Microchip Technology Inc.
Offers a wide range of ICs analog, digital, mixed signal, PIC 8-,16-, 32-bit MCU, RTClocks, interfaces, memories, motor drivers, power management, temperature sensors, touch and input sensing, wireless products low power (including ZigBee), development systems, Silicon Storage Tech Inc. components.
Microchip Technology Inc. (www.microchip.com) is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.
See: Design Support on Microchip site.
Microchip components and Development Tools for applications, you can find using Development Tool Selector: http://www.microchip.com/wwwproducts/dts.aspx