Texas Instruments MSP430FG439IZCAR

Overview

MSP430FG439IZCAR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 60 KB Flash, 2 KB RAM, a 12-bit ADC with 12 channels, dual 12-bit DACs, three configurable op-amps, integrated LCD driver for up to 128 segments, and two 16-bit timers (Timer_A3 and Timer_B3). It operates from 1.8 V to 3.6 V and supports battery-powered analog sensor systems requiring long runtime and on-chip signal conditioning.

For engineers reviewing the MSP430FG439IZCAR datasheet, MSP430FG439IZCAR pinout, MSP430FG439IZCAR application, or MSP430FG439IZCAR equivalent, key selection criteria include its 113-ball BGA (ZCA) package, 48 GPIOs, integrated LCD driver with COM/SEG support, ultra-low standby current (1.1 µA), and dual DAC synchronization capability - all critical for portable metering and human-interface embedded designs.

Technical Context

The MSP430FG439IZCAR implements a digitally controlled oscillator (DCO) enabling wake-up from LPM3 in under 6 µs, paired with five programmable low-power modes optimized for extended battery life. Its architecture integrates a single-channel DMA controller, USART0 configurable as UART or SPI, and a dedicated LCD module with programmable bias and mux control (1–4 multiplexing).

Peripherals are tightly coupled to the 16-bit CPU via constant generators and unified memory-mapped I/O. The device uses separate analog (AVCC/AVSS) and digital (DVCC/DVSS) supply domains, with independent voltage supervisor (SVS) and brownout detection, and supports JTAG-based debugging and bootloader (BSL) programming without external voltage.

Key Specifications

Pinout & Package

The MSP430FG439IZCAR is housed in a 113-ball BGA (ZCA) package measuring 7 mm × 7 mm with 0.5-mm pitch. Ball assignments follow TI's standard ZCA layout with dedicated AVCC/AVSS, DVCC/DVSS, and segmented LCD drive terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.

Compared with MSP430FG439IZCAR, the FG4619 offers scalable memory and display capability for evolving UI requirements, while the F6736 trades analog integration for metrology-grade ADC performance - making the MSP430FG439IZCAR optimal for compact, self-contained sensor-display systems needing balanced analog/digital resources.

Availability

MSP430FG439IZCAR is available at Aetrix Electronics and suitable for hand-held meters, analog sensor systems, digital thermostats, remote controls, and digital timers requiring stable component supply and long-term industrial availability.

Supply support for MSP430FG439IZCAR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer applications.

The MSP430FG43x product line targets ultra-low-power portable instrumentation and human-interface devices, emphasizing integrated analog peripherals, LCD support, and sub-µA power management for battery-critical designs.

FAQ

What is the package type and pin count of the MSP430FG439IZCAR?

The MSP430FG439IZCAR uses an 113-ball BGA (ZCA) package with 0.5-mm pitch and 7 mm × 7 mm body size. It provides 48 general-purpose I/O pins, plus dedicated analog, power, clock, and LCD interface terminals. Pin functions are defined in TI's SLAS380F datasheet Section 7.1 (Figure 7-2) and Section 7.2.1 (Signal Descriptions), confirming full compatibility with the ZCA footprint across the FG43x family.

Does the MSP430FG439IZCAR support in-system programming without external hardware?

Yes, the MSP430FG439IZCAR includes a factory-programmed bootstrap loader (BSL) accessible via UART using the built-in USART0 module. This allows flash programming and firmware updates directly through the serial interface without JTAG hardware - ideal for field upgrades. The BSL is protected by a security fuse, and no external programming voltage is required, as confirmed in Section 1 (Features) and Section 9.7 of the SLAS380F datasheet.

What LCD configurations does the MSP430FG439IZCAR support?

The MSP430FG439IZCAR supports LCDs with 1–4 multiplexing and up to 128 segments, using dedicated COM0–COM3 and SEG0–SEG31 pins plus auxiliary S10–S23 outputs. It accepts external bias voltages via R03–R33 inputs and generates internal bias internally. The LCD module supports static, 2-mux, 3-mux, and 4-mux drive schemes, as detailed in Section 9.9 and Figure 4-1 of the SLAS380F datasheet.

Can the MSP430FG439IZCAR operate from a single 3-V battery without external regulators?

Yes, the MSP430FG439IZCAR operates over 1.8 V to 3.6 V, making it compatible with standard 3-V lithium or alkaline batteries throughout their discharge curve. Its supply-voltage supervisor (SVS) monitors VCC and triggers reset if voltage drops below programmable thresholds, ensuring reliable operation down to 1.8 V. Section 8.3 (Recommended Operating Conditions) and Section 8.17 (SVS specifications) confirm this range and supervision capability.

How many analog input channels does the 12-bit ADC in the MSP430FG439IZCAR support?

The MSP430FG439IZCAR's ADC12 module supports 12 analog input channels (A0–A15, with A12–A15 shared with P5.1–P4.6), as explicitly stated in Table 6-1 (Device Comparison) and Section 8.22 (ADC Power Supply and Input Range Conditions) of the SLAS380F datasheet. Channel selection, reference source (internal/external), and sampling timing are fully configurable via ADC12CTL0/1 registers.