Six 24-bit sigma-delta ADCs — the core of a metering-class MCU
Its standout feature is the six 24-bit sigma-delta ADCs, purpose-built for polyphase energy metering, power-quality monitoring, and precision industrial measurement where simultaneous multi-channel acquisition matters. The 512 KB Flash and 16K x 8 RAM provide enough headroom for the metrology firmware stack plus communication protocol handling.
Peripheral set and connectivity for metering and control
Beyond the sigma-delta converters, the device integrates a 10-bit ADC (8 channels), DMA for data movement without CPU intervention, an LCD driver for direct display connection, and PWM and watchdog timer for real-time control.
128-pin LQFP — board area and routing
Housed in a 128-LQFP package (20x14 mm body), this is a surface-mount part with 90 I/O available. The fine-pitch QFP demands careful decoupling placement — plan for a solid ground plane and a 1 µF ceramic per supply pin cluster.
Active lifecycle — no near-term LTB risk
For BOM planning, this is a low-risk line item for multi-year production runs.