MSP430F67451IPZR — a 16-bit MCU built for precision metering
The 100-LQFP package in a 14x14 mm body gives access to 62 I/O pins.
This part carries an Obsolete lifecycle status. TI no longer manufactures the MSP430F67451IPZR in volume, and no official last-time-buy window is open. For production builds, you will need to source from independent distribution on a quoted-to-order basis. No direct successor order code is listed; the MSP430F6xx family includes pin-compatible density variants, but verifying exact peripheral compatibility against your firmware is essential before committing a board spin.
Peripheral set — the sigma-delta ADC array is the differentiator
The four 24-bit sigma-delta converters are the headline feature here. They are designed for direct connection to current and voltage sensors in polyphase energy meters, eliminating the need for external analog front-ends. The LCD driver supports segment displays common in utility meters and panel instruments. Brown-out detect and POR are integrated, so external reset supervision is optional in most designs.