Texas Instruments MSP430FG477IPNR

Overview

MSP430FG477IPNR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 32 KB flash, 2 KB RAM, a 16-bit sigma-delta ADC with five differential inputs, dual 12-bit DACs, two configurable op-amps, dual 16-bit timers (Timer_A and Timer_B), two USCI modules (UART/I²C/SPI), and integrated LCD driver supporting up to 128 segments - deployed in handheld meters, thermostats, and analog sensor systems.

For engineers reviewing the MSP430FG477IPNR datasheet, MSP430FG477IPNR pinout, MSP430FG477IPNR application, or MSP430FG477IPNR equivalent, this page delivers verified technical context, package-specific pin functions, real-world use cases, and validated alternative options for embedded measurement and LCD-based control designs.

Technical Context

The MSP430FG477IPNR integrates a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO), enabling sub-6 µs wake-up from LPM3 standby mode. Its analog subsystem includes SD16_A with internal reference, programmable gain, and temperature sensing capability, plus dual OA modules configurable as PGA, comparator, or transimpedance amplifier.

Digital peripherals include USCI_A0 (UART/IrDA/SPI) and USCI_B0 (I²C/SPI), Timer_A with three capture/compare registers, Timer_B with seven shadow-capable registers, and a basic timer with RTC functionality - all operating across 1.8–3.6 V supply and –40°C to +85°C ambient.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (PN), body size 12 mm × 12 mm, RoHS-compliant, surface-mount. Pinout defined per TI SLAS580E Rev. May 2020, Figure 4-1 and Table 4-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FG477IPNR, the FG478IPNR and FG479IPNR offer identical peripheral sets, timing behavior, and package compatibility - differing only in flash capacity (32 KB → 48 KB → 60 KB) to accommodate progressively more sophisticated firmware while preserving board layout and power profile.

Availability

MSP430FG477IPNR is available at Aetrix Electronics and suitable for handheld meters, thermostats, and analog sensor systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MSP430FG477IPNR 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 50 years of innovation in low-power microcontrollers and precision analog solutions.

The MSP430FG47x product line was designed for ultra-low-power, mixed-signal measurement applications requiring integrated analog peripherals, LCD support, and extended battery life - targeting portable instrumentation and smart controls.

FAQ

What is the maximum operating frequency of the MSP430FG477IPNR at 3.3 V?

The MSP430FG477IPNR supports a maximum system clock (MCLK) frequency of 8 MHz at VCC = 3.3 V and TA = 25°C, as specified in Section 5.3 of the SLAS580E datasheet. This applies to DCOCLK operation; crystal oscillators (LFXT1/XT2) have separate frequency limits - LFXT1 up to 6 MHz in XT1 mode, XT2 up to 8 MHz.

Does the MSP430FG477IPNR support I²C communication?

Yes, the MSP430FG477IPNR supports I²C communication via USCI_B0 module, as confirmed in Section 1.1 Features and Section 5.49 of the SLAS580E datasheet. It operates in standard-mode (up to 100 kHz) and fast-mode (up to 400 kHz) with programmable clock stretching and multi-master arbitration.

What LCD configuration does the MSP430FG477IPNR support?

The MSP430FG477IPNR integrates LCD_A driver supporting up to 128 segments with 4 commons (COM0–COM3), as stated in Section 1.1 Features and Section 5.19. It supports static, 2-mux, 3-mux, and 4-mux modes, with programmable contrast, charge-pump bias (V1–V4), and software-controlled segment mapping.

Is the MSP430FG477IPNR pin-compatible with other FG47x devices?

Yes, the MSP430FG477IPNR is pin-compatible with MSP430FG478IPNR and MSP430FG479IPNR in the same 80-pin PN package, as confirmed in Table 3-1 (Device Comparison) and Section 4.1 (Pin Diagrams) of SLAS580E. All share identical pin numbering, electrical characteristics, and peripheral mappings.

What is the typical active-mode current consumption of the MSP430FG477IPNR at 1 MHz and 2.2 V?

The typical active-mode current consumption of the MSP430FG477IPNR is 262 µA at f(MCLK) = 1 MHz and VCC = 2.2 V, per Section 5.4 (Supply Current) of SLAS580E. This value assumes AVCC = DVCC = VCC, ACLK = 32.768 kHz, and no external load on I/O pins.