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Texas Instruments MSP430FR5968IRGZT
- Part No.:
- MSP430FR5968IRGZT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR5968IRGZT.pdf
- Description:
- IC MCU 16BIT 48KB FRAM 48VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430FR5968IRGZT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller in a 48-pin VQFN package, featuring 48KB nonvolatile FRAM, 2KB RAM, 12-bit ADC with 16 external channels, RTC with calendar/alarm, and dual eUSCI modules (UART/IrDA/SPI + I²C/SPI). It targets energy-constrained sensor nodes and metering systems requiring long battery life and frequent data logging.
For engineers reviewing the MSP430FR5968IRGZT datasheet, MSP430FR5968IRGZT pinout, MSP430FR5968IRGZT application, or MSP430FR5968IRGZT equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), LPM3.5 current (0.25 µA typical), RTC support with LFXT crystal, 48-pin RGZ package compatibility, and UART/I²C bootloader capability.
Technical Context
The MSP430FR5968IRGZT implements the CPUXV2 16-bit RISC core with 16-MHz max clock, integrated 32-bit hardware multiplier and 3-channel DMA. Its memory subsystem unifies 48KB FRAM for code, data, and storage-enabling instant writes without erase cycles and eliminating flash wear-out concerns.
Peripherals include five 16-bit timers (TA0–TA3, TB0), AES256 encryption coprocessor, capacitive touch I/O on all pins, and dual eUSCI modules supporting UART (with auto-baud detection), IrDA, SPI, and I²C. The RTC_B module requires LFXT crystal connection (LFXIN/LFXOUT) and operates in LPM3.5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | CPUXV2 16-bit RISC, up to 16 MHz clock - enables deterministic real-time control with low power overhead |
| Nonvolatile Memory | 48KB FRAM - supports unlimited write cycles, zero-latency writes, and unified program/data/storage space |
| RAM | 2KB SRAM - sufficient for stack, heap, and real-time buffer operations in ultra-low-power modes |
| ADC | 12-bit SAR ADC with 16 external inputs - provides high-resolution analog sensing for metering and sensor fusion |
| RTC | Real-Time Clock with calendar and alarm - operates in LPM3.5 at 0.25 µA typical, requires 32-kHz LFXT crystal |
| Low-Power Modes | LPM3.5 = 0.25 µA, LPM4.5 = 0.02 µA - enables multi-year battery life in shutdown or RTC-wake scenarios |
| eUSCI Peripherals | eUSCI_A0/A1 (UART/IrDA/SPI), eUSCI_B0 (I²C/SPI) - supports dual-protocol communication and hardware BSL |
Pinout & Package
Package: 48-pin VQFN (RGZ), 7 mm × 7 mm body size, thermal pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0.1/DMAE0/RTCCLK/A0/C0/VREF-/VeREF- | Multi-function I/O | RTC calibration output, ADC channel A0 input, comparator C0 input, and negative reference source - critical for precision timing and analog front-end |
| P1.1/TA0.2/TA1CLK/COUT/A1/C1/VREF+/VeREF+ | Multi-function I/O | Positive reference source, ADC channel A1 input, comparator output - enables ratiometric measurements and internal reference use |
| PJ.4/LFXIN & PJ.5/LFXOUT | Crystal oscillator terminals | Required for RTC_B operation; accepts 32-kHz crystal (3.7-pF load) - defines real-time accuracy and ultra-low-power sleep mode timing |
| P2.0/TB0.6/UCA0TXD/UCA0SIMO/TB0CLK/ACLK & P2.1/TB0.0/UCA0RXD/UCA0SOMI/TB0.0 | UART interface pins | Primary UART (eUSCI_A0) TX/RX - supports automatic baud-rate detection and hardware bootloader (BSL) entry |
| P1.6/TB0.3/UCB0SIMO/UCB0SDA/TA0.0 & P1.7/TB0.4/UCB0SOMI/UCB0SCL/TA1.0 | I²C interface pins | Secondary eUSCI_B0 SDA/SCL - enables I²C slave communication and optional I²C-based BSL configuration |
| RST/NMI/SBWTDIO & TEST/SBWTCK | JTAG/Spy-Bi-Wire debug | 2-wire debug interface - allows full programming, debugging, and boundary-scan without dedicated JTAG header |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 48KB unified memory with 125 ns write time per word and 10¹⁵ write-cycle endurance - eliminates flash erase latency and wear leveling firmware |
| Ultra-Low-Power RTC | 0.25 µA typical in LPM3.5 with calendar/alarm - enables precise wake-up scheduling and timestamped data logging without external RTC |
| Capacitive Touch I/O | All GPIO pins support capacitive touch sensing without external components - reduces BOM cost and PCB area in wearable and HMI designs |
| AES256 Security Coprocessor | Hardware-accelerated encryption/decryption - secures firmware updates, sensor data, and wireless payloads without CPU overhead |
| EnergyTrace++™ Integration | Real-time current profiling and peripheral activity tracing - accelerates ultra-low-power optimization during development |
Applications
| Smart Utility Metering | Energy-Harvesting Sensor Node |
|---|---|
Use Scenario: Gas/water/electricity meter with hourly consumption logging, tamper detection, and RF transmission. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing FRAM-based log storage, and driving RTC-triggered wake-ups. Use Value: 48KB FRAM stores >1 year of 15-minute interval logs; LPM4.5 (0.02 µA) extends battery life beyond 10 years. | Use Scenario: Solar-powered environmental monitor measuring temperature, humidity, and light intensity every 5 minutes. IC Role / Device Role / Timing Role: System-on-chip managing energy harvesting regulation, sensor acquisition, and burst-mode RF transmission. Use Value: Capacitive touch I/O enables self-test buttons; RTC-driven LPM3.5 wake-up minimizes active time per measurement cycle. |
| Wearable Health Monitor | Industrial Data Logger |
Use Scenario: Chest-strap ECG device with motion artifact compensation, Bluetooth LE connectivity, and onboard waveform storage. IC Role / Device Role / Timing Role: Signal processor acquiring analog biopotentials, applying digital filtering, and buffering raw data in FRAM before BLE transmission. Use Value: 12-bit ADC with internal reference ensures consistent gain across temperature; FRAM write speed (125 ns/word) captures transient waveforms without loss. | Use Scenario: DIN-rail mounted logger recording voltage, current, and temperature in industrial control cabinets over 30-day intervals. IC Role / Device Role / Timing Role: Standalone data acquisition unit with isolated analog inputs, CRC-16 checksummed FRAM storage, and scheduled USB/UART dump. Use Value: 16-channel ADC supports multiple sensor types; AES256 encrypts stored data to meet industrial cybersecurity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power FRAM microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR5969IRGZT | 64KB FRAM, same 48-pin RGZ package, identical peripherals and pinout - differs only in FRAM capacity | Preferred when >48KB persistent storage is required for firmware OTA, extended logging, or cryptographic key tables | Select MSP430FR5969IRGZT if FRAM headroom is needed; otherwise MSP430FR5968IRGZT offers optimal cost/performance balance |
| MSP430FR5948IRHA | 48KB FRAM, 40-pin VQFN (6×6 mm), LFXT-only clock system - lacks HFXT and HFXIN/HFXOUT pins | Suitable for space-constrained designs where high-frequency crystal is unnecessary and RTC-only timing suffices | Choose MSP430FR5948IRHA for smaller footprint and lower pin count; verify absence of HFXT requirement in target system |
Compared with MSP430FR5969IRGZT and MSP430FR5948IRHA, the MSP430FR5968IRGZT delivers the optimal trade-off between FRAM capacity (48KB), package size (48-pin RGZ), and full clock flexibility (HFXT + LFXT), making it ideal for mid-tier ultra-low-power applications demanding balanced resources and proven layout compatibility.
Availability
MSP430FR5968IRGZT is available at Aetrix Electronics and suitable for smart metering, energy-harvesting sensor nodes, and wearable electronics requiring stable component supply and long-term production support.
Supply support for MSP430FR5968IRGZT 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 for industrial, automotive, and consumer markets.
The MSP430 ULP FRAM portfolio targets energy-constrained applications such as metering, sensor networks, and wearables, combining ferroelectric memory with holistic ultra-low-power architecture to extend battery life while increasing performance.
FAQ
What is the maximum operating frequency of the MSP430FR5968IRGZT?
The MSP430FR5968IRGZT supports a maximum CPU clock frequency of 16 MHz using its factory-trimmed DCO or external HFXT crystal. This frequency is fully supported across the specified operating voltage range (1.8 V to 3.6 V) and enables real-time signal processing and fast FRAM writes without violating timing specifications.
Does the MSP430FR5968IRGZT include hardware AES encryption?
Yes, the MSP430FR5968IRGZT integrates a dedicated 128-bit or 256-bit AES security coprocessor. This hardware accelerator performs encryption and decryption independently of the CPU, enabling secure firmware updates, encrypted sensor data storage in FRAM, and protected wireless communication without compromising real-time performance.
What crystal is required for RTC operation on the MSP430FR5968IRGZT?
The MSP430FR5968IRGZT requires a 32-kHz low-frequency crystal (LFXT) connected to PJ.4/LFXIN and PJ.5/LFXOUT for RTC_B module operation. TI specifies a 3.7-pF load capacitance crystal; using this value ensures accurate timekeeping and stable LPM3.5 current (0.25 µA typical) as characterized in the datasheet.
How many I/O pins support capacitive touch sensing on the MSP430FR5968IRGZT?
All general-purpose I/O pins on the MSP430FR5968IRGZT support capacitive touch sensing without external components. This includes all 40 GPIOs across ports P1–P4 and PJ, enabling robust touch button, slider, or wheel implementations directly in firmware using the built-in CapTIvate™-compatible peripheral logic.
Is the MSP430FR5968IRGZT pin-compatible with other devices in the MSP430FR596x family?
Yes, the MSP430FR5968IRGZT shares identical 48-pin VQFN (RGZ) package dimensions, pinout, and electrical characteristics with MSP430FR5969IRGZT, MSP430FR5967IRGZT, and MSP430FR59691IRGZT. This allows direct substitution within the same footprint when FRAM capacity or BSL protocol (UART vs. I²C) aligns with system requirements.
MSP430FR5968IRGZT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-VFQFN Exposed Pad
- 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, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 48KB (48K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR5968IRGZT FAQ
1.How can I place an order for MSP430FR5968IRGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5968IRGZT 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 MSP430FR5968IRGZT reliable?
The price and inventory of MSP430FR5968IRGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5968IRGZT is usually 5 days.
3.What payment methods are accepted for MSP430FR5968IRGZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5968IRGZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5968IRGZT?
MSP430FR5968IRGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5968IRGZT 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 MSP430FR5968IRGZT?
For technical support, including MSP430FR5968IRGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5968IRGZT requirements.
6.How does Aetrix verify that MSP430FR5968IRGZT is sourced from the original manufacturer or authorized distributors?
All MSP430FR5968IRGZT 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 MSP430FR5968IRGZT meets industry standards.
7.What is the process for return or replacement of MSP430FR5968IRGZT?
All MSP430FR5968IRGZT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5968IRGZT, 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 MSP430FR5968IRGZT part is unused and in its original packaging.
Return procedure for MSP430FR5968IRGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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