Texas Instruments MSP430FR4132IG48R

Overview

MSP430FR4132IG48R from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 8KB+512B FRAM, 1KB RAM, 10-bit ADC with 8 channels, integrated LCD driver supporting up to 4×24 or 8×20 segments, and capacitive touch I/O - designed for battery-powered smart metering and portable medical devices operating from 1.8 V to 3.6 V.

For engineers reviewing the MSP430FR4132IG48R datasheet, MSP430FR4132IG48R pinout, MSP430FR4132IG48R application, or MSP430FR4132IG48R equivalent, key selection considerations include its TSSOP-48 package, 44 I/O count, LPM3.5 mode with RTC+LCD active at 15 nA, FRAM endurance (10¹⁵ writes), and dual eUSCI modules supporting UART/I²C/SPI in resource-constrained embedded designs.

Technical Context

The MSP430FR4132IG48R implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO) achieving ±1% accuracy at room temperature using on-chip REFO. Its clock system integrates multiple oscillators - including XT1 (32 kHz crystal), VLO (10 kHz), MODCLK, and DCO - with programmable prescalers for MCLK and SMCLK to support dynamic power/performance scaling.

Peripherals are partitioned across low-power domains: the RTC counter and LCD remain functional in LPM3.5 while digital logic is powered down; ADC operates at 200 ksps with internal 1.5-V reference and sample-and-hold; both Timer_A3 modules provide three capture/compare registers each, though only CCR1/CCR2 are externally routed in the 48-pin variant.

Key Specifications

Pinout & Package

TSSOP-48 (DGG) package, 12.5 mm × 6.1 mm body size, lead pitch 0.5 mm, exposed pad not included.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR4133IG48R, the original offers identical footprint and LCD capability but less memory; versus MSP430FR2476TSSR, it trades LCD integration for greater ADC capability and memory - making MSP430FR4132IG48R optimal for cost-sensitive, display-equipped metering where memory demand is moderate.

Availability

MSP430FR4132IG48R is available at Aetrix Electronics and suitable for smart metering, portable medical diagnostics, remote controls, and HVAC thermostats requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for MSP430FR4132IG48R 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 energy-efficient electronics.

The MSP430FR41xx product line delivers ultra-low-power mixed-signal MCUs optimized for LCD-based metering and portable health devices - combining FRAM nonvolatility, integrated peripherals, and sub-µA standby operation to minimize system power and bill-of-materials cost.

FAQ

What is the maximum operating frequency of the MSP430FR4132IG48R?

The MSP430FR4132IG48R features a digitally controlled oscillator (DCO) with frequency-locked loop (FLL) capable of operating up to 16 MHz. This maximum frequency is achievable across the full recommended supply voltage range of 1.8 V to 3.6 V and is specified with ±1% accuracy at room temperature using the on-chip 32-kHz REFO as reference. The device wakes from low-power modes to active mode in less than 10 µs.

Does the MSP430FR4132IG48R support capacitive touch sensing on all I/O pins?

Yes, the MSP430FR4132IG48R supports capacitive touch sensing on all 44 general-purpose I/O pins. This capability is implemented in hardware with dedicated capacitive sensing I/O circuitry, enabling robust button, slider, and proximity detection without external components. Each pin can be individually configured for touch operation via software registers, and the design includes built-in noise immunity and auto-calibration features.

What LCD segment configurations does the MSP430FR4132IG48R support?

The MSP430FR4132IG48R supports two LCD multiplexing configurations: 4×24 segments (4 commons, 24 segments) or 8×20 segments (8 commons, 20 segments). These configurations are enabled by mapping specific I/O pins (P2–P7, P3–P4) to LCD segment and common functions. Contrast is adjustable from 2.6 V to 3.5 V in 0.06-V steps, and the on-chip charge pump sustains LCD operation in LPM3.5 standby mode.

How much FRAM and RAM does the MSP430FR4132IG48R include?

The MSP430FR4132IG48R integrates 8KB of program FRAM and 512B of information FRAM, plus 1KB of SRAM. The FRAM is unified memory - usable for code, constants, and data storage - with built-in error correction code (ECC), configurable write protection, and 10¹⁵ write-cycle endurance. Unlike flash, FRAM supports byte-level writes at bus speed and retains data without power.

What communication interfaces are available on the MSP430FR4132IG48R?

The MSP430FR4132IG48R includes two enhanced universal serial communication interfaces: eUSCI_A0 supporting UART, IrDA, and SPI; and eUSCI_B0 supporting SPI and I²C. Both modules operate independently and concurrently, enabling simultaneous communication with multiple peripherals - for example, UART with a host MCU and I²C with environmental sensors - without CPU intervention via automatic DMA-like transfers.