STMPE801QTR STMicroelectronics

STMPE801 8-bit port expander Xpander logic Features 8 GPIO Operating voltage 1.65V - 3.6V I/O voltage 1.65V-3.6V Interrupt output pin Reset input pin QFN16L Wake up feature on each I/O Up to 2 devices sharing the same bus (1 address line) <1A suspend current Application SO-16 Portable media player, Game console Mobile phone, Smart phone Description The STMPE801 is a GPIO (General Purpose Input / Output) port expander able to interface a main digital ASIC via the two-line bidirectional bus 2 (I C) separate GPIO Expander IC is often used in Mobile-Multimedia platforms to solve the problems of the limited amounts of GPIOs usually available on the Digital Engine. The STMPE801 offers great flexibility as each I/Os is configurable as input, output. This device has been designed very low quiescent current, and includes wake up feature for each I/O, to optimize the power consumption of the IC. Table 1. Device summary Order codes Package Packaging STMPE801QTR QFN16L (2.6mm x 1.8mm) Tape and reel (3000 per reel) STMPE801MTR SO-16 Tape and reel (2500 per reel) July 2007 Rev 4 1/26 www.st.com 26Contents STMPE801 Contents 1 Block diagram 4 2 Pin settings 5 2.1 Pin connection 5 2.2 Pin assignment 6 3 Maximum rating . 7 3.1 Absolute maximum rating 7 3.2 Thermal data . 7 4 Electrical specification . 8 4.1 DC electrical characteristics 8 5 I2C module . 9 5.1 I2C address 9 5.2 I2C features . 10 5.3 Start condition . 11 5.4 Stop condition . 11 5.5 Acknowledge bit 11 5.6 Data input . 11 5.7 Operation modes . 12 5.8 Read operation . 13 5.9 Acknowledgement in read operation 13 5.10 Write operations 13 5.11 General call . 14 6 Turning I2C block OFF and ON . 14 2/26