Texas Instruments MSP430FR6928IPMR

Overview

MSP430FR6928IPMR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 96KB nonvolatile memory, 2KB RAM, integrated LCD driver (up to 116 segments, 4-mux), 12-bit ADC with 8 external inputs, and real-time clock with calendar. It operates from 1.8 V to 3.6 V and targets battery-powered metering applications requiring long-term data retention and low active/standby current.

For engineers reviewing the MSP430FR6928IPMR datasheet, MSP430FR6928IPMR pinout, MSP430FR6928IPMR application, or MSP430FR6928IPMR equivalent, key selection factors include FRAM endurance (10¹⁵ write cycles), LPM3.5 RTC current (0.35 µA), integrated capacitive touch I/O on all ports P1–P10/PJ, and UART/I²C serial interfaces with hardware bootloader support.

Technical Context

The MSP430FR6928IPMR 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-HFXT is not implemented per device family specification.

Peripherals include three 16-bit Timer_A modules (TA0, TA1, TA2), one 16-bit Timer_B (TB0) with seven capture/compare registers, dual eUSCI_A (UART/IrDA/SPI) and eUSCI_B (I²C/SPI) modules, AES256 encryption coprocessor, and CRC16/CRC32 hardware accelerators-all operating within the same ultra-low-power architecture optimized for sub-µA standby modes.

Key Specifications

Pinout & Package

The MSP430FR6928IPMR is housed in a 64-pin LQFP (PM) package measuring 10 mm × 10 mm with exposed thermal pad (recommended connection to VSS). Pin functions are multiplexed across digital I/O, peripheral signals, and LCD segment/common outputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR6927IPMR, the MSP430FR6928IPMR provides 50% more FRAM for extended data history without changing PCB layout; versus MSP430FR6977IPN, it trades HFXT and extra ADC channels for smaller size and lower power in space-constrained metering endpoints.

Availability

MSP430FR6928IPMR is available at Aetrix Electronics and suitable for water metering, heat cost allocation, and portable medical logging requiring stable component supply and long-term production continuity.

Supply support for MSP430FR6928IPMR 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 product line delivers ultra-low-power mixed-signal microcontrollers with integrated FRAM for battery-operated metering, sensing, and data logging applications demanding high endurance and minimal energy consumption.

FAQ

What is the maximum operating frequency of the MSP430FR6928IPMR?

The MSP430FR6928IPMR supports a maximum system clock frequency of 16 MHz using its factory-trimmed DCO or external LFXT source. This speed applies to active-mode execution; peripheral clocks (e.g., SMCLK, MCLK) derive from this source and may be prescaled. The device does not implement HFXT, so high-frequency crystal operation is not supported.

Does the MSP430FR6928IPMR support hardware encryption?

Yes, the MSP430FR6928IPMR integrates a dedicated AES256 security coprocessor that performs encryption and decryption operations independently of the CPU. It also includes a true random number seed generator to support cryptographic key derivation. These features are confirmed in the device's functional block diagram and security section of the SLAS797C datasheet.

How many external analog inputs does the ADC support on the MSP430FR6928IPMR?

The MSP430FR6928IPMR ADC12_B module supports up to 8 external analog input channels, as specified in Table 3-1 of the SLAS797C datasheet under "ADC12_B" for the MSP430FR6928 row. This is fewer than the 16-channel capability of higher-tier FR697x devices, consistent with its targeted use in cost-optimized metering applications.

What LCD configuration options are available on the MSP430FR6928IPMR?

The MSP430FR6928IPMR includes the LCD_C peripheral configured for up to 116 segments in a 4-mux arrangement. It supports static, 2-mux, 3-mux, and 4-mux drive schemes with programmable contrast control and internal charge pump. The device does not support the 320-segment, 8-mux capability found in MSP430FR697x variants.

Is the MSP430FR6928IPMR pin-compatible with other devices in the FR69xx family?

No, the MSP430FR6928IPMR in the 64-pin LQFP (PM) package is not pin-compatible with 80-pin or 100-pin FR69xx variants. While it shares functional peripherals with MSP430FR6927IPMR (same package), it differs from MSP430FR697x devices in pin count, HFXT omission, and peripheral scaling-requiring unique PCB layout.