The NXP MIMXRT1021CAG4A is a 32-bit single-core ARM Cortex-M7 MCU running at 400 MHz, part of the i.MX RT1020 series. Program memory is external, so the BOM must include a separate Flash or PSRAM device; the 256K x 8 on-chip RAM handles data and tight loops. The 96 I/O and peripheral set — CANbus, Ethernet, USB OTG, and multiple serial interfaces — suit it as a real-time control and communication hub in industrial drives, PLCs, and IoT edge gateways.
No forced cooling required at the top end, but thermal design should keep Tj under the limit during sustained 400 MHz operation.
Key peripherals and connectivity
The 19-channel 12-bit ADC provides enough analog front-end for multi-sensor feedback in motor control or power monitoring. Connectivity includes CANbus for vehicle or factory networks, Ethernet for backbone links, USB OTG for device/host switching, plus SPI, I²C, UART, and SDIO for local peripherals. The EBI/EMI interface can connect parallel displays or external memory directly.
The MIMXRT1021CAG4A has an active lifecycle status.