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Texas Instruments MSP430F5237IZQER
- Part No.:
- MSP430F5237IZQER
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-VFBGA
- Datasheet:
-
MSP430F5237IZQER.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 80BGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430F5237IZQER 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 MSP430F5237IZQER datasheet, MSP430F5237IZQER pinout, MSP430F5237IZQER application, or MSP430F5237IZQER equivalent, key selection criteria include standby current (1.9 µA in LPM3), wake-up time (3.5 µs), absence of integrated ADC, and MicroStar Junior BGA-80 package compatibility with space-constrained embedded designs.
Technical Context
The MSP430F5237IZQER 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 an integrated LDO with programmable core voltage and brownout detection.
It features three-channel DMA, port mapping control for flexible peripheral routing, and interrupt-driven operation across all low-power modes. Unlike the F524x series, it omits the 10-bit ADC10_A module but retains identical timer, USCI, RTC, and comparator configurations as the F5239/F5247 family members in ZQE packages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2 with constant generators for high code efficiency |
| Flash / RAM | 64 KB flash (in-system programmable) + 8 KB SRAM with full retention in LPM3/LPM4 |
| Supply Range | 1.8 V to 3.6 V - enables direct Li-ion or coin-cell battery operation without external regulators |
| Standby Current (LPM3) | 1.9 µA at 3.0 V with RTC, watchdog, and supervisor active - supports multi-year battery life |
| Wake-up Time | 3.5 µs from LPM3 to active mode - meets real-time response requirements in sensor wake-on-event systems |
| Timers | Four 16-bit timers: TA0 (5 CC), TA1 (3 CC), TA2 (3 CC), TB0 (7 CC shadow registers) |
| USCI Interfaces | Two USCI modules: USCI_A0/A1 (UART/IrDA/SPI), USCI_B0/B1 (I²C/SPI) |
| Package | MicroStar Junior™ BGA-80 (5 mm × 5 mm, 0.5-mm pitch) - suitable for compact PCB layouts |
Pinout & Package
Package: MicroStar Junior™ BGA-80 (ZQE), 5 mm × 5 mm, 0.5-mm ball pitch, thermal pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK | Port 1 bit 0 / Timer A0 clock input / Auxiliary clock output | Configurable I/O supporting RTC clock source or timer synchronization |
| P2.6/RTCCLK/DMAE0 | Port 2 bit 6 / RTC clock input / DMA trigger enable | Direct connection point for external 32.768-kHz crystal or oscillator to RTC_A module |
| P3.0–P3.4 / UCB0SIMO/UCB0SOMI/UCB0CLK/UCA0STE/UCA0TXD | I²C data (SDA), I²C clock (SCL), SPI clock, UART control, UART TX | Shared pins enabling dual USCI operation - requires software-controlled port mapping |
| P5.4/XIN & P5.5/XOUT | XT1 oscillator input/output | Dedicated low-frequency crystal interface for RTC and low-power clock domain |
| P5.2/XT2IN & P5.3/XT2OUT | XT2 oscillator input/output | Supports high-frequency crystals up to 32 MHz for system clock generation |
| RST/NMI | Reset and non-maskable interrupt input | Active-low reset with NMI capability - used for emergency recovery or critical event handling |
| TEST/SBWTCK & PJ.0–PJ.3 | Spy-Bi-Wire debug interface (TCK/TMS/TDI/TDO) | 2-wire JTAG-compatible programming and debugging - reduces PCB footprint vs. 4-wire JTAG |
| RSTDVCC/SBWTDIO | Debug data I/O and regulated supply monitor | Combines SWD data line and supply supervision - enables secure debug access with voltage validation |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated LDO | Programmable core voltage regulation eliminates need for external DC/DC or LDO in most battery-powered designs |
| Port mapping control | Runtime reassignment of peripheral functions to GPIO pins - increases layout flexibility and simplifies board revision |
| Three-channel DMA | Offloads CPU during memory transfers (e.g., sensor data buffering), reducing active-mode duration and power consumption |
| Real-time clock with alarm | Hardware RTC with calendar mode and configurable alarms - enables precise time-stamped logging without CPU intervention |
| Ultra-fast wake-up (3.5 µs) | Minimizes latency in interrupt-driven sensor sampling - critical for duty-cycled wireless sensor networks |
| Supply voltage supervisor | Detects brownout conditions and triggers reset before logic corruption occurs - improves system reliability in unstable power environments |
Applications
| Wireless Sensor Node | Industrial Data Logger |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting via sub-GHz RF transceiver on scheduled intervals. IC Role / Device Role / Timing Role: Main controller managing sensor readout, RTC-triggered wake-up, SPI communication with RF IC, and low-power state transitions. Use Value: 1.9 µA LPM3 current extends 2×AA battery life beyond 5 years; 3.5 µs wake-up ensures timely response to external interrupts from motion or door sensors. | Use Scenario: DIN-rail mounted environmental monitor recording temperature, pressure, and voltage every 10 seconds with local SD card storage. IC Role / Device Role / Timing Role: Central timing and control unit coordinating ADC-less analog front-end (via external ADC), FAT32 file writes, and RTC-based timestamping. Use Value: Port mapping allows reuse of same PCB layout for variants with/without integrated ADC; 64 KB flash accommodates firmware + bootloader + logging buffer. |
| Smart Meter Interface Module | Portable Medical Diagnostic Device |
Use Scenario: Communication bridge between utility meter ASIC and PLC/HPLC modem, translating protocols and buffering data. IC Role / Device Role / Timing Role: Protocol converter and data router using dual USCI modules (I²C to meter, UART to modem) with DMA-assisted transfers. Use Value: Dual USCI support enables simultaneous I²C master and UART host operation; LDO regulation ensures stable core voltage despite fluctuating meter supply rails. | Use Scenario: Handheld blood glucose meter with LCD, button interface, and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: System manager handling button debouncing, LCD refresh, BLE stack timing, and RTC-based session timeout. Use Value: MicroStar Junior BGA-80 enables compact form factor; 8 KB RAM supports BLE attribute database and measurement history without external memory. |
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 |
|---|---|---|---|
| MSP430F5239IZQER | Same package and peripherals, but with 128 KB flash and identical no-ADC configuration | Preferred when larger firmware image size or future feature expansion is required | Select for headroom in firmware growth or complex protocol stacks requiring >64 KB code space |
| MSP430F5247IZQER | Includes 10-bit ADC10_A (10 external + 2 internal channels), otherwise identical timer/USCI/RTC resources | Suitable when direct analog sensing (e.g., thermistor, battery voltage) is needed on-chip | Choose only if integrated ADC functionality is required - adds 0.5 µA typical active current overhead |
Compared with MSP430F5239IZQER, the MSP430F5237IZQER offers reduced flash capacity for cost-sensitive volume deployments; versus MSP430F5247IZQER, it removes ADC circuitry to lower dynamic power and simplify analog design, making it optimal for digital-only sensor aggregation.
Availability
MSP430F5237IZQER is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial data loggers, and smart meter interface modules requiring stable component supply and long-term lifecycle support.
Supply support for MSP430F5237IZQER 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 and embedded processing solutions for industrial, automotive, and personal electronics markets.
The MSP430F5237IZQER belongs to TI's MSP430F5xx ultra-low-power MCU family, designed specifically for extended-battery-life portable measurement and sensing applications where nanowatt-level standby power and sub-microsecond wake-up are critical.
FAQ
What is the maximum system clock frequency supported by the MSP430F5237IZQER?
The MSP430F5237IZQER supports a maximum system clock frequency of 25 MHz. This is achieved using the FLL-controlled DCO or by directly driving MCLK from XT2 (up to 32 MHz crystal), though the device's timing specifications are guaranteed up to 25 MHz. The 25-MHz limit ensures reliable operation of all peripherals including timers, USCI, and DMA under worst-case voltage and temperature conditions as specified in the SLAS897C datasheet.
Does the MSP430F5237IZQER include an analog-to-digital converter (ADC)?
No, the MSP430F5237IZQER does not include an integrated ADC. It belongs to the MSP430F523x series, which explicitly excludes the ADC10_A module present in the F524x series. This omission reduces active current and die area, making the MSP430F5237IZQER ideal for digital-only applications such as protocol bridging, RTC-based scheduling, or sensor interfacing via external ADCs or digital sensors (e.g., I²C temperature ICs).
What debug interface does the MSP430F5237IZQER support?
The MSP430F5237IZQER supports the Spy-Bi-Wire (SBW) interface using TEST/SBWTCK and RSTDVCC/SBWTDIO pins - a 2-wire subset of JTAG. This interface enables full programming, debugging, and boundary-scan capability while occupying minimal PCB area. SBW is compatible with TI's MSP-FET and standard IDEs like Code Composer Studio and IAR Embedded Workbench.
What is the pin count and package type of the MSP430F5237IZQER?
The MSP430F5237IZQER uses a MicroStar Junior™ BGA-80 package with 80 solder balls arranged in a 5 mm × 5 mm array and 0.5-mm pitch. It is functionally and pin-compatible with other ZQE-package devices in the MSP430F523x/F524x family, including MSP430F5239IZQER and MSP430F5247IZQER, allowing shared PCB footprints across variants.
How does the MSP430F5237IZQER manage power in low-power modes?
The MSP430F5237IZQER implements six low-power modes (LPM0–LPM4.5) with hierarchical peripheral gating. In LPM3, only the RTC, watchdog, and supply supervisor remain active at 1.9 µA; in LPM4, only RAM retention and supply supervisor operate at 1.1 µA; and in LPM4.5, all clocks and RAM are disabled except for the reset circuit, drawing just 0.18 µA. Wake-up is triggered by interrupts from any enabled peripheral or I/O pin.
MSP430F5237IZQER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-VFBGA
- Series:
- MSP430F5xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
MSP430F5237IZQER FAQ
1.How can I place an order for MSP430F5237IZQER through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F5237IZQER 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 MSP430F5237IZQER reliable?
The price and inventory of MSP430F5237IZQER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F5237IZQER is usually 5 days.
3.What payment methods are accepted for MSP430F5237IZQER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F5237IZQER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F5237IZQER?
MSP430F5237IZQER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F5237IZQER 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 MSP430F5237IZQER?
For technical support, including MSP430F5237IZQER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F5237IZQER requirements.
6.How does Aetrix verify that MSP430F5237IZQER is sourced from the original manufacturer or authorized distributors?
All MSP430F5237IZQER 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 MSP430F5237IZQER meets industry standards.
7.What is the process for return or replacement of MSP430F5237IZQER?
All MSP430F5237IZQER units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F5237IZQER, 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 MSP430F5237IZQER part is unused and in its original packaging.
Return procedure for MSP430F5237IZQER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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