Active 16-bit MCU with 384KB Flash and 34KB RAM for sensor and protocol handling
The MSP430F5358IZCAT is a 16-bit MCU from the MSP430F5xx family, built around the MSP430 CPUXV2 core running at 20MHz. It packs 384KB of program Flash and 34KB of RAM — enough headroom to run a full protocol stack (like a TCP/IP or BLE host controller) while logging sensor data locally without external memory. Texas Instruments lists this part as Active, so there is no looming last-time-buy deadline. The device is ROHS3 compliant, covering EU and similar regulatory requirements without exemption.
Mixed-signal peripherals: 16-channel ADC and dual DAC reduce external BOM
On-chip data converters include a 12-bit ADC with 16 multiplexed channels and two 12-bit DACs. For a system that reads multiple analog sensors (temperature, pressure, current) and outputs a control voltage or drives an analog indicator, this eliminates the need for separate ADC or DAC chips. The 74 general-purpose I/O lines provide ample connectivity for parallel displays, keypads, or memory-mapped peripherals. Communication interfaces cover I²C, SPI, UART, IrDA, and SCI, so the MCU can talk to common sensor modules, serial Flash, or wireless transceivers without external level shifters.
Package and power: 113-NFBGA with wide supply range
The device comes in a 113-ball NFBGA package measuring 7x7mm. Supply voltage range is 1.8V to 3.6V. At the low end, a single Li-ion cell in its discharge plateau (~3.0V) or a 1.8V regulated rail both work.