The STM32F207ZCT6 is an ARM Cortex-M3 microcontroller from STMicroelectronics in LQFP-144, running at 120MHz with 256KB Flash and 128KB SRAM. The F207 family is the connectivity-focused line of the STM32 F2 series, featuring an Ethernet MAC (IEEE 802.3 compliant MII/RMII interface), USB 2.0 Full-Speed OTG, and two CAN 2.0B interfaces. The Ethernet MAC requires an external PHY (such as LAN8720A or DP83848) connected via MII (16 signals) or RMII (7 signals). The USB OTG supports device, host, and OTG modes with internal FS PHY. The 128KB SRAM is organized as 64KB main + 64KB CCM (Core Coupled Memory), where CCM can only be accessed by the CPU (not DMA), providing deterministic execution for time-critical code. The FSMC (Flexible Static Memory Controller) supports NOR Flash, SRAM, PSRAM, and NAND Flash with 8/16-bit data bus. The SDIO interface supports SD/SDHC/MMC cards at up to 48MHz (24MB/s). The 3-channel DMA supports memory-to-memory, peripheral-to-memory, and memory-to-peripheral transfers. The 12-bit ADC achieves 2.4Msps in triple interleaved mode. The device includes hardware CRC, true random number generator (RNG), and 128-bit unique ID. The ART (Adaptive Real-Time) accelerator with 64-line instruction cache and 8-line data cache achieves 150 DMIPS at 120MHz (125% of pure Cortex-M3 at 120MHz). The -ZCT6 suffix specifies 256KB Flash, LQFP-144, -40C to +85C.