The differences between the Performance Line and the Access Line can easily be seen in this graphic. In addition to the features listed on the left side of the graphic, the Performance Line includes a 72 MHz Cortex-M3 core, up to 64 KB SRAM, 2/3x12-bit 1 µs ADC, USB-FS device, SDIO, I2S, CAN bus, and PWM timer’s. The Access Line has a 36 MHz core, up to 48 Kbytes of SRAM and a single high speed, high precision ADC.