGG) package. All three share identical pinouts, peripheral mappings, and electrical characteristics - differing only in FRAM/RAM memory sizes. This allows seamless firmware and layout reuse across variants during design scaling or cost optimization.
MSP430FR4131IG56R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Series:
- MSP430™ FRAM
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, LCD, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 4.5KB (4.5K x 8)
- Program Memory Type:
- FRAM
- 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:
MSP430FR4131IG56R FAQ
1.How can I place an order for MSP430FR4131IG56R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR4131IG56R 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 MSP430FR4131IG56R reliable?
The price and inventory of MSP430FR4131IG56R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR4131IG56R is usually 5 days.
3.What payment methods are accepted for MSP430FR4131IG56R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR4131IG56R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR4131IG56R?
MSP430FR4131IG56R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR4131IG56R 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 MSP430FR4131IG56R?
For technical support, including MSP430FR4131IG56R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR4131IG56R requirements.
6.How does Aetrix verify that MSP430FR4131IG56R is sourced from the original manufacturer or authorized distributors?
All MSP430FR4131IG56R 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 MSP430FR4131IG56R meets industry standards.
7.What is the process for return or replacement of MSP430FR4131IG56R?
All MSP430FR4131IG56R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR4131IG56R, 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 MSP430FR4131IG56R part is unused and in its original packaging.
Return procedure for MSP430FR4131IG56R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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