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Texas Instruments MSP430FR5738IPWR
- Part No.:
- MSP430FR5738IPWR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430FR5738IPWR.pdf
- Description:
- IC MCU 16BIT 16KB FRAM 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,908
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Product details
Overview
MSP430FR5738IPWR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 16KB ferroelectric RAM (FRAM), 24-MHz CPU, 10-bit ADC with 6 external channels, 10-channel analog comparator, and dual eUSCI modules supporting UART/IrDA/SPI/I²C. It operates from 2 V to 3.6 V across –40°C to 85°C and targets battery-powered sensor nodes requiring nonvolatile memory endurance and sub-µA RTC operation.
For engineers reviewing the MSP430FR5738IPWR datasheet, MSP430FR5738IPWR pinout, MSP430FR5738IPWR application, or MSP430FR5738IPWR equivalent, key selection criteria include FRAM write endurance (10¹⁵ cycles), LPM3.5 RTC current (1.5 µA), TSSOP-28 package footprint, integrated hardware multiplier, and eUSCI_A0/eUSCI_B0 peripheral flexibility for low-power communication interfaces.
Technical Context
The MSP430FR5738IPWR implements a 16-bit RISC CPUXV2 core with seven low-power modes, including LPM4.5 (0.32 µA shutdown) and LPM3.5 with crystal-based RTC (1.5 µA). Its FRAM memory replaces both flash and SRAM, enabling simultaneous read/write, no erase-before-write, and immunity to write-cycle wear-out.
Peripherals include two independent eUSCI modules: eUSCI_A0 supports UART with auto-baud detection and IrDA encoding/decoding; eUSCI_B0 supports I²C with multi-slave addressing and SPI. The 10-bit ADC achieves 200 ksps at 100 µA, and the 10-channel comparator includes programmable hysteresis and internal voltage reference generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 24-MHz operation - enables deterministic real-time control with low code size and power |
| Nonvolatile Memory | 16KB FRAM - provides infinite write endurance, 125 ns/word write speed, and unified program/data/storage space |
| ADC Resolution & Channels | 10-bit, 6 external + 2 internal channels - supports direct sensor interfacing without external signal conditioning |
| Comparator Channels | 10-channel analog comparator with programmable hysteresis and internal reference - enables precision threshold detection and window monitoring |
| eUSCI Peripherals | eUSCI_A0 (UART/IrDA/SPI) + eUSCI_B0 (I²C/SPI) - delivers dual-protocol serial connectivity with hardware bootloading support |
| Low-Power Modes | LPM3.5 (RTC active, 1.5 µA) and LPM4.5 (shutdown, 0.32 µA) - extends battery life in always-on sensing applications |
| Supply Voltage Range | 2.0 V to 3.6 V - compatible with single-cell Li-ion, Li-SOCl₂, and two-cell alkaline battery systems |
Pinout & Package
TSSOP-28 (PW) package: 9.7 mm × 4.4 mm body, 0.65 mm pitch, exposed thermal pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO | Reset / Non-maskable interrupt / Spy-Bi-Wire debug input | Single-pin reset and 2-wire JTAG-compatible debugging interface - reduces PCB routing complexity |
| TEST/SBWTCK | Spy-Bi-Wire test clock | Enables in-system programming and debug without full JTAG header - ideal for space-constrained designs |
| P1.0/TA0.1/DMAE0/RTCCLK/A0*/CD0/VeREF- | Multi-function GPIO with timer capture, DMA trigger, RTC output, ADC input, comparator input, reference | Combines timing, sensing, and system management functions on one pin - simplifies peripheral resource allocation |
| P1.5/TB0.2/UCA0CLK/A5*/CD5 | GPIO / Timer_B capture / eUSCI_A0 SPI clock / ADC input / comparator input | Supports synchronous serial communication and analog acquisition on same pin - enables compact sensor interface design |
| PJ.4/XIN & PJ.5/XOUT | Crystal oscillator input/output | Supports 32-kHz LFXT for RTC accuracy or HFXT for high-speed system clock - selectable via software configuration |
Key Features
| Feature | Design Value |
|---|---|
| FRAM memory architecture | Eliminates erase cycles and write latency; enables logging at 125 ns/word with 10¹⁵ cycle endurance - critical for data recorders and firmware updates |
| Hardware multiplier (MPY32) | 32-bit integer multiply in single cycle - accelerates sensor fusion, filtering, and cryptographic operations without CPU overhead |
| Three-channel DMA | Offloads data movement from CPU during ADC sampling, UART transfers, or FRAM writes - preserves low-power mode residency |
| Real-Time Clock (RTC_B) | Calendar mode with alarm and calibration registers - provides time-stamped sensor events with <1 ppm drift using 32-kHz crystal |
| Integrated LDO and SVS | Fully integrated low-dropout regulator and supply voltage supervisor - removes need for external power management ICs |
Applications
| Smart Meter Sensor Node | Wireless Industrial Transmitter |
|---|---|
Use Scenario: Battery-powered utility meter collecting voltage, current, and temperature data every 15 seconds with timestamped storage. IC Role / Device Role / Timing Role: Main controller executing sensor acquisition, FRAM-based circular buffer logging, RTC-driven wake-up, and UART-to-LoRaWAN gateway handoff. Use Value: 1.5 µA LPM3.5 RTC current and 16KB FRAM enable >10-year battery life with 10¹⁵ write-cycle reliability for daily firmware updates and event logs. | Use Scenario: DIN-rail mounted pressure/temperature transmitter sending calibrated readings over RS-485 to PLC every 100 ms. IC Role / Device Role / Timing Role: Signal conditioner, ADC driver, digital filter engine, and RS-485 UART interface controller with precise 100-ms timing via Timer_A. Use Value: Integrated 10-bit ADC (200 ksps @ 100 µA) and eUSCI_A0 UART eliminate external signal chain components while maintaining <±1 LSB linearity. |
| Home Automation Hub Controller | Asset Tracking Beacon |
Use Scenario: Zigbee/Z-Wave hub aggregating motion, door/window, and ambient light sensor inputs and forwarding to cloud via Wi-Fi module. IC Role / Device Role / Timing Role: Low-power sensor aggregator with GPIO wake-up, comparator-based event detection, and SPI-controlled radio interface. Use Value: 10-channel comparator with programmable hysteresis enables zero-CPU wake-up on sensor thresholds; FRAM stores device state across brownouts. | Use Scenario: GPS-denied indoor asset tag reporting location via BLE beaconing and accelerometer-triggered motion alerts. IC Role / Device Role / Timing Role: Motion event detector (accelerometer interface), BLE subsystem coordinator, and nonvolatile configuration manager. Use Value: 0.32 µA LPM4.5 shutdown current and FRAM retention at -40°C to 85°C ensure multi-year shelf life and reliable cold-chain monitoring. |
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 |
|---|---|---|---|
| MSP430FR5739IPWR | 16KB FRAM, 12+2 ADC channels, 16-channel comparator, 32-pin RHA package - adds 6 more ADC inputs and 6 comparator inputs | Required for designs needing >6 external analog sensors or multi-zone threshold monitoring | Select when additional analog channel count justifies larger footprint and higher pin count |
| MSP430FR5969IPM | 64KB FRAM, 12+2 ADC channels, 16-channel comparator, 8-MHz DCO (not 24 MHz), enhanced LPM3.5 (0.9 µA) | Targeted at higher-memory firmware storage and deeper sleep, but lacks 24-MHz performance headroom | Prefer for firmware-over-the-air update storage or longer RTC-only battery life where 24-MHz throughput is not required |
Compared with MSP430FR5739IPWR and MSP430FR5969IPM, the MSP430FR5738IPWR delivers optimal balance of 24-MHz processing, 6-channel analog front-end, and TSSOP-28 compactness for cost-sensitive, space-constrained sensor nodes - without over-provisioning memory or I/O.
Availability
MSP430FR5738IPWR is available at Aetrix Electronics and suitable for smart metering, industrial sensor transmitters, home automation hubs, and asset tracking beacons requiring stable component supply and long-term production continuity.
Supply support for MSP430FR5738IPWR 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets.
The MSP430FR57xx family was designed specifically for ultra-low-power sensing and system management in building automation, smart grid infrastructure, and industrial IoT edge nodes - prioritizing FRAM endurance, sub-µA RTC operation, and integrated analog peripherals.
FAQ
What is the maximum operating frequency of the MSP430FR5738IPWR?
The MSP430FR5738IPWR supports a maximum system clock frequency of 24 MHz via its factory-trimmed DCO oscillator. This allows deterministic real-time execution of sensor fusion algorithms and communication stack processing while maintaining ultra-low active-mode current (81.4 µA/MHz typical). The device also supports lower-frequency sources including VLO (12 kHz), 32-kHz crystals, and external HFXT for flexible clock tree design.
Does the MSP430FR5738IPWR include hardware encryption or secure boot features?
No, the MSP430FR5738IPWR does not include dedicated hardware encryption engines, secure boot ROM, or cryptographic accelerators. Its security model relies on software-based implementations and the Memory Protection Unit (MPU) to restrict code/data access. For applications requiring AES, SHA, or secure key storage, TI recommends the MSP430FR59xx or MSP432P4xx families - the MSP430FR5738IPWR focuses on ultra-low-power analog integration and FRAM reliability instead.
How many I²C interfaces does the MSP430FR5738IPWR support?
The MSP430FR5738IPWR supports one hardware I²C interface via eUSCI_B0. This module provides standard-mode (100 kbps) and fast-mode (400 kbps) I²C operation with multi-slave addressing capability, automatic clock stretching, and 7-bit/10-bit address support. It cannot simultaneously operate as both master and slave, and no second I²C peripheral is available - designs requiring dual I²C buses must use bit-banged GPIO or external bridge ICs.
What is the FRAM endurance rating for the MSP430FR5738IPWR?
The MSP430FR5738IPWR features 16KB of embedded FRAM with a guaranteed endurance of 10¹⁵ write cycles per memory location - orders of magnitude higher than flash (10⁵) or EEPROM (10⁶). This enables continuous data logging, frequent firmware updates, and robust state preservation across power cycles without wear leveling or erase management overhead.
Can the MSP430FR5738IPWR operate from a single 1.8-V supply?
No, the MSP430FR5738IPWR requires a minimum supply voltage of 2.0 V per its absolute maximum ratings and recommended operating conditions. Operation below 2.0 V may result in undefined behavior, FRAM write failure, or loss of RTC functionality. For 1.8-V systems, TI recommends the MSP430FR2355 or MSP430FR2476, which are explicitly rated down to 1.8 V and retain FRAM benefits in lower-voltage domains.
MSP430FR5738IPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- 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:
- 21
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 10x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR5738IPWR FAQ
1.How can I place an order for MSP430FR5738IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5738IPWR 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 MSP430FR5738IPWR reliable?
The price and inventory of MSP430FR5738IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5738IPWR is usually 5 days.
3.What payment methods are accepted for MSP430FR5738IPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5738IPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5738IPWR?
MSP430FR5738IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5738IPWR 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 MSP430FR5738IPWR?
For technical support, including MSP430FR5738IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5738IPWR requirements.
6.How does Aetrix verify that MSP430FR5738IPWR is sourced from the original manufacturer or authorized distributors?
All MSP430FR5738IPWR 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 MSP430FR5738IPWR meets industry standards.
7.What is the process for return or replacement of MSP430FR5738IPWR?
All MSP430FR5738IPWR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5738IPWR, 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 MSP430FR5738IPWR part is unused and in its original packaging.
Return procedure for MSP430FR5738IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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