It has 256 KB of Flash program memory and 18 KB of SRAM, with 74 I/O lines and a 16-channel 12-bit ADC.
The 20 MHz clock rate on this 16-bit MCU handles real-time control loops like PID and sensor polling without an external oscillator. The internal oscillator is rated for this speed.
Memory sizing for the firmware
The 18 KB SRAM is the tighter resource — if your application uses large lookup tables or double-buffered ADC captures, verify the RAM budget early. Flash endurance is typical for MSP430s, adequate for field-upgradeable firmware.
The 16-channel 12-bit ADC covers multi-sensor acquisition without an external mux.
Lifecycle status: obsolete — sourcing reality
Texas Instruments has marked the MSP430F5335IZQWT as obsolete. No official successor order code is listed in the evidence. For production BOMs, the part is no longer available through authorized distribution channels. Sourcing is limited to the independent market. We can source and quote this part to order against an RFQ.