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CY8C20224-12LKXIT Datasheet(PDF) 4 Page - Cypress Semiconductor |
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CY8C20224-12LKXIT Datasheet(HTML) 4 Page - Cypress Semiconductor |
4 / 41 page CY8C20224, CY8C20324 CY8C20424, CY8C20524 Document Number: 001-41947 Rev. *L Page 4 of 41 Typical Application Figure 2 illustrates a typical application: CapSense multimedia keys for a notebook computer with a slider, four buttons, and four LEDs. Figure 2. CapSense Multimedia Button-Board Application Additional System Resources System resources, some of which are previously listed, provide additional capability useful to complete systems. Additional resources include low voltage detection (LVD) and power on reset (POR). Brief statements describing the merits of each system resource follow. ■ The I 2C slave and SPI master-slave module provides 50, 100, or 400 kHz communication over two wires. SPI communication over three or four wires runs at speeds of 46.9 kHz to 3 MHz (lower for a slower system clock). ■ LVD interrupts signal the application of falling voltage levels, while the advanced POR circuit eliminates the need for a system supervisor. ■ An internal 1.8-V reference provides an absolute reference for capacitive sensing. ■ The 5 V maximum input, 3 V fixed output, low dropout regulator (LDO) provides regulation for I/Os. A register controlled bypass mode enables the user to disable the LDO. Getting Started This datasheet is an overview of the PSoC integrated circuit and presents specific pin, register, and electrical specifications. For in depth information, along with detailed programming details, see the PSoC® Technical Reference Manual. For up-to-date ordering, packaging, and electrical specification information, see the latest PSoC device datasheets on the web. Application Notes Cypress application notes are an excellent introduction to the wide variety of possible PSoC designs. Development Kits PSoC Development Kits are available online from and through a growing number of regional and global distributors, which include Arrow, Avnet, Digi-Key, Farnell, Future Electronics, and Newark. Training Free PSoC technical training (on demand, webinars, and workshops), which is available online via www.cypress.com, covers a wide variety of topics and skill levels to assist you in your designs. CYPros Consultants Certified PSoC consultants offer everything from technical assis- tance to completed PSoC designs. To contact or become a PSoC consultant go to the CYPros Consultants web site. Solutions Library Visit our growing library of solution focused designs. Here you can find various application designs that include firmware and hardware design files that enable you to complete your designs quickly. Technical Support Technical support – including a searchable Knowledge Base articles and technical forums – is also available online. If you cannot find an answer to your question, call our Technical Support hotline at 1-800-541-4736. |
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