The 25 MHz clock on the MSP430 CPUXV2 handles metrology interrupts and UART or SPI transactions within one line cycle. The six ADCs stream data for real-time response.
Lifecycle reality: obsolete, not active
No last-time-buy window remains open through the factory channel. Any procurement for a BOM line that carries this code will go through the surplus and independent distributor market. There is no official TI-recommended replacement listed in the lifecycle record; a cross-reference search against the MSP430F6xx family may yield a pin-compatible variant with similar ADC count, but that needs to be validated against the specific firmware and PCB layout.
Six 24-bit sigma-delta ADCs — the design anchor
The six 24-bit sigma-delta converters are the reason this part exists. They are intended for simultaneous sampling of three voltage and three current channels in a three-phase meter. The digital filter inside the modulator decimates the bitstream to a word rate that the CPU can read without a separate DSP. The 62 I/O lines give room for a segment LCD driver, tamper detection switches, and a communication module without an external port expander.