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Texas Instruments MSP430FR5735IRHAT
- Part No.:
- MSP430FR5735IRHAT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR5735IRHAT.pdf
- Description:
- IC MCU 16BIT 8KB FRAM 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:470
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Product details
Overview
MSP430FR5735IRHAT from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 8 KB FRAM nonvolatile memory, 1 KB RAM, and integrated peripherals including a 10-bit ADC (12 external + 2 internal channels), 16-channel analog comparator, five 16-bit timers, dual eUSCI_A (UART/IrDA/SPI) and eUSCI_B (I²C/SPI) modules, RTC with calendar, and hardware multiplier. It operates from 2 V to 3.6 V across –40°C to 85°C and targets battery-powered sensor nodes and data acquisition systems.
For engineers reviewing the MSP430FR5735IRHAT datasheet, MSP430FR5735IRHAT pinout, MSP430FR5735IRHAT application, or MSP430FR5735IRHAT equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), LPM3.5 RTC current (1.5 µA), 200 ksps ADC throughput at 100 µA, and RHA package compatibility with 40-pin QFN layout constraints.
Technical Context
The MSP430FR5735IRHAT implements the MSP430xV2 CPU core with 16-bit RISC architecture and executes instructions at up to 8 MHz. Its memory subsystem integrates FRAM for unified program/data/storage with built-in ECC and MPU, eliminating flash erase/write delays and enabling true zero-cycle writes.
Peripherals are managed via three-channel DMA and clocked by a flexible system clock tree supporting DCO (factory-trimmed frequencies), VLO, LFXT (32 kHz crystal), and HFXT. Power management includes SVS, BOR, and zero-power brownout detection, enabling robust operation in energy-constrained environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit MSP430xV2 RISC CPU, 8-MHz max clock - enables deterministic real-time control with low code footprint |
| FRAM Capacity | 8 KB nonvolatile memory - supports firmware updates, logging, and parameter storage without wear leveling or erase cycles |
| ADC Resolution & Speed | 10-bit, 200 ksps - captures fast transients in sensor interfaces while consuming only 100 µA during conversion |
| Low-Power Mode LPM3.5 | 1.5 µA with RTC + 32-kHz crystal - sustains timekeeping and wake-up capability for multi-year battery life |
| Supply Voltage Range | 2.0 V to 3.6 V - compatible with single-cell Li-ion, Li-SOCl₂, and two-cell alkaline battery systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial and outdoor environmental monitoring deployments |
| I/O Count (RHA) | 32 GPIO pins - provides sufficient digital and analog signal routing for compact sensor hub designs |
Pinout & Package
VQFN-40 (RHA) package, 6 mm × 6 mm body, 0.5-mm pitch, exposed thermal pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0.1/DMAE0/RTCCLK/A0*/CD0/VeREF- | Multi-function I/O | Primary RTC calibration output, ADC channel A0 input, comparator CD0, and DMA trigger source |
| P1.1/TA0.2/TA1CLK/CDOUT/A1*/CD1/VeREF+ | Multi-function I/O | ADC reference voltage input (VeREF+), comparator output, timer clock source, and analog input A1 |
| P1.4/TB0.1/UCA0STE/A4*/CD4 | Multi-function I/O | eUSCI_A0 SPI slave transmit enable, ADC channel A4, and comparator CD4 input |
| PJ.4/XIN & PJ.5/XOUT | Clock Input/Output | Connects to 32-kHz crystal for RTC accuracy or high-frequency crystal for system clock |
| RST/NMI/SBWTDIO | Reset & Debug | Active-low reset, non-maskable interrupt, and bidirectional Spy-Bi-Wire debug I/O |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 8 KB unified memory with 10¹⁵ write endurance, 125 ns word write, and ECC protection - eliminates flash wear-out concerns in frequent data logging |
| Ultra-Low-Power Operation | LPM3 standby at 6.3 µA and LPM4.5 shutdown at 0.32 µA - extends coin-cell battery life beyond 10 years in sleep-dominated applications |
| Integrated Analog Subsystem | 12-channel 10-bit ADC with internal reference and sample-and-hold, plus 16-channel comparator with programmable hysteresis - enables autonomous analog threshold detection without CPU intervention |
| Dual Enhanced USCI | eUSCI_A0/A1 support UART (with auto-baud), IrDA, and SPI; eUSCI_B0 supports I²C (multi-slave addressing) and SPI - simplifies connectivity to sensors, radios, and host processors |
| Real-Time Clock with Calendar | RTC_B module with alarm, calendar, and crystal oscillator support - delivers accurate time-stamping and scheduled wake-up for periodic sensing tasks |
Applications
| Smart Metering Node | Industrial Sensor Hub |
|---|---|
Use Scenario: Battery-powered electricity/water meter collecting pulse counts, temperature, and tamper events over 10+ years. IC Role / Device Role / Timing Role: Main controller executing metrology firmware, managing FRAM-based event logs, and waking every 15 minutes via RTC alarm to read sensors and transmit data. Use Value: 1.5 µA LPM3.5 RTC current and 8 KB FRAM enable decade-long operation without memory degradation or firmware update failures. | Use Scenario: DIN-rail mounted enclosure aggregating temperature, humidity, and vibration data from 8 analog sensors for predictive maintenance. IC Role / Device Role / Timing Role: Central data acquisition unit running ADC sequences, applying comparator hysteresis for edge-triggered alerts, and buffering results in FRAM before Ethernet upload. Use Value: 200 ksps ADC throughput at 100 µA and 16-channel comparator allow concurrent analog monitoring with minimal power overhead. |
| Wireless Environmental Monitor | Asset Tracking Beacon |
Use Scenario: Solar-recharged outdoor node measuring air quality (CO₂, NOₓ), barometric pressure, and ambient light. IC Role / Device Role / Timing Role: System manager coordinating sensor polling, FRAM-based history storage, and low-duty-cycle LoRaWAN transmission using eUSCI_A1 UART interface. Use Value: Dual eUSCI modules permit simultaneous sensor communication (I²C) and radio control (UART), while FRAM ensures reliable log persistence during intermittent power. | Use Scenario: GPS-denied indoor asset tag reporting location via BLE beaconing and motion-triggered accelerometer wake-up. IC Role / Device Role / Timing Role: Ultra-low-power state machine detecting movement via GPIO-wake, capturing timestamped orientation data, and storing in FRAM until BLE connection is established. Use Value: 0.32 µA LPM4.5 shutdown current and fast FRAM writes (<1 ms for 8 KB) minimize energy per event capture and eliminate flash write latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR5738IRHAT | 16 KB FRAM, same RHA package and peripheral set - adds 8 KB nonvolatile storage capacity | Preferred where extended firmware versioning, larger configuration tables, or longer event history are required | Select when FRAM capacity >8 KB is needed without changing PCB layout or software abstraction layer |
| MSP430FR2476TRHBT | 16 KB FRAM, 64 MHz FRAM-optimized CPU, but no RTC_B or comparator_D - uses different clock architecture and reduced analog integration | Suited for higher-throughput control tasks without calendar-aware timing or analog thresholding | Choose for cost-sensitive, compute-intensive applications where RTC and comparator features are unnecessary |
Compared with MSP430FR5738IRHAT, the MSP430FR5735IRHAT trades FRAM capacity for identical analog/peripheral feature parity in the same footprint; versus MSP430FR2476TRHBT, it retains RTC and comparator functionality critical for time-synchronized sensing but operates at lower maximum frequency.
Availability
MSP430FR5735IRHAT is available at Aetrix Electronics and suitable for smart metering, industrial sensor hubs, wireless environmental monitors, and asset tracking beacons requiring stable component supply and long-term manufacturability.
Supply support for MSP430FR5735IRHAT 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, embedded processing, and connectivity solutions with emphasis on reliability, power efficiency, and system-level integration.
The MSP430FR57xx family was designed specifically for ultra-low-power sensing and system management in building automation, smart grid infrastructure, and industrial IoT endpoints where FRAM endurance and sub-µA sleep modes are essential.
FAQ
What is the maximum operating frequency of the MSP430FR5735IRHAT?
The MSP430FR5735IRHAT supports a maximum system clock frequency of 8 MHz, achieved using the factory-trimmed DCO or external HFXT crystal. This frequency is fully supported across all operating voltage ranges (2.0 V to 3.6 V) and temperature conditions (–40°C to 85°C), enabling deterministic real-time execution for time-critical sensor sampling and control loops in the MSP430FR5735IRHAT.
Does the MSP430FR5735IRHAT include a hardware real-time clock with calendar function?
Yes, the MSP430FR5735IRHAT integrates the RTC_B module with full calendar support (year/month/day/hour/minute/second), alarm capability, and dedicated 32-kHz crystal oscillator circuitry. It operates in LPM3.5 mode at 1.5 µA typical current, allowing precise timekeeping and scheduled wake-up events without CPU intervention - a core capability confirmed in the MSP430FR5735IRHAT datasheet Section 1.1 and functional block diagram.
How many analog-to-digital converter channels does the MSP430FR5735IRHAT support?
The MSP430FR5735IRHAT features the ADC10_B module with 12 external analog input channels (A0–A11) and 2 internal channels (temperature sensor and VCC/2 reference), totaling 14 configurable inputs. This matches the specification for the FR5735 variant in Table 3-1 of the SLASE35C datasheet and is implemented in the RHA package with dedicated pins P1.0–P1.5, P3.0–P3.3, and internal routing - confirmed for the exact MSP430FR5735IRHAT part number.
What package type and pin count does the MSP430FR5735IRHAT use?
The MSP430FR5735IRHAT is packaged in a 40-pin VQFN (RHA) with 6 mm × 6 mm body size and 0.5-mm pitch. This package includes an exposed thermal pad recommended for connection to DVSS, and supports all 32 GPIO functions documented in the pin diagram for RHA-packaged FR572x/FR573x devices - consistent across TI's official ordering information and mechanical drawings for MSP430FR5735IRHAT.
Is the MSP430FR5735IRHAT pin-compatible with other devices in the MSP430FR57xx family?
Yes, the MSP430FR5735IRHAT shares identical pinout, package dimensions, and signal mapping with other RHA-packaged members including MSP430FR5729IRHAT, MSP430FR5739IRHAT, and MSP430FR5725IRHAT. All use the same 40-pin VQFN layout with functionally equivalent terminal assignments (e.g., P1.x, PJ.x, XIN/XOUT, RST), enabling direct substitution within the same hardware design - verified in Figures 4-1 and Table 4-1 of the SLASE35C datasheet.
MSP430FR5735IRHAT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 40-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:
- 24MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 32
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 14x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR5735IRHAT FAQ
1.How can I place an order for MSP430FR5735IRHAT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5735IRHAT 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 MSP430FR5735IRHAT reliable?
The price and inventory of MSP430FR5735IRHAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5735IRHAT is usually 5 days.
3.What payment methods are accepted for MSP430FR5735IRHAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5735IRHAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5735IRHAT?
MSP430FR5735IRHAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5735IRHAT 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 MSP430FR5735IRHAT?
For technical support, including MSP430FR5735IRHAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5735IRHAT requirements.
6.How does Aetrix verify that MSP430FR5735IRHAT is sourced from the original manufacturer or authorized distributors?
All MSP430FR5735IRHAT 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 MSP430FR5735IRHAT meets industry standards.
7.What is the process for return or replacement of MSP430FR5735IRHAT?
All MSP430FR5735IRHAT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5735IRHAT, 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 MSP430FR5735IRHAT part is unused and in its original packaging.
Return procedure for MSP430FR5735IRHAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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