Texas Instruments MSP430F477IZCA

Overview

MSP430F477IZCA from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring a 16-bit sigma-delta ADC with five differential analog inputs, a 12-bit DAC, dual 16-bit timers (Timer_A and Timer_B), two USCI modules (UART/I²C/SPI), integrated LCD driver supporting up to 160 segments, and 32KB flash + 2KB RAM - designed for battery-powered metering and sensor interface applications requiring high-precision analog measurement and low standby current.

For engineers reviewing the MSP430F477IZCA datasheet, MSP430F477IZCA pinout, MSP430F477IZCA application, or MSP430F477IZCA equivalent, key selection criteria include its 113-ball nFBGA (ZCA) package, 1.8–3.6 V supply range, sub-1.1 µA LPM3 current with RTC and LCD active, 160-segment LCD drive capability, and compatibility with TI's MSP430x4xx toolchain and development ecosystem.

Technical Context

The MSP430F477IZCA implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO), enabling wake-up from LPM3 in under 6 µs. Its SD16_A module supports programmable oversampling ratios and internal reference for high-resolution sensor digitization, while the integrated LCD_A controller uses a regulated charge pump and supports static to 4-mux operation.

Two USCI modules provide independent UART, I²C, and SPI interfaces - USCI_A0 supports IrDA encoding/decoding and automatic baud-rate detection; USCI_B0 supports standard I²C master/slave and synchronous SPI. The device includes a basic timer with real-time clock (RTC) functionality and supply voltage supervisor (SVS) with programmable threshold detection.

Key Specifications

Pinout & Package

The MSP430F477IZCA is housed in an 113-ball nFBGA (ZCA) package measuring 7 mm × 7 mm with 0.5-mm ball pitch. Ball assignments follow TI's standardized ZCA pinout for the MSP430F47x family, supporting full I/O, analog, power, and JTAG connectivity in compact footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F478IZCA and MSP430F479IZCA, the MSP430F477IZCA offers identical analog performance, timer capabilities, and LCD drive strength but targets cost-optimized designs where 32 KB flash suffices - reducing BOM cost without sacrificing metrology accuracy or low-power behavior.

Availability

MSP430F477IZCA is available at Aetrix Electronics and suitable for smart metering, portable instrumentation, industrial thermostats, and battery-powered sensor nodes requiring stable component supply, long-term lifecycle assurance, and TI-qualified production traceability.

Supply support for MSP430F477IZCA 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 decades of expertise in ultra-low-power design and precision analog integration.

The MSP430F477IZCA belongs to the MSP430F47x mixed-signal microcontroller product line, engineered specifically for high-accuracy, battery-operated measurement systems such as utility meters, handheld test equipment, and environmental sensors - emphasizing analog integrity, LCD integration, and sub-µA power states.

FAQ

What is the package type and ball count for the MSP430F477IZCA?

The MSP430F477IZCA uses an 113-ball nFBGA (ZCA) package with 7 mm × 7 mm body size and 0.5-mm ball pitch. This compact, surface-mount package supports high-density PCB layouts and thermal performance suitable for sealed metering enclosures. Pin assignments match TI's standardized ZCA footprint for the MSP430F47x family, ensuring compatibility with existing layout templates and test fixtures.

Does the MSP430F477IZCA support real-time clock functionality?

Yes, the MSP430F477IZCA includes a basic timer module that can operate in real-time clock (RTC) mode using the 32.768 kHz LFXT1 crystal oscillator. It supports calendar functions (year/month/day/hour/minute/second), alarm interrupts, and automatic leap-year correction. The RTC remains active in LPM3 with typical current draw of 1.1–2.0 µA depending on temperature and supply voltage - verified in the device's electrical specifications table.

What LCD configuration options does the MSP430F477IZCA support?

The MSP430F477IZCA integrates the LCD_A peripheral supporting static, 2-mux, 3-mux, and 4-mux LCD drive modes - enabling up to 160 segments (e.g., 4 commons × 39 segments + 4 static). It features a regulated charge pump (LCDCPEN = 0) for stable V_LCDCAP, programmable bias voltage (VLCD), and software-controlled contrast adjustment. All required LCD pins (COM0–COM3, S0–S160) are mapped to dedicated BGA balls in the ZCA package.

Can the MSP430F477IZCA perform simultaneous UART and I²C communication?

Yes, the MSP430F477IZCA contains two independent universal serial communication interfaces: USCI_A0 (configurable as UART, IrDA, or SPI) and USCI_B0 (configurable as I²C or SPI). They operate concurrently with separate clock sources and interrupt vectors - allowing simultaneous UART communication with a host MCU and I²C communication with local sensors or EEPROMs without resource contention or software arbitration overhead.

What is the maximum resolution and performance of the onboard ADC in the MSP430F477IZCA?

The MSP430F477IZCA features the SD16_A 16-bit sigma-delta analog-to-digital converter with typical SINAD of 92.5 dB at OSR = 1024, effective resolution >15.3 bits, and integral nonlinearity (INL) <±1 LSB. It supports internal 1.2-V reference, five differential input channels, programmable gain (1×, 2×, 4×, 8×), and built-in temperature sensor - all verified in the device's Electrical Characteristics section (Section 5.24–5.27 of SLAS629B).