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Texas Instruments MSP430FR59941IPNR
- Part No.:
- MSP430FR59941IPNR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MSP430FR59941IPNR.pdf
- Description:
- IC MCU 16BIT 256KB FRAM 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,613
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Product details
Overview
MSP430FR59941IPNR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller featuring 256 KB FRAM, 8 KB RAM, integrated Low-Energy Accelerator (LEA), 12-bit ADC with 20 external channels, and dual eUSCI_A/eUSCI_B modules supporting UART and I²C. It operates from 1.8 V to 3.6 V and targets battery-powered sensing and control systems requiring deterministic signal processing.
For engineers reviewing the MSP430FR59941IPNR datasheet, MSP430FR59941IPNR pinout, MSP430FR59941IPNR application, or MSP430FR59941IPNR equivalent, key selection criteria include LEA-enabled FFT acceleration, I²C-based bootloader (BSL), 68 GPIOs in LQFP-80 package, and sub-μA LPM3.5 current with RTC.
Technical Context
The MSP430FR59941IPNR implements the CPUXV2 core with 16 registers and integrates a dedicated Low-Energy Accelerator (LEA) subsystem sharing 4 KB RAM with the CPU. LEA executes complex DSP operations-including 256-point complex FFT-without CPU intervention, delivering up to 40× speedup over Cortex-M0+ cores.
Its clock system includes factory-trimmed DCO (1–16 MHz), LFXT (32 kHz crystal), HFXT (4–24 MHz crystal), and VLO. Power management supports seven low-power modes, including LPM3.5 (350 nA with RTC) and LPM4.5 (45 nA shutdown), enabled by SVS and brownout detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | CPUXV2 16-bit RISC, up to 16 MHz - enables deterministic real-time execution with minimal code footprint |
| Nonvolatile Memory | 256 KB FRAM + 0.5 KB information memory - supports fast (<4 ms for 64 KB), ultra-low-energy writes and OTA firmware updates |
| RAM | 8 KB total, including 4 KB shared with LEA - allows concurrent CPU/accelerator data handling without bus contention |
| ADC | 12-bit SAR ADC with 20 external inputs, window comparator, internal reference - suitable for multi-sensor analog acquisition with hardware-triggered sequencing |
| Low-Power Modes | LPM3.5: 350 nA (RTC active); LPM4.5: 45 nA (full shutdown) - extends coin-cell battery life to >10 years in periodic wake-up applications |
| Serial Interfaces | 4 × eUSCI_A (UART/IrDA/SPI); 4 × eUSCI_B (I²C/SPI); I²C BSL on P1.6/P1.7 - enables sensor hub communication and field-upgradable firmware via two-wire interface |
| Security | 128/256-bit AES coprocessor + IP encapsulation - protects firmware integrity and prevents unauthorized memory access during debug or runtime |
Pinout & Package
LQFP-80 (PN) package, 12 mm × 12 mm body, thermally enhanced with exposed pad (TI recommends connecting thermal pad to DVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO | Reset / Non-maskable interrupt / JTAG debug I/O | Single-pin multifunction reset and debug interface; requires 10-nF pulldown if unused |
| P1.6 / BSLSDA | I²C BSL data line | Enables factory or field firmware loading via I²C without UART hardware; shares pin with UCB0SIMO/TA0.0 |
| P1.7 / BSLSCL | I²C BSL clock line | Paired with P1.6 for 2-wire bootloader operation; supports standard-mode (100 kHz) and fast-mode (400 kHz) I²C |
| P2.0 / TB0.6 / UCA0TXD | Timer_B0 output / UART0 TX | Configurable as PWM output or UART transmit; default UART function used in primary serial debug path |
| P2.1 / TB0.0 / UCA0RXD | Timer_B0 input / UART0 RX | Complements P2.0 for full-duplex UART; supports automatic baud-rate detection for robust host communication |
| PJ.4 / LFXIN | Low-frequency crystal input | Accepts 32.768 kHz tuning-fork crystal for RTC operation; requires external load capacitors per layout guidelines |
| PJ.5 / LFXOUT | Low-frequency crystal output | Drives crystal oscillator circuit; must be routed with matched length and minimal stubs for stable 32-kHz timing |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 256 KB unified memory with 10¹⁵ write endurance and 125 ns word write time - eliminates flash wear-out concerns and enables logging at sensor sampling rates |
| Low-Energy Accelerator (LEA) | Dedicated DSP engine executing FFT/FIR/matrix ops independently of CPU - reduces active-mode energy per computation by >90% vs software-only implementation |
| Capacitive Touch I/O | All GPIOs support CTSIO with no external components - enables direct integration of touch buttons/sliders without RC networks or dedicated ICs |
| Hardware CRC Engine | 32-bit and 16-bit CRC calculation in single-cycle - accelerates firmware validation, packet integrity checks, and secure boot verification |
| Real-Time Clock (RTC) | Calendar mode with alarm, driven by 3.7-pF 32-kHz crystal - provides accurate timekeeping in LPM3.5 at 350 nA, enabling precise wake-up scheduling |
Applications
| Smart Utility Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-powered electricity/water/gas meter collecting pulse counts, temperature, and pressure at 15-minute intervals. IC Role / Device Role / Timing Role: Main controller managing metrology peripherals, RTC-driven wake-up, FRAM-based data logging, and I²C-connected sensors. Use Value: 350 nA LPM3.5 current with RTC enables >15-year battery life; FRAM withstands 10+ years of daily logging without degradation. |
Use Scenario: Wireless vibration/temperature node on rotating machinery, performing FFT-based spectral analysis before transmission. IC Role / Device Role / Timing Role: Signal processor executing 256-point FFT via LEA, then transmitting results via UART to gateway. Use Value: LEA completes FFT in <1.5 ms at 16 MHz - 40× faster than CPU-only, reducing active time and extending battery life per measurement cycle. |
| Wearable Fitness Tracker | Building Automation Controller |
Use Scenario: Wrist-worn device monitoring heart rate, motion, and ambient light with continuous capacitive touch UI. IC Role / Device Role / Timing Role: System-on-chip handling optical sensor interface, accelerometer SPI, touch I/O, and BLE co-processor UART. Use Value: All 68 GPIOs support capacitive touch - eliminates external touch controller; FRAM enables instant firmware update rollback on failure. |
Use Scenario: HVAC zone controller reading temperature/humidity sensors, driving relays, and communicating via I²C to central panel. IC Role / Device Role / Timing Role: Real-time controller executing PID loops, managing 4× eUSCI_B buses for multi-sensor I²C daisy chains. Use Value: I²C BSL on P1.6/P1.7 allows remote firmware updates over existing building wiring - no physical access or programming header required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power FRAM MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR5994IPNR | Same FRAM/RAM/LEA specs but UART BSL (P2.0/P2.1); identical LQFP-80 pinout | Requires UART interface for firmware updates instead of I²C; no change to sensor/peripheral routing | Select when legacy UART toolchains or host-side UART infrastructure already exist |
| MSP430FR5964IPNR | No LEA; same 256 KB FRAM, 8 KB RAM, and peripheral set except LEA/4KB shared RAM | Cannot accelerate FFT/FIR in hardware - limits real-time signal processing capability in resource-constrained nodes | Select when DSP offload is unnecessary and cost reduction is prioritized over computational throughput |
Compared with MSP430FR5994IPNR, the MSP430FR59941IPNR trades UART BSL for I²C BSL-enabling simpler 2-wire field updates-while retaining identical LEA performance and power profile. Against MSP430FR5964IPNR, it adds deterministic DSP acceleration at no penalty to memory or I/O resources.
Availability
MSP430FR59941IPNR is available at Aetrix Electronics and suitable for smart utility metering, industrial sensor nodes, wearable fitness trackers, and building automation controllers requiring stable component supply, long-term lifecycle assurance, and TI-qualified FRAM reliability.
Supply support for MSP430FR59941IPNR 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 design and industrial-grade reliability.
The MSP430FR599x product line was engineered specifically for energy-constrained sensing and control applications demanding nonvolatile memory endurance, deterministic real-time response, and hardware-accelerated signal processing-without compromising on power efficiency.
FAQ
What distinguishes MSP430FR59941IPNR from MSP430FR5994IPNR?
The MSP430FR59941IPNR features an I²C-based bootloader (BSL) implemented on pins P1.6 (BSLSDA) and P1.7 (BSLSCL), whereas MSP430FR5994IPNR uses UART BSL on P2.0/P2.1. Both share identical FRAM, RAM, LEA, and peripheral specifications, and maintain pin-for-pin compatibility in the LQFP-80 package. The BSL interface difference affects firmware update methodology but not runtime functionality.
Does MSP430FR59941IPNR support hardware-accelerated FFT, and how is it accessed?
Yes, MSP430FR59941IPNR includes a dedicated Low-Energy Accelerator (LEA) that executes 256-point complex FFT in hardware, completing the operation up to 40× faster than CPU-only execution. Developers access LEA via TI's free MSP430Ware DSP library using standard C function calls-no assembly or DSP expertise required-and the accelerator operates concurrently with CPU tasks.
What is the minimum supply voltage for MSP430FR59941IPNR, and what limits it?
The MSP430FR59941IPNR operates from 1.8 V to 3.6 V. The minimum 1.8 V limit is enforced by the Supply Voltage Supervisor (SVS) thresholds-not by core logic-so actual functional lower bound depends on configured SVS levels. Below 1.8 V, SVS triggers reset; operation outside recommended conditions risks FRAM write integrity and peripheral timing compliance.
How many GPIOs does MSP430FR59941IPNR provide, and which packages support full I/O count?
MSP430FR59941IPNR provides up to 68 GPIOs in the LQFP-80 (IPNR) package, matching the maximum I/O count across the FR599x family. The NFBGA-87 (ZVW) variant also delivers 68 GPIOs, while the LQFP-64 (IPM) and VQFN-48 (RGZ) variants offer 54 and 40 GPIOs respectively due to reduced pin count.
Can MSP430FR59941IPNR perform capacitive touch sensing without external components?
Yes, all GPIO pins on MSP430FR59941IPNR support capacitive touch sensing (CTSIO) natively, with no external resistors, capacitors, or dedicated touch controller ICs required. The integrated CTSIO module uses charge-transfer measurement and supports button, slider, and wheel configurations through software-configurable thresholds and calibration routines in MSP430Ware.
MSP430FR59941IPNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-LQFP
- Series:
- MSP430™ FRAM
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 68
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 20x12b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR59941IPNR FAQ
1.How can I place an order for MSP430FR59941IPNR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR59941IPNR 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 MSP430FR59941IPNR reliable?
The price and inventory of MSP430FR59941IPNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR59941IPNR is usually 5 days.
3.What payment methods are accepted for MSP430FR59941IPNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR59941IPNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR59941IPNR?
MSP430FR59941IPNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR59941IPNR 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 MSP430FR59941IPNR?
For technical support, including MSP430FR59941IPNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR59941IPNR requirements.
6.How does Aetrix verify that MSP430FR59941IPNR is sourced from the original manufacturer or authorized distributors?
All MSP430FR59941IPNR 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 MSP430FR59941IPNR meets industry standards.
7.What is the process for return or replacement of MSP430FR59941IPNR?
All MSP430FR59941IPNR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR59941IPNR, 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 MSP430FR59941IPNR part is unused and in its original packaging.
Return procedure for MSP430FR59941IPNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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