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Texas Instruments MSP430FR59691IRGZT
- Part No.:
- MSP430FR59691IRGZT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR59691IRGZT.pdf
- Description:
- IC MCU 16BIT 64KB FRAM 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,555
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Product details
Overview
MSP430FR59691IRGZT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 64KB nonvolatile memory, 2KB RAM, 12-bit ADC (16 external channels), RTC with calendar/alarm, and dual eUSCI modules supporting UART, SPI, and I²C. It operates from 1.8 V to 3.6 V and targets energy-constrained sensor nodes and metering systems.
For engineers reviewing the MSP430FR59691IRGZT datasheet, MSP430FR59691IRGZT pinout, MSP430FR59691IRGZT application, or MSP430FR59691IRGZT equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), LPM3.5 current (0.25 µA), 48-pin VQFN package compatibility, and I²C-based BSL support-critical for secure firmware updates in field-deployed devices.
Technical Context
The MSP430FR59691IRGZT integrates a CPUXV2 core with 16 registers, a 32-bit hardware multiplier, and three-channel DMA for efficient signal processing. Its clock system includes DCO (10 factory-trimmed frequencies), LFXT (32-kHz crystal), and HFXT (high-frequency crystal) oscillators-enabling precise timing across active and low-power modes.
Peripherals are tightly coupled to power management: RTC_B operates only with LFXT; eUSCI_B0 supports I²C with multiple slave addressing and SPI; AES256 coprocessor enables on-the-fly encryption; and all I/O pins support capacitive touch without external components-reducing BOM count in wearable and sensor applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16 MHz clock-enables deterministic real-time control with minimal code footprint. |
| Nonvolatile Memory | 64KB FRAM with 10¹⁵ write cycles-eliminates flash wear-out concerns in frequent data-logging applications. |
| RAM | 2KB SRAM-sufficient for stack, buffers, and real-time variables in embedded sensor firmware. |
| ADC | 12-bit ADC with 16 external input channels and internal reference-supports simultaneous voltage, temperature, and analog sensor acquisition. |
| Low-Power Modes | LPM3.5 draws 0.25 µA (typical) with RTC active-enables multi-year battery life in metering and environmental monitors. |
| eUSCI Peripherals | eUSCI_A0/A1 (UART/IrDA/SPI) + eUSCI_B0 (I²C/SPI)-provides dual serial interfaces for sensor hub communication and bootloader flexibility. |
| Security | 256-bit AES coprocessor + random number seed-enables secure firmware signing and encrypted data storage per regulatory requirements. |
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, and negative reference source-enables time-stamped sensor sampling with integrated reference. |
| P1.6/TB0.3/UCB0SIMO/UCB0SDA/TA0.0 | I²C data line | BSLSDA for I²C bootloader interface-allows firmware updates over two-wire bus without UART hardware. |
| P1.7/TB0.4/UCB0SOMI/UCB0SCL/TA1.0 | I²C clock line | BSLSCL for I²C bootloader-enables secure, low-pin-count firmware recovery in space-constrained designs. |
| PJ.4/LFXIN & PJ.5/LFXOUT | 32-kHz crystal interface | Required for RTC_B operation-supports calendar/timekeeping with ±20 ppm accuracy using standard tuning-fork crystals. |
| PJ.6/HFXIN & PJ.7/HFXOUT | High-frequency crystal interface | Enables precise system clocking up to 24 MHz-required for high-speed ADC sampling or USB bridge timing. |
| RST/NMI/SBWTDIO | Reset/debug I/O | Supports Spy-Bi-Wire debug and NMI wake-up-enables in-circuit debugging and fault-triggered recovery without dedicated JTAG pins. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 64KB unified memory space enabling atomic writes, zero-wear endurance, and instant nonvolatile storage-ideal for logging interrupted events in utility meters. |
| Capacitive Touch I/O | All GPIO pins support touch sensing without external RC networks-reduces component count and PCB area in wearable and HMI designs. |
| Hardware CRC16 | Dedicated peripheral computes checksums at bus speed-ensures data integrity in wireless sensor node packet transmission and FRAM sector verification. |
| EnergyTrace++™ Support | Real-time current profiling down to µA resolution-accelerates ultra-low-power optimization during firmware development and validation. |
| Memory Protection Unit (MPU) | Prevents unauthorized code execution and data access-meets IEC 62443 requirements for secure industrial edge devices. |
Applications
| Smart Utility Metering | Energy-Harvesting Sensor Node |
|---|---|
Use Scenario: Two-way AMI meter with tamper detection, tariff switching, and hourly consumption logging. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing FRAM-based log buffers, and maintaining RTC-synchronized billing cycles. Use Value: 64KB FRAM enables 30+ days of second-resolution energy logs; LPM3.5 current ensures >10-year battery life with supercapacitor backup. | Use Scenario: Wireless soil moisture and temperature node powered by solar cell + thin-film battery. IC Role / Device Role / Timing Role: System-on-chip managing ADC sampling, I²C sensor reads, AES-encrypted BLE packet assembly, and RTC-governed sleep/wake cycles. Use Value: Unified FRAM eliminates erase-before-write delays; 0.25 µA RTC mode extends runtime between harvest events by 3× vs. flash-based MCUs. |
| Wearable Health Monitor | Industrial Data Logger |
Use Scenario: Chest-strap ECG monitor with motion artifact compensation and Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Front-end signal processor acquiring analog leads, running real-time QRS detection, and buffering waveform snippets in FRAM before transmission. Use Value: Capacitive touch I/O enables on-device buttonless control; 12-bit ADC with internal ref ensures consistent gain across temperature drift. | Use Scenario: DIN-rail mounted logger capturing vibration, temperature, and humidity in HVAC systems. IC Role / Device Role / Timing Role: Standalone data aggregator with timestamped FRAM storage, watchdog-triggered recovery, and UART-to-Modbus gateway logic. Use Value: AES256 encrypts stored sensor history; 10¹⁵ FRAM writes guarantee 20+ years of daily 10MB logging without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR5969IRGZT | UART-based BSL instead of I²C; identical FRAM, ADC, and power specs. | Preferred where UART debug port is already allocated and I²C bus is congested. | Select when legacy toolchain integration or UART bootloader infrastructure exists. |
| MSP430FR5949IRHA | 40-pin VQFN, 64KB FRAM, but LFXT-only (no HFXT), 33 I/O pins vs. 40. | Suitable for cost-sensitive, lower-pin-count designs without high-speed peripherals. | Choose for simplified clock tree and reduced PCB layer count where HFXT and extra I/O are unnecessary. |
Compared with MSP430FR5969IRGZT and MSP430FR5949IRHA, the MSP430FR59691IRGZT uniquely balances I²C bootloader security, full HFXT/LFXT flexibility, and maximum I/O count in the 48-pin RGZ package-making it optimal for next-generation sensor hubs requiring field-upgradable firmware and multi-sensor synchronization.
Availability
MSP430FR59691IRGZT is available at Aetrix Electronics and suitable for smart metering, energy-harvesting sensor nodes, and wearable electronics requiring stable component supply and long-term lifecycle assurance.
Supply support for MSP430FR59691IRGZT 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 and embedded processing solutions for industrial, automotive, and personal electronics markets.
The MSP430 ULP FRAM portfolio targets energy-constrained applications-designed to extend battery life while enabling high-speed, wear-free data logging and secure firmware execution in metering, sensing, and IoT endpoints.
FAQ
What distinguishes MSP430FR59691IRGZT from MSP430FR5969IRGZT?
The MSP430FR59691IRGZT features an I²C-based hardware bootloader (BSL) using P1.6/BSLSDA and P1.7/BSLSCL, whereas the MSP430FR5969IRGZT uses UART-based BSL on P2.0/BSLTX and P2.1/BSLRX. Both share identical FRAM, ADC, RTC, and power specifications. The I²C BSL reduces pin count overhead in systems where UART is reserved for application use, and enhances security through address-based slave selection.
Does MSP430FR59691IRGZT support both LFXT and HFXT crystal oscillators?
Yes, MSP430FR59691IRGZT supports both LFXT (32-kHz crystal on PJ.4/PJ.5) and HFXT (high-frequency crystal on PJ.6/PJ.7). This dual-crystal capability enables simultaneous RTC calendar operation and high-precision system clocking up to 24 MHz-critical for time-synchronized sensor fusion and high-speed ADC sampling in the MSP430FR59691IRGZT.
What is the role of the 64KB FRAM in MSP430FR59691IRGZT for data-logging applications?
The 64KB FRAM in MSP430FR59691IRGZT serves as unified nonvolatile memory for program code, runtime variables, and logged data-enabling atomic writes without erase cycles. With 10¹⁵ write endurance and 125 ns per word write speed, it supports continuous second-resolution logging for over 30 days in utility meters, eliminating flash wear-out and write-latency bottlenecks present in conventional MCUs.
How does the capacitive touch capability of MSP430FR59691IRGZT reduce BOM cost?
The MSP430FR59691IRGZT integrates capacitive touch sensing on all GPIO pins without requiring external RC networks or dedicated touch controller ICs. This eliminates discrete resistors, capacitors, and associated layout area-reducing BOM cost by $0.15–$0.30 per unit and simplifying certification for EN 61000-4-6 immunity in wearable and industrial HMI designs.
Is MSP430FR59691IRGZT qualified for industrial temperature range operation?
Yes, MSP430FR59691IRGZT is specified for operation from –40°C to 85°C ambient temperature, meeting industrial-grade reliability requirements. Its SVS (supply voltage supervisor) and brownout protection operate across this full range, and the FRAM retains data integrity without refresh-ensuring robust performance in uncontrolled environments like outdoor metering and factory-floor data loggers.
MSP430FR59691IRGZT 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:
- 64KB (64K 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:
MSP430FR59691IRGZT FAQ
1.How can I place an order for MSP430FR59691IRGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR59691IRGZT 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 MSP430FR59691IRGZT reliable?
The price and inventory of MSP430FR59691IRGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR59691IRGZT is usually 5 days.
3.What payment methods are accepted for MSP430FR59691IRGZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR59691IRGZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR59691IRGZT?
MSP430FR59691IRGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR59691IRGZT 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 MSP430FR59691IRGZT?
For technical support, including MSP430FR59691IRGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR59691IRGZT requirements.
6.How does Aetrix verify that MSP430FR59691IRGZT is sourced from the original manufacturer or authorized distributors?
All MSP430FR59691IRGZT 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 MSP430FR59691IRGZT meets industry standards.
7.What is the process for return or replacement of MSP430FR59691IRGZT?
All MSP430FR59691IRGZT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR59691IRGZT, 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 MSP430FR59691IRGZT part is unused and in its original packaging.
Return procedure for MSP430FR59691IRGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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