FRAM MCU for metering and low-power display applications
The MSP430FR4132IG48R: FRAM writes at bus speed with near-zero power penalty and supports 10^15 write cycles, which eliminates the wear-leveling overhead needed with flash for frequent data logging or parameter updates. The 1 KB SRAM handles stack and scratchpad for the 16 MHz CPU core. This part targets battery-powered and energy-harvesting designs where the integrated LCD driver and the 8-channel 10-bit ADC handle the typical sensor-and-display chain.
LCD driver, ADC, and serial connectivity — peripheral fit for panel and instrumentation designs
The on-chip LCD controller drives segmented glass or character displays directly, saving a separate display driver IC and its associated board area. Combined with the 10-bit ADC on eight channels, a single MSP430FR4132IG48R can read analog sensors (temperature, pressure, current shunt) and present results on a local LCD while communicating over I²C or SPI to a host processor. The 44 GPIO pins in the 48-TSSOP package provide enough headroom for a keypad matrix, status LEDs, and external memory chip selects alongside the serial buses. The brown-out reset and POR supervisor are integrated, so only a decoupling cap and an optional external crystal (the internal oscillator is sufficient for many timing tasks) are needed for a minimum run circuit.
At the low end, the FRAM retains data down to the minimum operating voltage without a separate EEPROM.
Lifecycle and sourcing — confirmed active production
Texas Instruments lists the MSP430FR4132IG48R with an active product status as of the current lifecycle review. For new designs, the FRAM MSP430 family remains TI's mainstream ultra-low-power platform, so roadmap continuity is solid through at least the medium term.