OTP memory locks the firmware — no field updates
The Texas Instruments MSP430P325AIFN is a 16-bit MSP430 CPU16 microcontroller from the MSP430x3xx series, clocked at 8 MHz with 16 KB of OTP program memory and 512×8 bytes of RAM. The OTP (one-time programmable) memory means the firmware is fixed at the factory — there is no erasing or reprogramming after the device is programmed. This suits applications where the code is finalized before production and field updates are not required, such as in sealed metering modules or dedicated display controllers.
On-chip peripherals reduce external component count
Integrates a 6-channel 14-bit ADC, LCD driver, POR, WDT, and UART/USART. Supply range is 2.5 V to 5.5 V, operating from -40°C to 85°C.
