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Texas Instruments MSP430FG437IZCAR
- Part No.:
- MSP430FG437IZCAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 113-VFBGA
- Datasheet:
-
MSP430FG437IZCAR.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 113NFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,838
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Product details
Overview
MSP430FG437IZCAR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 32 KB Flash, 1 KB RAM, a 12-bit ADC with 12 channels, dual 12-bit DACs, three configurable op-amps, two 16-bit timers (Timer_A3 and Timer_B3), USART, LCD driver for up to 128 segments, and integrated brownout detection. It operates from 1.8 V to 3.6 V and targets battery-powered sensor systems and handheld meters.
For engineers reviewing the MSP430FG437IZCAR datasheet, MSP430FG437IZCAR pinout, MSP430FG437IZCAR application, or MSP430FG437IZCAR equivalent, key selection criteria include its 48 I/O pins, BGA-113 (ZCA) package, LCD segment drive capability, low-power LPM4 mode (0.1 µA), and integrated analog peripherals enabling single-chip sensor front-end + display control.
Technical Context
The MSP430FG437IZCAR implements a 16-bit CPU with constant generators and a digitally controlled oscillator (DCO), enabling sub-6 µs wake-up from LPM3. Its analog subsystem integrates a 12-bit ADC with internal reference and autoscan, dual synchronized 12-bit DACs with voltage output, and three rail-to-rail op-amps configurable as PGA, comparator, or filter stages.
Digital peripherals include Timer_A3 (three capture/compare registers), Timer_B3 with shadow registers, USART0 supporting UART/SPI modes, single-channel DMA, and a dedicated LCD controller driving up to 128 segments using four COM lines and 32 SEG lines - all managed without CPU intervention in low-power modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle; enables efficient C code execution and deterministic real-time response. |
| Memory | 32 KB Flash (programmable via BSL, no external voltage); 1 KB RAM - sufficient for firmware + sensor data buffering in compact embedded nodes. |
| ADC | 12-bit SAR ADC with 12 input channels, internal reference, sample-and-hold, and autoscan - supports concurrent multi-sensor acquisition without CPU polling. |
| DACs | Dual 12-bit voltage-output DACs with synchronization - enables precise analog stimulus generation or programmable bias control for sensor conditioning. |
| Power Modes | Five low-power modes; LPM4 draws 0.1 µA at 25°C - extends battery life to years in intermittently active metering applications. |
| LCD Driver | Integrated driver for up to 128 segments (4 × 32), supporting static and multiplexed displays - eliminates external display controller in portable instrumentation. |
| Package | 113-ball BGA (ZCA), 7 mm × 7 mm - provides high I/O density and thermal performance for space-constrained industrial handhelds. |
Pinout & Package
The MSP430FG437IZCAR is housed in a 113-ball BGA (ZCA) package with 0.5-mm pitch, optimized for compact PCB layouts and thermal dissipation in sealed enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF+ | ADC/DAC reference positive terminal | Provides stable 2.5 V internal reference output; usable as precision bias source for external signal conditioning circuits. |
| P6.6/A6/DAC0/OA2I0 | Multiplexed I/O | Simultaneously serves as ADC input A6, DAC0 output, and OA2 inverting input - enables closed-loop DAC-driven op-amp configurations. |
| P5.4/COM3 | LCD common output | One of four COM outputs driving LCD backplane; supports 4-mux static or multiplexed segment addressing up to 128 segments. |
| RST/NMI | Reset and non-maskable interrupt input | Active-low reset with built-in pullup; also accepts NMI events - ensures reliable startup and fault recovery in safety-critical sensing. |
| XT2IN / XT2OUT | High-frequency crystal oscillator interface | Supports 1–8 MHz crystals or ceramic resonators for accurate system timing or UART baud rate generation independent of DCO drift. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | LPM4 current of 0.1 µA enables >10-year coin-cell battery life in wake-on-event sensor nodes with periodic LCD updates. |
| Integrated analog front-end | Combines 12-bit ADC, dual 12-bit DACs, and three op-amps on-die - reduces BOM count and PCB area for analog-intensive applications like thermistors or strain gauges. |
| Hardware LCD controller | Drives 128 segments without CPU involvement; supports blinking, contrast control, and partial update - ideal for low-power human-interface displays in thermostats or meters. |
| Bootloader (BSL) | UART-based in-system programming with no external tools - simplifies field firmware updates and eliminates need for JTAG debug headers in production units. |
| Supply monitoring | Programmable SVS with adjustable trip level and POR/BOR - prevents erratic behavior during brownout or power ramp-up in battery-operated devices. |
Applications
| Analog Sensor Systems | Digital Motor Control |
|---|---|
Use Scenario: Portable environmental monitor measuring temperature, humidity, and CO₂ using resistive and capacitive sensors. IC Role / Device Role / Timing Role: MSP430FG437IZCAR acts as main controller, ADC acquisition engine, LCD display driver, and low-power scheduler - managing sensor excitation, signal conditioning via op-amps, and segmented display refresh. Use Value: Single-chip integration eliminates external ADC, DAC, op-amp, and LCD controller ICs, reducing total solution size by 40% and power consumption by 35% versus discrete analog + MCU approach. | Use Scenario: Closed-loop speed regulation in cordless power tools using hall-effect rotor position feedback and PWM-driven BLDC motor. IC Role / Device Role / Timing Role: MSP430FG437IZCAR executes FOC algorithm, generates synchronized PWM via Timer_B3 shadow registers, reads position via ADC, and drives segmented RPM display. Use Value: Hardware timer synchronization ensures <100 ns phase alignment between PWM outputs and ADC sampling - critical for torque ripple reduction in high-efficiency motor drives. |
| Hand-Held Meters | Thermostats |
Use Scenario: Battery-powered multimeter with auto-ranging, true-RMS AC measurement, and 4-digit LCD readout. IC Role / Device Role / Timing Role: MSP430FG437IZCAR performs RMS calculation in software, controls auto-range switching via DAC-controlled gain stages, and manages LCD segment mapping and contrast. Use Value: Integrated DACs enable precise programmable gain control (0.1% step resolution), while LCD driver supports custom symbol rendering - eliminating need for external display controller and analog switches. | Use Scenario: Smart HVAC thermostat with ambient temperature/humidity sensing, user interface, and wireless communication interface. IC Role / Device Role / Timing Role: MSP430FG437IZCAR handles sensor reading, PID loop execution, LCD segment refresh, button debouncing, and wake-on-temperature-threshold interrupts. Use Value: Sub-6 µs wake-up from LPM3 allows rapid response to temperature changes while maintaining average current <2 µA - extending AA battery life beyond 2 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FG439IZCAR | 60 KB Flash, 2 KB RAM, same peripherals and package - higher memory headroom for complex algorithms or OTA updates. | Better suited for applications requiring larger firmware (e.g., BLE stack integration or advanced calibration tables). | Select when future firmware expansion or data logging buffer size exceeds 32 KB Flash capacity of MSP430FG437IZCAR. |
| MSP430F5529IPN | 25 MHz CPU, USB interface, 128 KB Flash, but no integrated LCD driver or dual DACs - different analog feature set. | Targets USB-connected test equipment or host-attached sensors rather than self-contained display-based instruments. | Choose only if USB connectivity is mandatory and LCD/DAC integration is handled externally; not a functional substitute for display-integrated use cases. |
Compared with MSP430FG439IZCAR, the MSP430FG437IZCAR trades memory capacity for cost-sensitive deployment in fixed-function meters; versus MSP430F5529IPN, it prioritizes ultra-low-power analog integration over processing speed and interface breadth - making it optimal for battery-powered, display-equipped sensor endpoints.
Availability
MSP430FG437IZCAR is available at Aetrix Electronics and suitable for analog sensor systems, handheld meters, thermostats, and digital timers requiring stable component supply across long-lifecycle industrial programs.
Supply support for MSP430FG437IZCAR 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 specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in industrial, automotive, and consumer electronics.
The MSP430FG43x product line was designed specifically for ultra-low-power, analog-intensive applications - integrating precision ADCs, DACs, op-amps, and LCD drivers to enable complete sensor-to-display solutions in a single chip.
FAQ
What is the maximum operating frequency of the MSP430FG437IZCAR at 3.6 V?
The MSP430FG437IZCAR achieves a maximum system clock (MCLK) frequency of 8 MHz at 3.6 V supply voltage, as specified in the recommended operating conditions. This frequency is generated by the digitally controlled oscillator (DCO) and supports real-time processing of ADC conversions, timer operations, and LCD updates without compromising ultra-low-power operation in active mode.
Does the MSP430FG437IZCAR support hardware UART communication?
Yes, the MSP430FG437IZCAR includes USART0, which can be configured in asynchronous UART mode using pins P2.4 (UTXD0) and P2.5 (URXD0). The module supports standard baud rates, automatic baud-rate detection, and parity control - enabling robust serial communication with host systems or peripheral sensors without CPU overhead.
How many LCD segments can the MSP430FG437IZCAR drive, and what mux configuration does it support?
The MSP430FG437IZCAR drives up to 128 segments using a 4-mux configuration (four COM lines and up to 32 SEG lines). It supports static, 2-mux, 3-mux, and 4-mux LCD types with programmable bias voltage and frame frequency - allowing direct interface to common industrial segment displays without external bias generation circuitry.
What are the key differences between the MSP430FG437IZCAR and MSP430FG438IZCAR?
The MSP430FG437IZCAR has 32 KB Flash and 1 KB RAM, while the MSP430FG438IZCAR offers 48 KB Flash and 2 KB RAM - identical peripherals, package, and pinout. Both share the same 12-bit ADC, dual DACs, op-amps, timers, and LCD driver. The difference lies solely in memory capacity, making MSP430FG438IZCAR suitable for more complex firmware or larger calibration datasets.
Can the operational amplifiers in the MSP430FG437IZCAR be used as comparators?
Yes, each of the three configurable op-amps (OA0, OA1, OA2) in the MSP430FG437IZCAR can be configured as a comparator by disabling feedback and using internal or external hysteresis. The device includes dedicated comparator_A for high-speed applications, but the op-amps provide flexible, software-configurable alternatives for precision threshold detection with programmable gain and offset.
MSP430FG437IZCAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 113-VFBGA
- Series:
- MSP430x4xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 32KB (32K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 12x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FG437IZCAR FAQ
1.How can I place an order for MSP430FG437IZCAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FG437IZCAR 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 MSP430FG437IZCAR reliable?
The price and inventory of MSP430FG437IZCAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FG437IZCAR is usually 5 days.
3.What payment methods are accepted for MSP430FG437IZCAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FG437IZCAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FG437IZCAR?
MSP430FG437IZCAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FG437IZCAR 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 MSP430FG437IZCAR?
For technical support, including MSP430FG437IZCAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FG437IZCAR requirements.
6.How does Aetrix verify that MSP430FG437IZCAR is sourced from the original manufacturer or authorized distributors?
All MSP430FG437IZCAR 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 MSP430FG437IZCAR meets industry standards.
7.What is the process for return or replacement of MSP430FG437IZCAR?
All MSP430FG437IZCAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FG437IZCAR, 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 MSP430FG437IZCAR part is unused and in its original packaging.
Return procedure for MSP430FG437IZCAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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