Processor: ARM Cortex‑M7 core at 600 MHz (NXP iMXRT1062), dual-issue superscalar design for high-performance real-time applications Memory: 8 MB flash memory and 1 MB RAM (512 KB tightly coupled), with two locations for optional PSRAM expansion Connectivity: USB host port and native microSD card socket, no onboard Ethernet PHY (requires separate magjack if needed) I/O Capability: Up to 55 I/O pins (42 breadboard-compatible), including multiple SPI, I²S audio, S/PDIF, CAN (1 CAN FD + 2 CAN 2.0), PWM, serial ports, and SDIO Power & Features: Approx. 100 mA at 600 MHz; supports dynamic clock scaling, On/Off push button control, and RTC via VBAT coin‑cell backup Note: This Teensy 4.1 does not have Ethernet capabilities
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