Texas Instruments MSP430FR4132IG56

Overview

MSP430FR4132IG56 from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller in 56-pin TSSOP package, featuring 8KB+512B FRAM, 1KB RAM, 10-bit ADC with 8 channels, integrated LCD driver supporting up to 4×30 or 8×26 segments, and capacitive touch I/O - designed for battery-powered metering and portable medical devices such as water meters and blood glucose monitors.

For engineers reviewing the MSP430FR4132IG56 datasheet, MSP430FR4132IG56 pinout, MSP430FR4132IG56 application, or MSP430FR4132IG56 equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), shutdown current (15 nA), LCD charge-pump operation in LPM3.5, and dual eUSCI modules supporting UART/I²C/SPI in a compact 14 mm × 6.1 mm footprint.

Technical Context

The MSP430FR4132IG56 implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO) achieving ±1% accuracy at room temperature using on-chip reference. Its clock system integrates REFO (32 kHz), VLO (10 kHz), MODCLK, and external XT1 crystal support - enabling sub-10 µs wake-up from LPM modes.

It features two Timer_A3 modules (each with three capture/compare registers), CRC16 engine, RTC counter, and intelligent peripherals including IR modulation logic. All 52 I/O pins are capacitive-touch-capable, and the LCD controller includes on-chip charge pump for segment biasing during standby (LPM3.5).

Key Specifications

Pinout & Package

Package: 56-pin TSSOP (DGG), body size 14 mm × 6.1 mm, lead pitch 0.5 mm. Compatible with standard surface-mount reflow processes and automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR4133IG56 and MSP430FR2355TSSR, the MSP430FR4132IG56 offers optimal balance of FRAM capacity, LCD integration, and ultra-low-power operation for cost-sensitive, display-equipped metering devices - delivering full functionality in the smallest possible footprint without compromising endurance or RTC accuracy.

Availability

MSP430FR4132IG56 is available at Aetrix Electronics and suitable for water metering, blood glucose monitoring, and thermostat control requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for MSP430FR4132IG56 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 microcontrollers and precision analog solutions.

The MSP430FR41xx product line targets cost-sensitive, battery-operated LCD applications - combining FRAM nonvolatility, integrated peripherals, and industry-leading low-power modes for smart meters, portable medical devices, and consumer HMI systems.

FAQ

What is the maximum operating frequency of the MSP430FR4132IG56?

The MSP430FR4132IG56 operates at up to 16 MHz using its on-chip digitally controlled oscillator (DCO) with frequency-locked loop (FLL). At room temperature and 3 V supply, the DCO achieves ±1% accuracy with internal reference - enabling deterministic real-time execution without external crystal for non-RTC-critical tasks. The MSP430FR4132IG56 supports programmable MCLK prescalars (1–128) and SMCLK division (1, 2, 4, 8) for flexible peripheral clocking.

Does the MSP430FR4132IG56 support external crystal oscillators?

Yes, the MSP430FR4132IG56 supports an external 32.768-kHz crystal via XIN/XOUT pins (pins 13/12 in TSSOP-56) for precise real-time clock operation. This XT1 oscillator is essential for time-stamped data logging in water meters or medical devices. The device also includes internal oscillators: REFO (32 kHz), VLO (10 kHz), and MODCLK - allowing flexible clock source selection based on accuracy and power requirements. The MSP430FR4132IG56 does not require external crystals for basic operation but relies on them for RTC-grade timing.

How many I/O pins does the MSP430FR4132IG56 have, and what are their capabilities?

The MSP430FR4132IG56 provides 52 general-purpose I/O pins in its 56-pin TSSOP package. All 52 pins support capacitive touch sensing without external components, and 16 of them (P1.x and P2.x) can generate interrupts to wake the device from low-power modes. Each pin is software-configurable for multiple functions including GPIO, timer capture/compare, UART/I²C/SPI signals, ADC inputs, LCD segment/common outputs, and crystal interface. The MSP430FR4132IG56's unified I/O architecture simplifies PCB layout and firmware development for HMI-rich applications.

What LCD configurations does the MSP430FR4132IG56 support?

The MSP430FR4132IG56 supports up to 4×30 or 8×26 segment LCD configurations - totaling 120 or 208 segments respectively. Each LCD pin is software-configurable as either SEG or COM, and contrast is adjustable in 0.06-V steps from 2.6 V to 3.5 V. An on-chip charge pump (enabled via LCDCAP0/LCDCAP1 pins) powers the LCD during LPM3.5 standby mode, maintaining display visibility at <1 µA total current. This eliminates external bias circuitry and makes the MSP430FR4132IG56 ideal for compact, low-power display applications like thermostats and portable diagnostics.

Is the MSP430FR4132IG56 pin-compatible with other devices in the FR413x family?

Yes, the MSP430FR4132IG56 is pin-compatible with MSP430FR4133IG56 and MSP430FR4131IG56 in the same 56-pin TSSOP (DGG) package - sharing identical pinout, electrical characteristics, and peripheral mapping. This allows hardware reuse across variants differing only in FRAM/RAM size and ADC channel count (8 vs. 10). Firmware can be ported with minimal modification, and PCB designs can accommodate multiple family members via BOM-level selection. The MSP430FR4132IG56 thus enables scalable product families with common layout and test infrastructure.