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Texas Instruments MSP430FR69721IRGCR
- Part No.:
- MSP430FR69721IRGCR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR69721IRGCR.pdf
- Description:
- IC MCU 16BIT 64KB FRAM 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,339
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Product details
Overview
MSP430FR69721IRGCR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller featuring 64KB nonvolatile FRAM, 2KB RAM, AES-256 encryption coprocessor, 12-bit ADC with 8 external channels, and integrated 112-segment LCD driver. It operates from 1.8 V to 3.6 V and supports UART, I²C, SPI, and capacitive touch I/O - deployed in utility meters, thermostats, and portable medical devices.
For engineers reviewing the MSP430FR69721IRGCR datasheet, MSP430FR69721IRGCR pinout, MSP430FR69721IRGCR application, or MSP430FR69721IRGCR equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), RTC calendar mode in LPM3.5 (0.35 µA), AES-256 security, and I²C-based BSL for secure firmware updates.
Technical Context
The MSP430FR69721IRGCR implements a CPUXV2 core with 16 registers and integrates dual eUSCI modules: eUSCI_A0/A1 support UART with auto-baud detection and IrDA, while eUSCI_B0/B1 support I²C with multi-slave addressing and SPI up to 10 Mbps. Its clock system combines DCO (10 factory-trimmed frequencies), LFXT (32-kHz crystal), and HFXT (high-frequency crystal) sources.
Peripherals include three 16-bit Timer_A instances (TA0/TA1/TA3 with 3+3+5 capture/compare registers), one 16-bit Timer_B (TB0 with 2+5 registers), 32-bit hardware multiplier, three-channel DMA, CRC16/CRC32 engines, and an RTC with calendar/alarm functions clocked by a 3.7-pF crystal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16-MHz operation - enables deterministic real-time control with low gate count and minimal power overhead. |
| Nonvolatile Memory | 64KB FRAM with 10¹⁵ write endurance - eliminates flash wear-out concerns and enables logging at sensor node update rates without block management. |
| Power Consumption | LPM3.5 (RTC active): 0.35 µA typical - sustains calendar timekeeping for >10 years on a single CR2032 battery. |
| Analog Peripherals | 12-bit ADC with internal reference and 8 external inputs - supports precision sensor signal acquisition without external voltage references. |
| Security | AES-256 encryption/decryption coprocessor - accelerates secure boot, OTA updates, and data-at-rest protection in metering applications. |
| Package | VQFN-64 (9 mm × 9 mm, RGC) with exposed thermal pad - optimized for compact, thermally constrained industrial PCB layouts. |
| BSL Interface | I²C-based bootloader (BSL_DAT/BSL_CLK on P1.6/P1.7) - enables field firmware updates without JTAG hardware or UART pins. |
Pinout & Package
VQFN-64 (RGC) package with 0.5-mm pitch and exposed thermal pad recommended to be connected to DVSS. Pin numbering follows TI standard top-view orientation with Pin 1 at bottom-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.6 / P1.7 | BSL_DAT / BSL_CLK | I²C bootloader interface - enables secure firmware updates using only two GPIOs, freeing UART pins for application use. |
| PJ.4 / PJ.5 | LFXIN / LFXOUT | 32-kHz crystal oscillator terminals - required for RTC calendar mode and low-power timing; supports 3.7-pF crystal per spec. |
| P2.0 / P2.1 | UCA0SIMO / UCA0SOMI | UART TX/RX (eUSCI_A0) - default serial interface for debugging and host communication when BSL is not active. |
| P3.4–P3.7 | UCA1SIMO/UCA1SOMI/UCA1CLK/UCA1STE | eUSCI_A1 SPI master interface - supports high-speed peripheral expansion (e.g., external FRAM, sensors) at up to 10 Mbps. |
| P6.3–P6.6 | COM0–COM3 | LCD common outputs - drive up to 112-segment multiplexed LCD displays directly, eliminating external segment drivers. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 64KB unified memory space enabling simultaneous code execution, data logging, and parameter storage - no wait states or erase cycles required. |
| Capacitive Touch I/O | All GPIOs support CTSIO without external components - reduces BOM cost and board area for human-interface designs like thermostat keypads. |
| Low-Power RTC | Calendar mode in LPM3.5 draws only 0.35 µA - maintains accurate time/date across battery swaps in utility meter deployments. |
| Hardware Security | Dedicated AES-256 engine with true random number seed - offloads encryption from CPU, ensuring deterministic latency for secure communications. |
| Flexible Clock System | DCO with 10 factory-trimmed frequencies + LFXT/HFXT support - eliminates need for external clock sources in most applications while maintaining timing accuracy. |
Applications
| Heat Cost Allocators | Electricity/Water/Gas Meters |
|---|---|
Use Scenario: Battery-powered thermal energy measurement in apartment heating systems with periodic wireless reporting. IC Role / Device Role / Timing Role: Main controller managing temperature differential sampling, FRAM-based consumption logging, and RTC-scheduled RF wake-up. Use Value: 0.35 µA RTC current extends battery life beyond 10 years; FRAM endurance supports daily logging over 20+ years. | Use Scenario: Tamper-resistant utility meter with encrypted consumption data storage and remote firmware updates. IC Role / Device Role / Timing Role: Secure metering SoC handling metrology ADC, AES-256 encryption, and I²C BSL for field upgrades. Use Value: On-chip AES-256 prevents unauthorized firmware modification; FRAM ensures reliable data retention during power loss events. |
| Programmable Thermostats | Portable Medical Monitors |
Use Scenario: HVAC control unit with touchscreen interface, ambient sensing, and scheduled setpoint adjustments. IC Role / Device Role / Timing Role: System-on-chip managing capacitive touch input, LCD display, temperature/humidity ADC, and RTC-based scheduling. Use Value: Integrated LCD driver drives 112 segments directly; all-GPIO capacitive touch eliminates external ICs and calibration components. | Use Scenario: Handheld blood glucose or pulse oximeter requiring long battery life and clinical-grade data integrity. IC Role / Device Role / Timing Role: Data acquisition and security controller performing analog sensor conditioning, FRAM-based patient history storage, and encrypted Bluetooth LE transmission. Use Value: 12-bit ADC with internal reference achieves ±0.5% accuracy; FRAM's radiation resistance ensures reliability in clinical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR6972IRGCR | UART-based BSL; lacks AES-256; identical FRAM, ADC, LCD, and timer resources. | Suitable where secure firmware updates are not required and UART debug interface is preferred. | Select when cryptographic security is unnecessary and legacy UART BSL infrastructure exists. |
| MSP430FR69221IRGCR | No HFXT support; uses LFXT-only clock system; same AES-256, FRAM, and peripherals except reduced I/O count (52 vs 51). | Better suited for cost-sensitive, crystal-constrained designs where high-frequency timing is not needed. | Choose for simplified clock design and lower BOM cost where HFXT functionality is unused. |
Compared with MSP430FR6972IRGCR and MSP430FR69221IRGCR, the MSP430FR69721IRGCR uniquely balances I²C BSL security, full HFXT/LFXT clock flexibility, and 51 GPIOs - making it optimal for next-generation utility meters requiring both tamper resistance and precise time synchronization.
Availability
MSP430FR69721IRGCR is available at Aetrix Electronics and suitable for utility metering, programmable thermostats, and portable medical equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MSP430FR69721IRGCR 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 consumer applications.
The MSP430FR69xx family targets ultra-low-power sensing and metering applications, combining FRAM nonvolatility, integrated LCD, security, and sub-µA RTC to extend battery life in portable and fixed infrastructure devices.
FAQ
What distinguishes MSP430FR69721IRGCR from MSP430FR6972IRGCR?
The MSP430FR69721IRGCR features an I²C-based bootloader (BSL) using P1.6/BSL_DAT and P1.7/BSL_CLK, whereas the MSP430FR6972IRGCR uses UART-based BSL on P2.0/P2.1. Additionally, the MSP430FR69721IRGCR includes AES-256 encryption hardware, which is absent in the MSP430FR6972IRGCR. Both share identical FRAM size, ADC, LCD, and timer capabilities.
Does MSP430FR69721IRGCR support external high-frequency crystals?
Yes, the MSP430FR69721IRGCR supports HFXT (high-frequency crystal oscillator) via dedicated HFXIN/HFXOUT pins (PJ.6/PJ.7), enabling precise timing for USB, high-speed SPI, or RF subsystems. This capability is confirmed in the device comparison table and functional block diagram of the SLASE23E datasheet.
What is the maximum segment count supported by the integrated LCD driver in MSP430FR69721IRGCR?
The MSP430FR69721IRGCR 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 (Device Comparison) and matches the "112 seg" entry under LCD_C for the MSP430FR69721 row.
Can MSP430FR69721IRGCR operate from a 1.8-V supply?
Yes, the MSP430FR69721IRGCR operates across a wide supply range of 1.8 V to 3.6 V. The minimum voltage is constrained by SVS (supply voltage supervisor) thresholds, but 1.8 V is explicitly listed as the lower bound in the "Wide Supply Voltage Range" feature list and confirmed in Section 5.3 (Recommended Operating Conditions) of SLASE23E.
Is the RTC in MSP430FR69721IRGCR capable of calendar mode with alarm functionality?
Yes, the MSP430FR69721IRGCR includes RTC_C peripheral with full calendar mode (year/month/day/hour/minute/second), alarm registers, and interrupt generation. It operates in LPM3.5 at 0.35 µA typical and is clocked by the 32-kHz LFXT - a capability confirmed in Section 1.1 Features and Figure 1-1 functional block diagram.
MSP430FR69721IRGCR 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:
MSP430FR69721IRGCR FAQ
1.How can I place an order for MSP430FR69721IRGCR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR69721IRGCR 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 MSP430FR69721IRGCR reliable?
The price and inventory of MSP430FR69721IRGCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR69721IRGCR is usually 5 days.
3.What payment methods are accepted for MSP430FR69721IRGCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR69721IRGCR transactions.
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4.How is shipping managed for MSP430FR69721IRGCR?
MSP430FR69721IRGCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR69721IRGCR 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 MSP430FR69721IRGCR?
For technical support, including MSP430FR69721IRGCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR69721IRGCR requirements.
6.How does Aetrix verify that MSP430FR69721IRGCR is sourced from the original manufacturer or authorized distributors?
All MSP430FR69721IRGCR 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 MSP430FR69721IRGCR meets industry standards.
7.What is the process for return or replacement of MSP430FR69721IRGCR?
All MSP430FR69721IRGCR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR69721IRGCR, 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 MSP430FR69721IRGCR part is unused and in its original packaging.
Return procedure for MSP430FR69721IRGCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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