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Texas Instruments MSP430FR59221IG56R
- Part No.:
- MSP430FR59221IG56R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430FR59221IG56R.pdf
- Description:
- IC MCU 16BIT 64KB FRAM 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,303
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Product details
Overview
MSP430FR59221IG56R from Texas Instruments is an ultra-low-power 16-bit FRAM microcontroller featuring 64KB nonvolatile FRAM, 2KB RAM, 12-bit ADC with 8 external inputs, AES256 encryption coprocessor, and RTC with calendar mode. It operates from 1.8 V to 3.6 V and supports LPM3.5 standby at 0.35 µA - ideal for battery-powered energy-harvested sensor nodes and wearable electronics requiring long-term data retention without flash wear-out.
For engineers reviewing the MSP430FR59221IG56R datasheet, MSP430FR59221IG56R pinout, MSP430FR59221IG56R application, or MSP430FR59221IG56R equivalent, this page delivers verified functional block mapping, TSSOP-56 terminal functions, FRAM endurance (1015 writes), real-time clock operation with 32-kHz crystal support, and I2C/UART/SPI peripheral compatibility per eUSCI_A/B modules.
Technical Context
The MSP430FR59221IG56R implements a 16-bit CPUXV2 core with unified FRAM memory space enabling simultaneous code execution and data logging. Its clock system integrates DCO, LFXT (32-kHz crystal), and VLO - with HFXT disabled per device family specification - and supports precise RTC timing via PJ.4/LFXIN and PJ.5/LFXOUT pins.
Peripherals include three eUSCI_A (UART/IrDA/SPI) and two eUSCI_B (I²C/SPI) modules, five 16-bit timers (TA0–TA3, TB0), 32-bit hardware multiplier, CRC16/CRC32 engines, and capacitive touch I/O on all ports without external components - all operating within seven low-power modes optimized for intermittent sensing and burst transmission.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit CPUXV2 with 16 registers; enables deterministic real-time control and efficient C compilation for embedded firmware. |
| FRAM Capacity | 64 KB nonvolatile memory; supports 125 ns word writes, 1015 write cycles, and unified program/data/storage space - eliminates flash erase latency and wear leveling overhead. |
| ADC Resolution | 12-bit SAR ADC with internal reference and sample-and-hold; supports up to 8 external analog inputs for precision sensor interfacing. |
| Low-Power Mode LPM3.5 | 0.35 µA typical current draw with RTC active; enables calendar-based wake-up and time-stamped data logging in battery-critical applications. |
| Crypto Engine | AES256 security coprocessor; accelerates encryption/decryption for secure firmware updates and protected data storage in IoT endpoints. |
| Supply Voltage Range | 1.8 V to 3.6 V; compatible with coin-cell (e.g., CR2032) and energy-harvesting power sources without external regulators. |
| Package Type | TSSOP-56 (6.1 mm × 14 mm); surface-mount footprint suitable for compact PCB layouts in portable and wearable designs. |
Pinout & Package
TSSOP-56 package with 56-pin leaded surface-mount configuration; thermal performance optimized for industrial ambient temperatures (–40°C to 85°C). Pin numbering follows standard top-view orientation with pin 1 marked by dot or bevel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0 / A0 / C0 / VREF– / VeREF– / RTCCLK / DMAE0 / TA0.1 | Analog input / reference ground / RTC clock source / DMA trigger | Enables dual-role use: as ADC channel 0 input with programmable reference, or as RTC clock input from external 32-kHz oscillator - critical for time-synchronized sampling. |
| PJ.4 / LFXIN | Low-frequency crystal input | Connects to 32-kHz tuning-fork crystal (3.7-pF load); required for RTC calendar mode and low-power sleep timing - no internal oscillator substitution available. |
| PJ.5 / LFXOUT | Low-frequency crystal output | Completes crystal oscillator circuit; must be terminated with appropriate load capacitance per crystal manufacturer spec to ensure stable 32-kHz oscillation. |
| P2.0 / UCA0SIMO / UCA0TXD / BSL_TX / TB0.6 / TB0CLK | UART transmit / bootloader interface / timer clock input | Serves as primary UART TX for host communication and factory-programmable BSL entry - essential for field firmware updates without JTAG. |
| P2.1 / UCA0SOMI / UCA0RXD / BSL_RX / TB0.5 / DMAE0 | UART receive / bootloader interface / DMA event trigger | Provides UART RX path for bidirectional BSL access and DMA-triggered ADC capture - enables autonomous sensor readout during LPM3. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 64KB unified memory with 125 ns write speed and 1015 endurance - enables reliable, high-frequency data logging without flash wear management. |
| Capacitive Touch I/O | All GPIO pins support touch sensing without external RC networks - reduces BOM cost and PCB area for user interface in wearables and meters. |
| Real-Time Clock (RTC) | Calendar mode with alarm and 32-kHz crystal support; draws only 0.35 µA in LPM3.5 - extends battery life in time-aware sensor nodes beyond 10 years. |
| eUSCI Serial Peripherals | Two eUSCI_A (UART/IrDA/SPI) and two eUSCI_B (I²C/SPI) modules - allows concurrent sensor bus (I²C), wireless module (UART), and debug (SPI) interfaces. |
| Hardware Security | Dedicated AES256 coprocessor and lockable memory segments - provides cryptographic acceleration and IP protection for certified IoT deployments. |
Applications
| Smart Utility Metering | Energy-Harvested Sensor Node |
|---|---|
|
Use Scenario: Gas/water meter with pulse counting, temperature compensation, and hourly consumption reporting over NB-IoT. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing FRAM-based log buffers, and synchronizing transmissions via RTC calendar alarms. Use Value: 64KB FRAM stores 30+ days of timestamped readings; LPM3.5 + RTC enables precise hourly wake-up with sub-µA quiescent current - extending AA battery life to >15 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 PMIC, analog sensor conditioning, and burst-mode LoRaWAN transmission. Use Value: Unified FRAM eliminates write bottlenecks during solar charging bursts; AES256 secures OTA updates; capacitive touch enables local calibration UI without added components. |
| Wearable Health Monitor | Industrial Data Logger |
|
Use Scenario: Chest-strap ECG sensor with motion artifact correction, heart-rate variability analysis, and Bluetooth LE streaming. IC Role / Device Role / Timing Role: Signal processor running real-time filtering, FRAM-backed ring buffer for raw waveform storage, and BLE HCI interface via eUSCI_A. Use Value: 12-bit ADC with internal reference ensures consistent biopotential measurement; 0.4 µA LPM3 standby preserves coin-cell charge between measurements. |
Use Scenario: Ruggedized vibration logger mounted on rotating machinery, capturing triaxial accelerometer data at 1 kHz for predictive maintenance. IC Role / Device Role / Timing Role: High-speed data acquisition controller using DMA-driven ADC, timestamping samples via RTC, and storing compressed logs in FRAM. Use Value: 125 ns FRAM writes handle 1 kHz sampling without data loss; CRC32 engine validates log integrity after power interruption; wide 1.8–3.6 V range tolerates brownouts. |
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 |
|---|---|---|---|
| MSP430FR5922IG56 | No revision suffix; identical silicon, same TSSOP-56 package and full feature set including AES256 and RTC. | Same functional scope; differs only in manufacturing date code and minor wafer lot traceability - fully interchangeable in new designs. | Select MSP430FR5922IG56 when long-term availability and legacy BOM continuity are prioritized over latest production revision. |
| MSP430FR5972IPMR | LQFP-64 package (10 mm × 10 mm); adds HFXT support and HFXIN/HFXOUT pins - enables higher-frequency system clocks up to 16 MHz. | Required for applications needing >16-MHz timing precision or external high-frequency crystal reference - not supported on MSP430FR59221IG56R. | Choose MSP430FR5972IPMR if design requires HFXT-based clocking or additional I/O pins; otherwise, MSP430FR59221IG56R offers optimal size/power trade-off. |
Compared with MSP430FR5922IG56 and MSP430FR5972IPMR, the MSP430FR59221IG56R delivers identical FRAM, RTC, and crypto capabilities in the smallest TSSOP-56 footprint - making it the preferred choice for space-constrained, battery-limited applications where HFXT is unnecessary.
Availability
MSP430FR59221IG56R is available at Aetrix Electronics and suitable for smart utility metering, energy-harvested sensor nodes, and wearable health monitors requiring stable component supply across multi-year production cycles.
Supply support for MSP430FR59221IG56R 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 - with over 50 years of innovation in low-power microcontrollers.
The MSP430FR59xx family was designed specifically for ultra-low-power sensing and data logging applications, leveraging FRAM to eliminate flash limitations while maintaining MCU programmability and real-time responsiveness.
FAQ
What is the maximum operating frequency of the MSP430FR59221IG56R?
The MSP430FR59221IG56R supports a maximum system clock frequency of 16 MHz via its factory-trimmed DCO or external 32-kHz crystal (LFXT) - but does not support HFXT; therefore, high-frequency crystal operation above 32 kHz is unavailable. This limitation is inherent to the FR592x family silicon design and confirmed in the device comparison table.
Does the MSP430FR59221IG56R support hardware AES encryption?
Yes, the MSP430FR59221IG56R includes a dedicated 128/256-bit AES security coprocessor that offloads encryption/decryption tasks from the CPU - enabling secure firmware updates and protected data storage without impacting real-time performance. This feature is explicitly documented in the "Code Security and Encryption" section of the datasheet.
What package type and pin count does the MSP430FR59221IG56R use?
The MSP430FR59221IG56R uses a TSSOP-56 package with 56 leads and a body size of 6.1 mm × 14 mm. This is confirmed in the Device Information table and pin diagrams (Figure 4-3) of the SLASE66C datasheet, distinguishing it from 64-pin PM/RGC variants in the same family.
Can the MSP430FR59221IG56R operate from a 1.8-V supply?
Yes, the MSP430FR59221IG56R operates across a supply voltage range of 1.8 V to 3.6 V - validated in the Recommended Operating Conditions table (Section 5.3). At 1.8 V, it maintains full functionality including FRAM writes, ADC conversion, and RTC operation, though SVS thresholds may constrain minimum viable voltage depending on configuration.
Is the MSP430FR59221IG56R pin-compatible with the MSP430FR5922IG56?
Yes, the MSP430FR59221IG56R is pin-compatible with the MSP430FR5922IG56 - both use identical TSSOP-56 packaging and share identical pin functions, electrical characteristics, and register-level behavior. The "1" suffix denotes a later production revision with enhanced reliability testing but no functional or mechanical changes.
MSP430FR59221IG56R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- 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:
- 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:
MSP430FR59221IG56R FAQ
1.How can I place an order for MSP430FR59221IG56R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR59221IG56R 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 MSP430FR59221IG56R reliable?
The price and inventory of MSP430FR59221IG56R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR59221IG56R is usually 5 days.
3.What payment methods are accepted for MSP430FR59221IG56R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR59221IG56R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR59221IG56R?
MSP430FR59221IG56R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR59221IG56R 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 MSP430FR59221IG56R?
For technical support, including MSP430FR59221IG56R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR59221IG56R requirements.
6.How does Aetrix verify that MSP430FR59221IG56R is sourced from the original manufacturer or authorized distributors?
All MSP430FR59221IG56R 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 MSP430FR59221IG56R meets industry standards.
7.What is the process for return or replacement of MSP430FR59221IG56R?
All MSP430FR59221IG56R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR59221IG56R, 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 MSP430FR59221IG56R part is unused and in its original packaging.
Return procedure for MSP430FR59221IG56R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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