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Texas Instruments MSP430F5437IPN
- Part No.:
- MSP430F5437IPN
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MSP430F5437IPN.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:306
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Product details
Overview
MSP430F5437IPN from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 256 KB Flash, 16 KB RAM, 67 GPIOs, 12-bit ADC (14 external + 2 internal channels), and three 16-bit timers (TA0/TA1/TB0). It operates from 2.2 V to 3.6 V and supports real-time clock (RTC) with crystal, making it suitable for battery-powered sensor systems and digital timers.
For engineers reviewing the MSP430F5437IPN datasheet, MSP430F5437IPN pinout, MSP430F5437IPN application, or MSP430F5437IPN equivalent, key selection criteria include its 80-pin LQFP package, dual USCI_A/B interfaces (UART/I²C/SPI), low-power modes (1.69 µA in LPM4), and integrated hardware multiplier for efficient signal processing in embedded measurement applications.
Technical Context
The MSP430F5437IPN implements a unified clock system (UCS) with FLL stabilization, VLO/REFO internal oscillators, and support for 32-kHz and up to 32-MHz crystals. Its CPUXV2 core executes instructions at up to 18 MHz with constant generators for optimized code density.
It integrates a 3-channel DMA controller, enhanced UART with automatic baud-rate detection, I²C master/slave capability, and RTC_A module with alarm functionality - all operating under five configurable low-power modes (LPM0–LPM4) with sub-5-µs wake-up from standby.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2 with extended memory addressing and constant generators for high code efficiency |
| Flash / RAM | 256 KB Flash (in-system programmable, no external voltage required) and 16 KB SRAM with full retention in LPM3/LPM4 |
| ADC12_A | 12-bit SAR ADC with 200 ksps sampling rate, autoscan, 14 external + 2 internal analog inputs, and built-in reference |
| Timers | Three independent 16-bit timers: TA0 (5 CC registers), TA1 (3 CC registers), TB0 (7 CC shadow registers) |
| USCI Interfaces | Two USCI_A modules (UART/IrDA/SPI) and two USCI_B modules (I²C/SPI), each configurable per channel |
| Power Modes | Active Mode (312 µA/MHz @ 8 MHz), LPM3 (2.6 µA w/ RTC), LPM4 (1.69 µA), wake-up < 5 µs |
| Package | LQFP-80 (12 mm × 12 mm), 67 usable I/O pins, pin-compatible with MSP430F5435IPN and MSP430F5418IPN |
Pinout & Package
LQFP-80 package (12 mm × 12 mm), thermally enhanced with exposed thermal pad; 67 general-purpose I/O pins, 3 dedicated power/ground pairs (DVCC/DVSS), AVCC/AVSS, and VCORE (internal core regulator output, no external loading).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK | Timer & Clock I/O | Configurable as TA0 clock input or ACLK output (divided by 1–32); enables precise timing synchronization |
| P2.7/ADC12CLK/DMAE0 | ADC & DMA Control | Provides conversion clock to ADC12_A or triggers DMA transfer on external event |
| P3.5/UCA0RXD/UCA0SOMI | USCI_A0 Serial I/O | Receives UART data or acts as SPI slave out/master in; supports hardware flow control |
| P4.7/TB0CLK/SMCLK | Timer & System Clock | Serves as TB0 clock source or SMCLK output for peripheral synchronization |
| P7.0/XIN & P7.1/XOUT | XT1 Crystal Interface | Connects to 32-kHz watch crystal for RTC operation with low-power oscillator circuitry |
| RST/NMI/SBWTDIO | Reset & Debug | Multi-function pin for device reset, non-maskable interrupt, and Spy-Bi-Wire debug I/O |
Key Features
| Feature | Design Value |
|---|---|
| Fully Integrated LDO | Programmable core voltage regulation eliminates need for external DC/DC converter in battery-powered designs |
| Real-Time Clock (RTC_A) | Hardware RTC with calendar mode, alarms, and battery-backup capability using 32-kHz crystal |
| Hardware Multiplier (MPY32) | 32-bit multiplication in single cycle; accelerates filtering, FFT, and sensor fusion algorithms |
| Unified Clock System (UCS) | Automatic FLL lock to DCO, seamless switching between VLO/REFO/XT1/XT2 sources without software intervention |
| Enhanced UART | Automatic baud-rate detection enables robust communication over noisy lines without pre-negotiation |
Applications
| Analog Sensor Systems | Digital Motor Control |
|---|---|
Use Scenario: Battery-operated environmental monitor measuring temperature, humidity, and pressure via analog sensors. IC Role / Device Role / Timing Role: MSP430F5437IPN serves as main controller with integrated 12-bit ADC, RTC for timestamping, and low-power sleep/wake cycles. Use Value: 1.69 µA LPM4 current extends battery life to multi-year operation; autoscan ADC reduces firmware overhead for multi-channel acquisition. | Use Scenario: Closed-loop BLDC motor controller in portable power tools requiring precise PWM timing and current sensing. IC Role / Device Role / Timing Role: MSP430F5437IPN executes commutation logic using TB0's 7 capture/compare registers and TA0/TA1 for auxiliary timing. Use Value: Sub-5-µs wake-up from LPM3 ensures responsive fault handling; hardware multiplier accelerates PI control calculations. |
| Remote Controls | Hand-Held Meters |
Use Scenario: IR-based universal remote with button matrix, LED feedback, and low-battery detection. IC Role / Device Role / Timing Role: MSP430F5437IPN manages IR encoding (USCI_A0 IrDA), keypad scanning, and supply monitoring via SVS. Use Value: Ultra-low active and standby currents enable >1-year operation on coin cell; integrated LDO simplifies power design. | Use Scenario: Portable multimeter acquiring voltage, current, and resistance with auto-ranging and display update. IC Role / Device Role / Timing Role: MSP430F5437IPN performs analog front-end conditioning, digitization, calculation, and LCD driving via GPIO. Use Value: 12-bit ADC with internal reference eliminates external precision references; 67 GPIOs support direct segment drive and button interface. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F5435IPN | 192 KB Flash, same 16 KB RAM, identical pinout and peripheral set (2 USCI_A, 2 USCI_B, TA0/TA1/TB0, ADC12_A) | Lower Flash capacity limits firmware complexity; otherwise drop-in replacement for cost-sensitive designs | Select when application firmware fits within 192 KB and BOM cost optimization is prioritized |
| MSP430F5418IPN | 128 KB Flash, same 16 KB RAM, identical pinout and peripherals except reduced USCI count (1 USCI_A, 1 USCI_B) | Fewer serial interfaces constrain multi-protocol connectivity; suitable for simpler I/O-limited systems | Choose for basic sensor nodes where only one UART and one I²C bus are required |
Compared with MSP430F5435IPN and MSP430F5418IPN, the MSP430F5437IPN provides maximum Flash headroom (256 KB) and full dual-USCI_A/B capability - critical for field-upgradable firmware and concurrent wired communication protocols in industrial edge devices.
Availability
MSP430F5437IPN is available at Aetrix Electronics and suitable for analog sensor systems, digital motor control, and hand-held meters requiring stable component supply and long-term industrial availability.
Supply support for MSP430F5437IPN 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 specializing in analog, embedded processing, and connectivity technologies with leadership in ultra-low-power design.
The MSP430F5437IPN belongs to the MSP430F5xx mixed-signal microcontroller family, engineered for extended battery life in portable measurement and sensing applications through aggressive power-mode optimization and integrated analog peripherals.
FAQ
What is the maximum operating frequency of the MSP430F5437IPN?
The MSP430F5437IPN supports a maximum system clock frequency of 18 MHz, achieved via its digitally controlled oscillator (DCO) stabilized by the FLL loop in the Unified Clock System. This allows real-time execution of time-critical tasks such as motor commutation or high-speed ADC sampling while maintaining ultra-low power consumption in active mode.
Does the MSP430F5437IPN support hardware real-time clock (RTC) functionality?
Yes, the MSP430F5437IPN includes the RTC_A module with calendar mode, alarm interrupts, and battery-backed operation when paired with a 32-kHz crystal on P7.0/XIN and P7.1/XOUT. It retains timekeeping during LPM3 and LPM4 modes, drawing only 2.6 µA typical - enabling accurate timestamping in energy-constrained sensor nodes.
How many analog input channels does the MSP430F5437IPN ADC support?
The MSP430F5437IPN integrates the ADC12_A module with 14 external analog input channels (A0–A15, excluding A10/A11) and 2 internal channels (temperature sensor and VREF+/VeREF+), totaling 16 selectable inputs. The autoscan feature allows sequential conversion without CPU intervention, reducing firmware overhead in multi-sensor systems.
Is the MSP430F5437IPN pin-compatible with other devices in the MSP430F54xx family?
Yes, the MSP430F5437IPN in the 80-pin LQFP (PN) package shares identical pinout with MSP430F5435IPN and MSP430F5418IPN, as confirmed in Figure 4-2 of the SLAS612F datasheet. This enables footprint reuse across variants differing only in Flash size and USCI count.
What debug interface does the MSP430F5437IPN use?
The MSP430F5437IPN supports Spy-Bi-Wire (SBW) debugging via the RST/NMI/SBWTDIO and TEST/SBWTCK pins, requiring only two wires for full JTAG-equivalent functionality. This minimizes PCB routing complexity and preserves I/O resources in space-constrained designs.
MSP430F5437IPN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-LQFP
- Series:
- MSP430F5xx
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 18MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 67
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.2V ~ 3.6V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F5437IPN FAQ
1.How can I place an order for MSP430F5437IPN through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F5437IPN 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 MSP430F5437IPN reliable?
The price and inventory of MSP430F5437IPN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F5437IPN is usually 5 days.
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MSP430F5437IPN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F5437IPN 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 MSP430F5437IPN?
For technical support, including MSP430F5437IPN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F5437IPN requirements.
6.How does Aetrix verify that MSP430F5437IPN is sourced from the original manufacturer or authorized distributors?
All MSP430F5437IPN 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 MSP430F5437IPN meets industry standards.
7.What is the process for return or replacement of MSP430F5437IPN?
All MSP430F5437IPN units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F5437IPN, 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 MSP430F5437IPN part is unused and in its original packaging.
Return procedure for MSP430F5437IPN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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