LM8500, LM8 Datasheet - National Semiconductor

LM8500, LM8, Four Wire Resistive Touchscreen Controller

LM8300/LM8400/LM8500 Four Wire Resistive Touchscreen Controller with Brownout PRELIMINARY October 2002 LM8300/LM8400/LM8500 Four Wire Resistive Touc

Features

* KEY FEATURES n Supports 4 wire resistive touch panels n Low power standby current typically less than 2 µA at 5.5V n Maximum speed of 500 coordinate pairs per second n Automatic wake up and return to standby n 10 bit A/D n On-chip touch screen current drivers - no external driver required n UART int

Applications

* n Personal Digital Assistants n Smart Hand-Held Devices n Touch Screen Monitors n Point-of-Sales Terminals n KIOSK n Pagers n Cell Phones COP8™ is a trademark of National Semiconductor Corporation. © 2002 National Semiconductor Corporation DS200372 www. national. com LM8300/LM8400/LM8500 Block D

LM8-400.pdf