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Texas Instruments MSP430FR69721IRGCT
- Part No.:
- MSP430FR69721IRGCT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR69721IRGCT.pdf
- Description:
- IC MCU 16BIT 64KB FRAM 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:495
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Product details
Overview
MSP430FR69721IRGCT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller featuring 64KB nonvolatile FRAM, 2KB RAM, integrated 12-bit ADC with 8 external channels, 112-segment LCD driver, AES-256 encryption coprocessor, and dual eUSCI modules supporting UART, IrDA, SPI, and I²C. It operates from 1.8 V to 3.6 V and targets battery-powered utility meters and sensor nodes.
For engineers reviewing the MSP430FR69721IRGCT datasheet, MSP430FR69721IRGCT pinout, MSP430FR69721IRGCT application, or MSP430FR69721IRGCT equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), RTC-with-calendar in LPM3.5 (0.35 µA), capacitive touch I/O without external components, and I²C-based BSL for secure firmware updates.
Technical Context
The MSP430FR69721IRGCT implements the CPUXV2 core with 16 general-purpose registers and executes instructions at up to 16 MHz. Its clock system integrates DCO (10 factory-trimmed frequencies), LFXT (32-kHz crystal), and HFXT (high-frequency crystal) - with HFXT enabled per device family specification for MSP430FR697x(1) variants.
Peripherals include three 16-bit Timer_A instances (TA0/TA1/TA2 with 3+3+2 capture/compare registers), one 16-bit Timer_B (TB0 with 5 registers), CRC16/CRC32 hardware accelerators, and dual eUSCI_A (UART/IrDA/SPI) and eUSCI_B (I²C/SPI) modules - all confirmed for MSP430FR69721 in Table 3-2 and functional block diagram.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | CPUXV2 16-bit RISC core with 16 registers; enables deterministic real-time execution and low-cycle-count interrupt latency. |
| FRAM Capacity | 64 KB unified nonvolatile memory; supports simultaneous read/write, eliminates erase-before-write, and enables logging at 125 ns/word. |
| Supply Voltage Range | 1.8 V to 3.6 V; minimum voltage constrained by SVS thresholds - ensures stable operation across coin-cell and Li-ion battery discharge profiles. |
| RTC Power Consumption | 0.35 µA typical in LPM3.5 mode with calendar and alarm; enables decade-scale timekeeping on microampere budgets. |
| ADC Resolution & Channels | 12-bit SAR ADC with internal reference and sample-and-hold; supports up to 8 external analog inputs for sensor interfacing. |
| Security Engine | Hardware AES-256 coprocessor with true random number seed; provides authenticated encryption for firmware and data-at-rest protection. |
| Low-Power Modes | Seven defined modes including LPM4.5 (0.04 µA shutdown); enables rapid wake-up from deep sleep with configurable port-edge interrupts. |
Pinout & Package
VQFN-64 (RGC) package, 9 mm × 9 mm body size, exposed thermal pad (recommended connection to DVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0 / A0 / C0 / VREF− / VeREF− | Analog input / reference sink | Primary ADC channel 0 input; also serves as negative reference terminal for internal/external voltage references. |
| P1.6 / UCB0SIMO / UCB0SDA / BSL_DAT | I²C data / BSL interface | Configurable as I²C slave data line or I²C-based bootloader data pin - defines BSL communication path for secure programming. |
| P1.7 / UCB0SOMI / UCB0SCL / BSL_CLK | I²C clock / BSL interface | Configurable as I²C slave clock or I²C-based bootloader clock - pairs with P1.6 to enable factory- or field-programmable firmware updates. |
| P2.0 / UCA0SIMO / UCA0TXD / TB0.6 | UART transmit / timer output | Default UART TX pin for primary eUSCI_A0; also functions as Timer_B0 channel 6 output for PWM or capture timing. |
| PJ.4 / LFXIN | Low-frequency crystal input | Connects to 32.768-kHz crystal for RTC and low-power clocking; requires external 12.5 pF load capacitance per TI design guidelines. |
| PJ.5 / LFXOUT | Low-frequency crystal output | Drives 32.768-kHz crystal oscillator circuit; must be terminated with matching capacitor to ground for stable oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 64 KB unified memory space enabling instant write persistence, 10¹⁵ write endurance, and no wear leveling overhead. |
| Capacitive Touch I/O | All GPIO pins support touch sensing without external RC networks - reduces BOM cost and PCB area in human-interface designs. |
| Integrated LCD Driver | 112-segment static or 2–4 multiplex LCD drive with contrast control - supports direct display interface in metering and portable medical devices. |
| Hardware CRC Engine | Dedicated CRC16 (CCITT) and CRC32 (ISO-3309) accelerators - offloads checksum computation from CPU during firmware update or data transmission. |
| Memory Protection Unit (MPU) | Enables lockable FRAM segments for IP encapsulation and secure storage of keys or calibration data - prevents unauthorized read/write access. |
Applications
| Heat Cost Allocators | Electricity Meters |
|---|---|
Use Scenario: Thermal energy measurement in district heating systems using temperature differentials and flow rate sampling over multi-year deployments. IC Role / Device Role / Timing Role: Primary system controller managing RTD/thermistor reads, pulse counting for flow sensors, RTC-synchronized data logging, and LCD display. Use Value: FRAM enables reliable hourly consumption logging across 10+ years without flash wear-out; LPM3.5 RTC draws only 0.35 µA to maintain accurate billing timestamps. |
Use Scenario: Residential smart electricity meter with tamper detection, tariff switching, and local display requiring >10-year battery backup for metrology data retention. IC Role / Device Role / Timing Role: Metrology host processor executing ANSI C12.19-compliant data tables, AES-encrypted communication, and LCD-driven user interface. Use Value: AES-256 coprocessor secures firmware and usage data; 64 KB FRAM stores 36 months of 15-minute interval registers without garbage collection delays. |
| Thermostats | Portable Medical Devices |
Use Scenario: Battery-powered HVAC thermostat with ambient temperature/humidity sensing, occupancy detection via capacitive touch buttons, and scheduled setpoint control. IC Role / Device Role / Timing Role: System-on-chip integrating sensor acquisition, capacitive UI, RTC-based scheduling, and IR/RF communication stack. Use Value: All-GPIO capacitive touch eliminates dedicated touch controller IC; FRAM retains calibration and user preferences through power loss without delay. |
Use Scenario: Handheld glucose monitor or pulse oximeter requiring FDA-grade data integrity, low-power operation, and secure patient record storage. IC Role / Device Role / Timing Role: Data acquisition and security engine handling ADC sampling, encrypted SD card writes, and USB/I²C peripheral interface. Use Value: Hardware AES-256 ensures HIPAA-compliant data-at-rest encryption; 12-bit ADC with internal reference achieves ±0.5% full-scale accuracy for clinical-grade measurements. |
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 |
|---|---|---|---|
| MSP430FR6972IRGCT | UART-based BSL; identical FRAM/RAM/peripherals but lacks I²C BSL interface on P1.6/P1.7. | Suitable for designs requiring UART firmware updates or legacy toolchain compatibility. | Select when UART debug/programming infrastructure is already deployed and I²C BSL is unnecessary. |
| MSP430FR69221IRGCT | No HFXT support; limited to LFXT-only clocking; same FRAM/RAM but 116-segment LCD and 52 I/O vs. 51. | Better suited for cost-sensitive, crystal-constrained applications where high-frequency timing is not required. | Choose when HFXT is unused and higher segment count LCD or extra I/O is beneficial. |
Compared with MSP430FR6972IRGCT and MSP430FR69221IRGCT, the MSP430FR69721IRGCT uniquely combines I²C-based BSL security, full HFXT capability, and 51 GPIO - making it optimal for next-generation utility meters requiring field-upgradable firmware and precise time synchronization.
Availability
MSP430FR69721IRGCT is available at Aetrix Electronics and suitable for utility metering, portable medical instrumentation, and industrial sensor node applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MSP430FR69721IRGCT 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, with over 50 years of innovation in low-power microcontrollers and precision analog products.
The MSP430FR69xx family is designed for ultra-low-power sensing and measurement applications - emphasizing FRAM-based data logging, secure firmware execution, and extended battery life in metering and portable equipment.
FAQ
What distinguishes MSP430FR69721IRGCT from MSP430FR6972IRGCT?
The MSP430FR69721IRGCT features an I²C-based bootload interface (BSL) using pins P1.6 and P1.7, whereas the MSP430FR6972IRGCT uses UART-based BSL on P2.0/P2.1. Both share identical FRAM (64 KB), RAM (2 KB), peripherals, and VQFN-64 packaging. The BSL difference impacts programming infrastructure and secure firmware update architecture - MSP430FR69721IRGCT is preferred where I²C is the dominant board-level bus.
Does MSP430FR69721IRGCT support high-frequency crystal (HFXT) operation?
Yes, the MSP430FR69721IRGCT supports HFXT operation as confirmed in Table 3-1 and the functional block diagram for the MSP430FR697x(1) family. HFXT enables precise high-speed clocking for USB, high-resolution ADC sampling, or fast SPI communication - unlike MSP430FR692x(1) variants which omit HFXT.
What is the maximum segment count supported by the LCD driver in MSP430FR69721IRGCT?
The MSP430FR69721IRGCT integrates the LCD_C module supporting up to 112 segments in static or 2–4 multiplex configurations. This is explicitly stated in Table 3-1 and matches the device comparison for MSP430FR697x(1) family members - distinct from the 116-segment capability of MSP430FR692x(1) variants.
How does the FRAM endurance of MSP430FR69721IRGCT compare to traditional flash memory?
The MSP430FR69721IRGCT offers 10¹⁵ write cycles per FRAM word - exceeding typical flash endurance (10⁴–10⁵ cycles) by ten orders of magnitude. This eliminates wear leveling, enables direct register-style writes to nonvolatile memory, and guarantees data logging integrity over 10+ years of hourly timestamped entries without degradation.
Is the AES-256 encryption engine in MSP430FR69721IRGCT software-configurable for AES-128?
Yes, the MSP430FR69721IRGCT's hardware AES engine supports both 128-bit and 256-bit key lengths, as documented in Section 1.1 "Code Security and Encryption". The same coprocessor handles both modes - selection is controlled via configuration registers, allowing flexible trade-offs between security level and throughput in firmware implementations.
MSP430FR69721IRGCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-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, LCD, POR, PWM, WDT
- Number of I/O:
- 51
- 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 8x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR69721IRGCT FAQ
1.How can I place an order for MSP430FR69721IRGCT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR69721IRGCT 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 MSP430FR69721IRGCT reliable?
The price and inventory of MSP430FR69721IRGCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR69721IRGCT is usually 5 days.
3.What payment methods are accepted for MSP430FR69721IRGCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR69721IRGCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR69721IRGCT?
MSP430FR69721IRGCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR69721IRGCT 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 MSP430FR69721IRGCT?
For technical support, including MSP430FR69721IRGCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR69721IRGCT requirements.
6.How does Aetrix verify that MSP430FR69721IRGCT is sourced from the original manufacturer or authorized distributors?
All MSP430FR69721IRGCT 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 MSP430FR69721IRGCT meets industry standards.
7.What is the process for return or replacement of MSP430FR69721IRGCT?
All MSP430FR69721IRGCT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR69721IRGCT, 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 MSP430FR69721IRGCT part is unused and in its original packaging.
Return procedure for MSP430FR69721IRGCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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