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Texas Instruments MSP430FR68721IPMR
- Part No.:
- MSP430FR68721IPMR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430FR68721IPMR.pdf
- Description:
- IC MCU 16BIT 64KB FRAM 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,988
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Product details
Overview
MSP430FR68721IPMR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 64KB nonvolatile memory, 2KB RAM, and integrated LCD driver supporting up to 112 segments. It features dual eUSCI modules (UART/IrDA/SPI and I²C/SPI), 12-bit ADC with 8 external inputs, RTC with calendar, and operates from 1.8 V to 3.6 V - optimized for battery-powered utility meters and portable sensing.
For engineers reviewing the MSP430FR68721IPMR datasheet, MSP430FR68721IPMR pinout, MSP430FR68721IPMR application, or MSP430FR68721IPMR equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), LPM3.5 RTC current (0.35 µA), 64-pin LQFP package compatibility, and absence of AES256 encryption - distinguishing it from MSP430FR69xx variants.
Technical Context
This device belongs to the MSP430FR687x(1) family with DCO + HFXT + LFXT clock system, supporting up to 16-MHz operation. It integrates three 16-bit Timer_A instances (3/3/2 capture/compare registers) and one 16-bit Timer_B (2/5 registers), plus CRC16/CRC32 hardware accelerators and three-channel DMA - enabling deterministic real-time control in metering firmware.
The MCU implements capacitive touch I/O on all ports without external components, uses a unified FRAM memory space for code/data/storage, and excludes AES256 per documentation - confirming its role as a cost-optimized, secure-but-not-cryptographically-hardened variant for industrial sensing and display-driven endpoints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16-MHz operation - enables deterministic interrupt latency for time-critical metering tasks |
| Nonvolatile Memory | 64KB FRAM with 10¹⁵ write endurance - eliminates flash wear-out concerns in frequent logging applications |
| RAM | 2KB SRAM + 26B Tiny RAM - sufficient for real-time data buffering and low-power retention during LPM3.5 |
| Supply Voltage | 1.8 V to 3.6 V - supports direct LiSOCl₂ or dual-AA battery operation without external regulators |
| LPM3.5 Current | 0.35 µA typical with RTC active - extends 10-year battery life in heat cost allocators and static utility meters |
| ADC | 12-bit SAR with internal reference and 8 external channels - enables simultaneous sensor monitoring (temp, pressure, flow) |
| LCD Driver | Integrated 112-segment driver with contrast control - drives alphanumeric displays in thermostats and portable medical devices |
Pinout & Package
LQFP-64 package (10 mm × 10 mm, 0.5 mm pitch), thermally enhanced with exposed pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0–P1.7 | General-purpose I/O with capacitive touch, ADC input, timer I/O | Supports sensor interface, button detection, and analog front-end without external circuitry |
| P2.0–P2.3 | UART BSL TX/RX, RTCCLK, DMA trigger | Enables field firmware updates via UART and precise time-stamping of events |
| P3.0–P3.7 | eUSCI_B1 (I²C/SPI), eUSCI_A1 (UART/SPI), TB0 timer outputs | Connects to external sensors, communication transceivers, or LCD segment drivers |
| P6.0–P6.6 | LCD COM lines, RLCAP, REF, COUT | Directly drives multiplexed LCD panels up to 4-backplane configurations |
| PJ.4/PJ.5 | LFXIN/LFXOUT | Supports 32.768-kHz crystal for accurate RTC timing with ±20 ppm stability |
| RST/NMI/SBWTDIO | JTAG/SBW debug and reset | Enables in-system programming and low-overhead debugging without dedicated header |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 64KB unified memory with 125 ns write speed - enables real-time data logging at 8 kHz without wear leveling |
| Ultra-low-power modes | LPM3.5 draws only 0.35 µA with RTC running - sustains decade-long operation on coin-cell batteries |
| Capacitive touch I/O | All GPIO pins support touch sensing without external RC networks - reduces BOM count in thermostats and handheld devices |
| Hardware CRC engines | CRC16 (CCITT) and CRC32 (ISO-3309) accelerators - offloads checksum computation from CPU during firmware updates |
| Integrated LCD controller | 112-segment drive with programmable contrast and static/2–4 mux support - eliminates external display driver IC in utility meters |
Applications
| Heat Cost Allocators | Electricity/Water/Gas Meters |
|---|---|
Use Scenario: Installed in residential heating systems to measure radiator energy consumption over billing cycles. IC Role / Device Role / Timing Role: Primary controller managing temperature sampling, flow integration, RTC-based billing intervals, and LCD display. Use Value: FRAM enables tamper-proof hourly log storage; LPM3.5 current ensures >10-year battery life without maintenance. | Use Scenario: Embedded in residential utility meters for metrology, communication, and local display. IC Role / Device Role / Timing Role: Host processor executing metrology algorithms, driving LCD, and interfacing with optical/IR or RF communication modules. Use Value: Integrated 12-bit ADC supports precision sensor interfacing; eUSCI_A0/A1 enable dual-protocol communication (UART + SPI) to modems and sensors. |
| Thermostats | Portable Medical Equipment |
Use Scenario: Battery-powered wall-mounted HVAC controllers with ambient sensing and user interface. IC Role / Device Role / Timing Role: System-on-chip managing temperature/humidity ADC, capacitive touch buttons, LCD, and relay control. Use Value: All-port capacitive touch eliminates mechanical switches; FRAM stores calibration offsets and usage history without degradation. | Use Scenario: Handheld diagnostic tools requiring long runtime, sensor fusion, and readable display. IC Role / Device Role / Timing Role: Central controller acquiring analog sensor data, performing real-time signal processing, and updating segmented LCD. Use Value: Unified FRAM simplifies firmware updates; 2KB RAM supports multi-sensor buffering; 112-segment LCD driver enables clear status visualization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR6872IPMR | Includes UART-based BSL; identical FRAM, ADC, LCD, and timer resources | Same use cases but requires UART bootloader interface instead of I²C | Select when UART-based field firmware updates are preferred and I²C BSL is unnecessary |
| MSP430FR69721IPMR | Adds AES256 encryption coprocessor and HFXIN/HFXOUT pins; same package and core peripherals | Suitable for applications requiring cryptographic data protection (e.g., secure metering) | Choose when end-to-end data security is mandated; otherwise, MSP430FR68721IPMR offers cost advantage |
Compared with MSP430FR68721IPMR, the MSP430FR6872IPMR removes I²C BSL capability but retains full functional parity, while MSP430FR69721IPMR adds hardware crypto and high-frequency crystal support - making the original part optimal for cost-sensitive, non-secure, crystal-referenced metering designs.
Availability
MSP430FR68721IPMR is available at Aetrix Electronics and suitable for utility metering, portable medical instrumentation, and thermostat control requiring stable component supply across multi-year production cycles.
Supply support for MSP430FR68721IPMR 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 company delivering analog and embedded processing solutions for industrial, automotive, and consumer markets.
The MSP430FR687x(1) product line targets ultra-low-power, battery-operated sensing and display applications - emphasizing FRAM reliability, sub-µA RTC operation, and integrated peripherals to minimize external components in metering and portable equipment.
FAQ
Does MSP430FR68721IPMR include hardware AES encryption?
No. The MSP430FR68721IPMR does not implement AES256; this feature is exclusive to MSP430FR69xx(1) devices per the functional block diagram notes. The MSP430FR68721IPMR provides secure memory locking and IP encapsulation but no cryptographic acceleration - making it suitable for non-secure metering where data integrity relies on protocol-level measures rather than hardware encryption.
What is the maximum operating frequency of MSP430FR68721IPMR?
The MSP430FR68721IPMR supports up to 16 MHz via its factory-trimmed DCO or external HFXT crystal. This frequency is fully supported across all operating voltage ranges (1.8 V to 3.6 V), enabling high-speed ADC sampling, real-time signal processing, and responsive LCD updates without performance throttling.
Which package type does MSP430FR68721IPMR use?
The MSP430FR68721IPMR is supplied in a 64-pin LQFP package (10 mm × 10 mm body size, 0.5 mm pitch). This package includes an exposed thermal pad recommended to be soldered to DVSS for optimal thermal performance in continuous operation scenarios such as active metering or display driving.
How many external ADC input channels does MSP430FR68721IPMR support?
The MSP430FR68721IPMR supports up to 8 external analog input channels via its 12-bit ADC12_B module. These channels can be configured with internal reference, sample-and-hold, and programmable conversion sequences - enabling concurrent monitoring of temperature, pressure, battery voltage, and other analog sensors in utility meter or medical applications.
Is MSP430FR68721IPMR pin-compatible with MSP430FR69721IPMR?
Yes - both MSP430FR68721IPMR and MSP430FR69721IPMR share identical 64-pin LQFP packaging and pinout. However, MSP430FR69721IPMR adds HFXIN/HFXOUT pins (PJ.6/PJ.7) and AES256 functionality, while MSP430FR68721IPMR reserves those pins for general I/O. PCB layout is interchangeable, but firmware must account for missing AES and HFXT support in the MSP430FR68721IPMR.
MSP430FR68721IPMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-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, 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:
MSP430FR68721IPMR FAQ
1.How can I place an order for MSP430FR68721IPMR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR68721IPMR 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 MSP430FR68721IPMR reliable?
The price and inventory of MSP430FR68721IPMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR68721IPMR is usually 5 days.
3.What payment methods are accepted for MSP430FR68721IPMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR68721IPMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR68721IPMR?
MSP430FR68721IPMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR68721IPMR 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 MSP430FR68721IPMR?
For technical support, including MSP430FR68721IPMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR68721IPMR requirements.
6.How does Aetrix verify that MSP430FR68721IPMR is sourced from the original manufacturer or authorized distributors?
All MSP430FR68721IPMR 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 MSP430FR68721IPMR meets industry standards.
7.What is the process for return or replacement of MSP430FR68721IPMR?
All MSP430FR68721IPMR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR68721IPMR, 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 MSP430FR68721IPMR part is unused and in its original packaging.
Return procedure for MSP430FR68721IPMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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