My Inquiry
My Account
Texas Instruments MSP430FR5733IRHAR
- Part No.:
- MSP430FR5733IRHAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR5733IRHAR.pdf
- Description:
- IC MCU 16BIT 8KB FRAM 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,890
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430FR5733IRHAR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 8KB FRAM nonvolatile memory, 1KB RAM, and a 24-MHz CPU. It integrates a 10-bit ADC with 12 external channels, a 16-channel analog comparator, dual eUSCI modules (UART/IrDA/SPI/I²C), RTC, five 16-bit timers, and hardware multiplier. It targets battery-powered sensor nodes and data acquisition systems requiring long runtime and reliable nonvolatile storage.
For engineers reviewing the MSP430FR5733IRHAR datasheet, MSP430FR5733IRHAR pinout, MSP430FR5733IRHAR application, or MSP430FR5733IRHAR equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), LPM3.5 RTC current (1.5 µA), 40-pin VQFN package compatibility, and support for I²C master/slave and UART bootloader functionality.
Technical Context
The MSP430FR5733IRHAR implements the MSP430xV2 CPU core with unified memory architecture where FRAM serves as program, data, and storage space-eliminating separate flash/EEPROM partitions. Its power management includes seven low-power modes, with LPM4.5 consuming only 0.32 µA and LPM3.5 (RTC + 32-kHz crystal) drawing 1.5 µA.
Peripherals are tightly coupled to the DMA controller and clock system: eUSCI_A0/A1 support UART auto-baud detection and IrDA encoding; eUSCI_B0 supports I²C multi-slave addressing and SPI; the 10-bit ADC achieves 200 ksps at 100 µA; and the 16-channel comparator includes programmable hysteresis and internal voltage reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU (MSP430xV2) with 24-MHz max clock - enables deterministic real-time control and low-latency interrupt response. |
| Nonvolatile Memory | 8KB FRAM - provides true EEPROM-like write endurance (10¹⁵ cycles), 125-ns word writes, and no erase-before-write overhead. |
| RAM | 1KB SRAM - sufficient for stack, buffers, and real-time variables in compact embedded firmware. |
| ADC | 10-bit SAR ADC with 12 external + 2 internal channels, 200 ksps sampling - supports high-speed sensor polling without oversampling penalty. |
| Low-Power Modes | LPM3.5 (RTC + crystal): 1.5 µA; LPM4.5 (shutdown): 0.32 µA - extends coin-cell battery life to years in periodic wake-up applications. |
| Communication | eUSCI_A0/A1 (UART/IrDA/SPI); eUSCI_B0 (I²C/SPI); hardware UART BSL - enables field firmware updates and multi-protocol sensor interfacing. |
| Supply Range | 2.0 V to 3.6 V - compatible with single Li-ion, two alkaline, or regulated 3.3-V rails without level-shifting. |
Pinout & Package
Package: 40-pin VQFN (RHA), 6 mm × 6 mm body, exposed thermal pad (recommended connection 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, TA0 capture input, ADC channel A0, comparator CD0, and negative reference input - enables timekeeping + analog sensing on one pin. |
| P1.1/TA0.2/TA1CLK/CDOUT/A1*/CD1/VeREF+ | Multi-function I/O | ADC channel A1 input, comparator output, positive reference input, and timer clock source - supports precision analog front-end design. |
| PJ.4/XIN & PJ.5/XOUT | Clock Input/Output | Connects to 32-kHz crystal for RTC operation - required for sub-µA LPM3.5 mode and calendar-based wake-up scheduling. |
| RST/NMI/SBWTDIO | Reset & Debug | Single-wire JTAG (Spy-Bi-Wire) debug interface and non-maskable interrupt - enables in-system programming and crash diagnostics without dedicated JTAG header. |
| VCORE | Core Power | Internal LDO output for CPU and digital logic - decoupling required per datasheet to maintain stable 1.8-V core voltage under dynamic load. |
Key Features
| Feature | Design Value |
|---|---|
| FRAM Memory Architecture | Unified 8KB nonvolatile memory eliminates flash erase latency and wear leveling complexity - simplifies firmware logging and parameter storage. |
| Real-Time Clock (RTC) | Calendar mode with alarm and 32-kHz crystal support - enables precise time-stamped sensor data capture and scheduled wake-up without external RTC IC. |
| Hardware Multiplier (MPY32) | 32-bit integer multiply in single cycle - accelerates signal processing (e.g., FIR filtering, RMS calculation) in low-power sensor fusion algorithms. |
| Three-Channel DMA | Automates data movement between ADC, FRAM, and peripherals - reduces CPU load and active-mode current during burst sampling. |
| Comparator_D with Hysteresis | 16-channel analog comparator with programmable hysteresis and internal reference - replaces external comparators in threshold-detection circuits (e.g., battery monitoring, intrusion sensing). |
Applications
| Smart Meter Sensor Node | Wireless Building Automation Controller |
|---|---|
Use Scenario: Battery-powered utility meter collecting voltage/current/temperature at 10-second intervals and transmitting via sub-GHz RF every 15 minutes. IC Role / Device Role / Timing Role: Main MCU managing ADC sampling, RTC-triggered wake-up, FRAM-based data buffering, and SPI-controlled RF transceiver. Use Value: 1.5 µA LPM3.5 current extends 2000-mAh Li-SOCl₂ battery life beyond 10 years; FRAM enables lossless logging during brownouts. | Use Scenario: Occupancy-sensing node using PIR and ambient light sensors to control HVAC and lighting in commercial offices. IC Role / Device Role / Timing Role: Central sensor aggregator with I²C-connected environmental sensors, UART-linked wireless module, and RTC-scheduled sleep/wake cycles. Use Value: Dual eUSCI modules allow concurrent I²C sensor reads and UART telemetry transmission; 8KB FRAM stores 72 hours of sensor history locally. |
| Industrial Data Logger | Portable Medical Diagnostic Device |
Use Scenario: Handheld device recording thermocouple and pressure readings during equipment maintenance, with USB export capability. IC Role / Device Role / Timing Role: Host controller interfacing 10-bit ADC, FRAM storage, and USB-to-UART bridge; uses TA0/TA1 for precise timestamping. Use Value: 200 ksps ADC supports fast transient capture; FRAM's 125-ns writes prevent data loss during rapid sampling bursts. | Use Scenario: Portable pulse oximeter acquiring analog photodiode signals, computing SpO₂, and storing session history. IC Role / Device Role / Timing Role: Signal processor running real-time LED drive timing, ADC sampling, and digital filtering; uses comparator for LED current regulation feedback. Use Value: Comparator_D with programmable hysteresis stabilizes LED driver loop; 1KB RAM accommodates FFT-based saturation algorithm buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR5735IRHAR | 16KB FRAM, same 40-pin RHA package, identical peripheral set - differs only in FRAM size and ADC channel count (12 ext/2 int vs. MSP430FR5733IRHAR's no ADC). | Required when firmware image size exceeds 8KB or persistent data logging volume demands >8KB nonvolatile storage. | Select MSP430FR5735IRHAR if future firmware expansion or extended data retention is anticipated; pin-compatible upgrade path. |
| MSP430FR5969IPZ | 64-pin LQFP, 64KB FRAM, integrated AES accelerator, higher GPIO count - not pin-compatible; requires PCB redesign. | Suitable for next-generation designs needing cryptographic security, larger memory footprint, or more analog/digital I/O resources. | Choose MSP430FR5969IPZ for new designs requiring secure boot, larger code space, or enhanced analog integration - not a drop-in replacement. |
Compared with MSP430FR5735IRHAR, the MSP430FR5733IRHAR offers identical low-power performance and peripheral functionality in a cost-optimized 8KB FRAM configuration; versus MSP430FR5969IPZ, it provides proven reliability in space-constrained 40-pin layouts but lacks hardware crypto and expanded I/O.
Availability
MSP430FR5733IRHAR is available at Aetrix Electronics and suitable for smart metering, industrial data logging, building automation, and portable medical devices requiring stable component supply across multi-year production cycles.
Supply support for MSP430FR5733IRHAR 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 for industrial, automotive, and consumer markets.
The MSP430FR57xx family was designed specifically for ultra-low-power sensing and system management in energy-constrained environments such as battery-operated IoT endpoints and portable instrumentation.
FAQ
What is the maximum operating frequency of the MSP430FR5733IRHAR?
The MSP430FR5733IRHAR supports a maximum system clock frequency of 24 MHz, achieved via its digitally controlled oscillator (DCO) with six factory-trimmed frequencies. This allows deterministic real-time execution while maintaining ultra-low power consumption in active mode (81.4 µA/MHz typical).
Does the MSP430FR5733IRHAR include an analog-to-digital converter (ADC)?
No, the MSP430FR5733IRHAR does not include an ADC. Per the device comparison table in SLAS639L, MSP430FR5733 variants are designated as having "–" under the ADC10_B column, confirming absence of the 10-bit ADC module present in MSP430FR5735/FR5739 variants.
What package type and pin count does the MSP430FR5733IRHAR use?
The MSP430FR5733IRHAR uses a 40-pin VQFN package (RHA variant), measuring 6 mm × 6 mm with an exposed thermal pad. This package is shared across MSP430FR5731/FR5733/FR5735/FR5737/FR5739 devices and supports full peripheral access including all I/O ports, eUSCI modules, and RTC crystal connections.
How much FRAM and RAM does the MSP430FR5733IRHAR integrate?
The MSP430FR5733IRHAR integrates 8KB of ferroelectric RAM (FRAM) for nonvolatile program and data storage, and 1KB of volatile SRAM for runtime variables and stack operations. FRAM provides 10¹⁵ write-cycle endurance and 125-ns write speed - eliminating flash erase delays and wear-out concerns.
Can the MSP430FR5733IRHAR operate from a 1.8-V supply?
No, the MSP430FR5733IRHAR requires a minimum supply voltage of 2.0 V per its recommended operating conditions. Operation below 2.0 V risks functional failure, especially in active and LPM3 modes; the internal LDO regulates VCORE to 1.8 V but depends on ≥2.0 V at DVCC/DVSS inputs.
MSP430FR5733IRHAR 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR5733IRHAR FAQ
1.How can I place an order for MSP430FR5733IRHAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5733IRHAR 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 MSP430FR5733IRHAR reliable?
The price and inventory of MSP430FR5733IRHAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5733IRHAR is usually 5 days.
3.What payment methods are accepted for MSP430FR5733IRHAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5733IRHAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5733IRHAR?
MSP430FR5733IRHAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5733IRHAR 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 MSP430FR5733IRHAR?
For technical support, including MSP430FR5733IRHAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5733IRHAR requirements.
6.How does Aetrix verify that MSP430FR5733IRHAR is sourced from the original manufacturer or authorized distributors?
All MSP430FR5733IRHAR 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 MSP430FR5733IRHAR meets industry standards.
7.What is the process for return or replacement of MSP430FR5733IRHAR?
All MSP430FR5733IRHAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5733IRHAR, 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 MSP430FR5733IRHAR part is unused and in its original packaging.
Return procedure for MSP430FR5733IRHAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430FR5733IRHAR Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
