Texas Instruments MSP430FR6927IRGCR

Overview

MSP430FR6927IRGCR from Texas Instruments is an ultra-low-power 16-bit FRAM microcontroller designed for battery-operated metering and data-logging applications. It integrates 64KB of nonvolatile FRAM, 2KB RAM, a 12-bit ADC with 8 external inputs, integrated LCD driver supporting up to 116 segments (4-mux), and real-time clock with calendar function. Its active current is ~100 µA/MHz, standby (LPM3) is 0.4 µA, and RTC mode (LPM3.5) draws 0.35 µA typical.

For engineers reviewing the MSP430FR6927IRGCR datasheet, MSP430FR6927IRGCR pinout, MSP430FR6927IRGCR application, or MSP430FR6927IRGCR equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), capacitive touch I/O support on all ports P1–P10/PJ, AES256 encryption coprocessor, and dual eUSCI modules supporting UART/IrDA/SPI/I²C - all in a space-constrained 64-pin VQFN (9 mm × 9 mm) package.

Technical Context

The MSP430FR6927IRGCR implements the MSP430 CPUXV2 core with 16 general-purpose registers and executes instructions at up to 16 MHz. Its clock system includes a factory-trimmed DCO, low-frequency VLO, and 32-kHz LFXT crystal oscillator - but excludes HFXT (no HFXIN/HFXOUT pins). The device operates across 1.8 V to 3.6 V, with supply voltage minimum constrained by SVS thresholds.

Peripherals are organized into LPM3.5 domain (RTC, LCD, comparator) and active-domain modules (ADC12_B, timers, eUSCI). It features three-channel DMA, 32-bit hardware multiplier, CRC16/CRC32 engines, and MPU with IP encapsulation. Capacitive touch capability is embedded across all I/O ports without external components.

Key Specifications

Pinout & Package

VQFN-64 (RGC) package, 9 mm × 9 mm body size, exposed thermal pad recommended to be connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR6928IRGCR and MSP430FR69271IRGCR, the MSP430FR6927IRGCR offers optimal balance of FRAM capacity, pin-compatible footprint, and UART-based BSL - making it ideal for cost-sensitive, high-volume metering designs where 64KB suffices and UART programming is standard.

Availability

MSP430FR6927IRGCR is available at Aetrix Electronics and suitable for water metering, heat cost allocation, and portable medical logging requiring stable component supply and long-term industrial availability.

Supply support for MSP430FR6927IRGCR 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 company delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The MSP430FR69xx family targets ultra-low-power metering and sensing applications, combining FRAM nonvolatility, integrated LCD, RTC, and security to replace legacy flash-based MCUs in battery-critical systems.

FAQ

What is the maximum operating frequency of the MSP430FR6927IRGCR?

The MSP430FR6927IRGCR supports a maximum system clock frequency of 16 MHz using its factory-trimmed DCO or external LFXT crystal. It does not support HFXT oscillation, so high-frequency crystal options are unavailable. All timing-critical peripherals - including ADC12_B, timers, and eUSCI modules - operate reliably within this 16-MHz limit, with active-mode current scaling linearly at ~100 µA/MHz.

Does the MSP430FR6927IRGCR support hardware encryption?

Yes, the MSP430FR6927IRGCR includes a dedicated AES256 security coprocessor with integrated key storage and a true random number seed generator. This enables fast, deterministic encryption/decryption of data stored in FRAM or transmitted via eUSCI interfaces - critical for secure metering and medical logging. The coprocessor operates independently of the CPU, preserving real-time responsiveness during cryptographic operations.

How many I/O pins does the MSP430FR6927IRGCR have, and what special capabilities do they offer?

The MSP430FR6927IRGCR provides 52 general-purpose I/O pins across ports P1–P10 and PJ. Every pin supports capacitive touch sensing without external components, edge-selectable wake-up from LPM modes, and programmable pullup/pulldown resistors. Additionally, multiple pins are multiplexed with timer capture/compare, USCI serial functions, ADC inputs, and LCD segment/common drivers - enabling highly integrated system-on-chip designs.

What LCD configuration is supported by the MSP430FR6927IRGCR?

The MSP430FR6927IRGCR integrates the LCD_C peripheral supporting static, 2-mux, 3-mux, and 4-mux LCD displays with up to 116 segments. It provides dedicated pins for up to 5 LCD voltage rails (V1–V5), COM outputs (COM0–COM7), and segment drivers - eliminating need for external bias generators or segment drivers. The 4-mux mode is commonly used in compact meter displays requiring high segment density in minimal pin count.

Is the MSP430FR6927IRGCR pin-compatible with other devices in the FR692x family?

Yes, the MSP430FR6927IRGCR in the 64-pin VQFN (RGC) package is pin-compatible with MSP430FR6928IRGCR and MSP430FR69271IRGCR. All share identical pin mapping, electrical characteristics, and peripheral register layout. This allows direct substitution for memory or bootloader variation without PCB redesign - provided the application accommodates differences in FRAM size (64KB vs. 96KB) or BSL interface (UART vs. I²C).