The CP220x is a single-chip Ethernet controller from Silicon Laboratories containing an integrated IEEE 802.3-compliant media access controller (MAC), a 10Base-T Physical Layer (PHY), and 8 kB of non-volatile Flash memory available in either a 28-pin QFN (5 x 5 mm), or 48-pin TQFP (9 x 9 mm) package. The CP220x can add Ethernet connectivity to any microcontroller or host processor with 11 or more port I/O pins. The 8-bit parallel external memory interface bus supports both Industry-standard Intel and Motorola bus formats in multiplexed and non-multiplexed mode. The CP2201 supports multiplexed addressing only. Mode select pins are used to select the bus interface mode. The on-chip Flash memory may be used to store user constants, web server content, or can be used as general purpose non-volatile memory. The Flash is factory pre-programmed with a unique 48-bit MAC address stored in the last six memory locations. With Ethernet's ease of implementation and use, and low maintenance costs, applications as varied as facilities management and utility and vending machine monitoring are now routinely handled via Ethernet.
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