What the MSP430FR5720IPWR is and where it fits
The Texas Instruments MSP430FR5720IPWR is a 16-bit microcontroller built around the MSP430 CPUXV2 core, clocked at 8 MHz. It carries 4 KB of FRAM program memory and 1 KB of SRAM, with a 10-bit ADC sampling eight channels. The part operates from 2.0 V to 3.6 V across the industrial temperature range of -40°C to 85°C, housed in a 28-pin TSSOP package. Typical applications include sensor nodes, metering, and low-power control loops where FRAM's fast write endurance and non-volatility simplify data logging and firmware updates.
FRAM program memory — why it matters for the BOM
The 4 KB FRAM replaces conventional Flash or EEPROM for code and small data sets. FRAM writes at bus speed with no erase cycle, so field updates are faster and wear-leveling is unnecessary. For a design that logs or recalibrates frequently, this eliminates the write-cycle budget concern that Flash-based MCUs impose.
8 MHz core — what it means for timing closure
Lifecycle and sourcing posture
The MSP430FR5720IPWR carries an EOL lifecycle stage, meaning Texas Instruments has discontinued this specific variant. No official successor is listed in the available records. For new production, designers should evaluate the active MSP430FR57xx family siblings; for existing BOM lines, this part is sourced through independent distribution on a quoted-to-order basis. Availability and current pricing are confirmed at quote time against an RFQ.
Peripherals and I/O allocation
The device provides 21 general-purpose I/O pins, plus dedicated pins for I²C, SPI, UART, LINbus, and IrDA. The 10-bit ADC with eight channels covers analog inputs for temperature, current, or voltage sensing. Brown-out reset and power-on reset are integrated, so external supervisor ICs are not needed. The 28-pin TSSOP footprint suits space-constrained PCBs where a 32-pin QFN would be overkill.