【通信应用笔记】STMPE801只 - 硬件接口指南 AN2466 Application note STMPE801 - Hardware Interface guide Introduction STMPE801 is an eight-bit port expander that can be interfaced to the main digital ASIC or processor via the two-line bidirectional I2C bus. The digital engines in mobile multimedia platforms usually come with a limited number of I/Os. The port expander ICs can be used to increase the number of I/Os or control signals in such applications. STMPE801 can be used in advanced digital platforms such as: ● Portable media players ……