Obsolete – last-time-buy planning required
The MSP430F67691IPEUR carries an Obsolete product status per the manufacturer. For new designs, a pin-compatible alternative within the MSP430F6xx family should be evaluated; the 512 KB Flash and 6x24-bit Σ-Δ ADC peripheral set is specific to this metering-oriented variant.
Core and memory – 25 MHz, 512 KB Flash, 32 KB RAM
That Flash density is generous for a 16-bit part – enough for complex metrology firmware, LCD display drivers, and communication protocol stacks without external memory. The 32 KB RAM supports multi-channel data buffering from the six Σ-Δ ADCs.
Peripherals – six 24-bit Σ-Δ ADCs for precision measurement
The standout feature is the six 24-bit sigma-delta analog-to-digital converters, purpose-built for polyphase energy metering. Each channel can digitize voltage and current inputs simultaneously, supporting Class 0.2 accuracy. Additional peripherals include a brown-out detect/reset, DMA, LCD driver, POR, PWM, and watchdog timer.
Package and environment – 128-LQFP, industrial temperature
Housed in a 128-LQFP package (20x14 mm body), surface-mount only.