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Texas Instruments MSP430F5237IRGCR
- Part No.:
- MSP430F5237IRGCR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430F5237IRGCR.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,880
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Product details
Overview
MSP430F5237IRGCR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 64 KB flash, 8 KB RAM, four 16-bit timers (TA0/TA1/TA2/TB0), two USCI modules (UART/IrDA/SPI/I²C), RTC, hardware multiplier, DMA, and comparator-designed for battery-powered sensor nodes and data loggers operating at 1.8–3.6 V.
For engineers reviewing the MSP430F5237IRGCR datasheet, MSP430F5237IRGCR pinout, MSP430F5237IRGCR application, or MSP430F5237IRGCR equivalent, key selection criteria include standby current (1.9 µA in LPM3), wake-up time (3.5 µs), 64-pin VQFN package compatibility, absence of integrated ADC, and peripheral set alignment with legacy MSP430F5xx firmware.
Technical Context
The MSP430F5237IRGCR implements a unified clock system with FLL stabilization, dual crystal support (XT1 for 32-kHz RTC, XT2 up to 32 MHz), and three internal sources (VLO, REFO, DCO). Its power management includes programmable LDO core regulation and brownout detection with hysteresis.
It executes code from flash or RAM with active-mode current scaling at 290 µA/MHz (flash) and 150 µA/MHz (RAM) at 8 MHz/3.0 V. Standby (LPM3) retains full RAM while running RTC, watchdog, and supply supervisor-critical for long-interval wake-up sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2 with constant generators and 25-MHz max system clock |
| Memory | 64 KB flash + 8 KB RAM; supports in-system programming without external voltage |
| Power Modes | LPM3 standby: 1.9 µA @ 3.0 V with RTC active; LPM4 shutdown: 1.1 µA with full RAM retention |
| Timers | TA0 (5 CC), TA1 (3 CC), TA2 (3 CC), TB0 (7 CC shadow registers); all support capture/compare/PWM |
| Communication | USCI_A0/A1: UART/IrDA/SPI; USCI_B0/B1: I²C/SPI; no hardware USB or CAN |
| Analog Peripherals | No integrated ADC; includes 8-channel Comparator_B with reference options and hysteresis control |
| Package | VQFN-64 (RGC), 9 mm × 9 mm, exposed thermal pad (to be connected to DVSS) |
Pinout & Package
VQFN-64 (RGC) package with 9 mm × 9 mm body size and exposed thermal pad requiring connection to DVSS per TI recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK | Primary clock input / auxiliary clock source | Accepts external 32-kHz crystal or digital clock; routes to ACLK domain for RTC and low-power peripherals |
| P2.6/RTCCLK/DMAE0 | RTC clock input / DMA trigger | Direct connection point for 32-kHz oscillator output; enables RTC alarm-triggered DMA transfers |
| P3.0–P3.4/UCB0SIMO–UCA0RXD | USCI0 serial interface pins | Configurable as SPI master/slave (UCB0) or UART/IrDA (UCA0); shared pins require software-controlled mode selection |
| P4.0–P4.5/PM_UCA1/UCB1 | USCI1 peripheral mapping pins | Secondary USCI block supporting identical protocols; pin multiplexing managed via port mapping controller (PMAP) |
| RST/NMI | Reset and non-maskable interrupt | Dual-function pin: active-low reset assertion or rising-edge NMI trigger; internal pullup enabled by default |
| TEST/SBWTCK & PJ.x | Spy-Bi-Wire debug interface | 4-pin SBW (PJ.0–PJ.3 + TEST) enables full JTAG-equivalent debugging with single-wire clock and bidirectional data |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low standby current | 1.9 µA in LPM3 with RTC, watchdog, and supply supervisor active-enables >10-year coin-cell operation in periodic-sense applications |
| Fast wake-up latency | 3.5 µs typical from LPM3 to active mode-minimizes energy loss during transient event response |
| Flexible clock system | FLL-stabilized DCO with selectable reference (XT1, REFO, VLO) allows dynamic frequency scaling across voltage and temperature |
| Hardware DMA engine | 3-channel DMA with auto-increment and block transfer modes reduces CPU load during sensor data acquisition and communication bursts |
| Port mapping controller | Software-reconfigurable pin assignment for USCI, timer, and comparator functions-enables PCB reuse across multiple F523x variants |
Applications
| Wireless Sensor Node | Industrial Data Logger |
|---|---|
Use Scenario: Battery-powered environmental monitor transmitting temperature/humidity via sub-GHz RF link every 5 minutes. IC Role / Device Role / Timing Role: Main controller managing sensor readout, RTC-based wake-up scheduling, low-power SPI to RF transceiver, and voltage monitoring. Use Value: LPM3 current of 1.9 µA extends CR2032 life beyond 7 years; 3.5 µs wake-up ensures rapid response to external interrupts (e.g., motion trigger). | Use Scenario: DIN-rail mounted vibration logger sampling accelerometer data at 1 kHz for 24 hours, then storing to SD card. IC Role / Device Role / Timing Role: Real-time data aggregator with precise timestamping (RTC_A), DMA-driven ADC interface (external), and SPI-to-SD controller. Use Value: Hardware multiplier accelerates FFT preprocessing; 64-pin RGC provides sufficient GPIO for SD card control lines and status LEDs. |
| Smart Meter Tamper Detection | Portable Medical Monitor |
Use Scenario: Electricity meter detecting case opening or magnetic tampering using reed switch and Hall sensor inputs. IC Role / Device Role / Timing Role: Low-power event processor with comparator-based analog threshold detection, RTC alarm for periodic self-test, and secure bootloader. Use Value: Comparator_B with internal reference eliminates need for external precision voltage divider; LPM4.5 shutdown (0.18 µA) preserves state during mains outage. | Use Scenario: Handheld pulse oximeter acquiring photodiode signals, computing SpO₂, and displaying results on OLED. IC Role / Device Role / Timing Role: Signal timing controller synchronizing LED drive pulses, ADC sampling windows, and display refresh via timer outputs. Use Value: Four independent 16-bit timers enable simultaneous PWM generation (LED drive), capture (photodiode edge timing), and RTC alarm (battery check every hour). |
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 |
|---|---|---|---|
| MSP430F5239IRGCR | Same package and pinout; differs only in flash size (128 KB vs. 64 KB) | Required when firmware exceeds 64 KB or future-proofing for feature expansion is needed | Select MSP430F5239IRGCR if code growth headroom or field-upgrade capability is critical |
| MSP430F5232IRGZ | 48-pin RGZ package (7×7 mm); same memory and peripherals but fewer I/O (37 vs. 53) and no P7.x or P6.6/P6.7 | Suitable for space-constrained designs where full 64-pin I/O count is unnecessary | Choose MSP430F5232IRGZ for compact PCB layouts accepting reduced GPIO and timer channel availability |
Compared with MSP430F5239IRGCR, the MSP430F5237IRGCR trades flash capacity for cost and density; versus MSP430F5232IRGZ, it delivers 16 additional I/O pins and full P7 port support-essential for multi-sensor interfaces or expanded communication buses.
Availability
MSP430F5237IRGCR is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial data loggers, smart meter tamper detection, and portable medical monitors requiring stable component supply and long-term lifecycle assurance.
Supply support for MSP430F5237IRGCR 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 delivering analog, embedded processing, and connectivity solutions with leadership in low-power design and industrial-grade reliability.
The MSP430F523x series targets ultra-low-power sensing and measurement applications, emphasizing extended battery life, fast wake-up, and robust peripheral integration without integrated ADC-differentiating it from the ADC-equipped F524x family.
FAQ
Does the MSP430F5237IRGCR include an integrated analog-to-digital converter (ADC)?
No, the MSP430F5237IRGCR does not include an integrated ADC. It belongs to the MSP430F523x series, which omits the 10-bit ADC10_A module present in the F524x series. Designers must use external ADCs or rely on its 8-channel Comparator_B for threshold-based analog monitoring. This omission reduces die size and power consumption, aligning with applications where discrete analog front-ends are preferred.
What is the maximum operating frequency and supported clock sources for the MSP430F5237IRGCR?
The MSP430F5237IRGCR supports a maximum system clock of 25 MHz. Valid clock sources include the internal digitally controlled oscillator (DCO), low-frequency VLO (10 kHz), trimmed REFO (32.768 kHz), 32-kHz watch crystal (XT1), and high-frequency crystals up to 32 MHz (XT2). The FLL automatically stabilizes the DCO against any selected reference, enabling precise frequency synthesis across voltage and temperature variations.
How many general-purpose I/O pins does the MSP430F5237IRGCR provide in the RGC package?
The MSP430F5237IRGCR in the 64-pin VQFN (RGC) package provides 53 usable general-purpose I/O pins. This includes P1.x (8), P2.x (8), P3.x (5), P4.x (8), P5.x (6), P6.x (8), P7.x (6), and PJ.x (4), with dedicated pins like RST/NMI, TEST, and power terminals excluded from the count. All I/O support configurable drive strength, Schmitt-trigger inputs, and interrupt capability.
What debug interface does the MSP430F5237IRGCR support, and what pins are required?
The MSP430F5237IRGCR supports the Spy-Bi-Wire (SBW) debug interface, requiring four pins: TEST/SBWTCK (pin 59), PJ.0/TDO (pin 60), PJ.1/TDI/TCLK (pin 61), PJ.2/TMS (pin 62), and PJ.3/TCK (pin 63). Though labeled as 4-pin, PJ.3 serves as TCK in SBW mode, making it functionally compatible with standard MSP-FET and LaunchPad debug probes without requiring full 4-wire JTAG.
Is the MSP430F5237IRGCR pin-compatible with other devices in the MSP430F523x family?
Yes, the MSP430F5237IRGCR is pin-compatible with MSP430F5239IRGCR (same 64-pin RGC package), sharing identical pinout, electrical characteristics, and peripheral mapping. It is not pin-compatible with RGZ-package variants (e.g., MSP430F5232IRGZ) due to differing pin counts and assignments. Firmware developed for MSP430F5237IRGCR runs unmodified on MSP430F5239IRGCR, subject to flash size constraints.
MSP430F5237IRGCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- MSP430F5xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- I2C, IrDA, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 53
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F5237IRGCR FAQ
1.How can I place an order for MSP430F5237IRGCR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F5237IRGCR 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 MSP430F5237IRGCR reliable?
The price and inventory of MSP430F5237IRGCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F5237IRGCR is usually 5 days.
3.What payment methods are accepted for MSP430F5237IRGCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F5237IRGCR transactions.
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4.How is shipping managed for MSP430F5237IRGCR?
MSP430F5237IRGCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F5237IRGCR 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 MSP430F5237IRGCR?
For technical support, including MSP430F5237IRGCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F5237IRGCR requirements.
6.How does Aetrix verify that MSP430F5237IRGCR is sourced from the original manufacturer or authorized distributors?
All MSP430F5237IRGCR 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 MSP430F5237IRGCR meets industry standards.
7.What is the process for return or replacement of MSP430F5237IRGCR?
All MSP430F5237IRGCR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F5237IRGCR, 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 MSP430F5237IRGCR part is unused and in its original packaging.
Return procedure for MSP430F5237IRGCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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