TP8815

The TP8815 is to provide a reliable and low-cost solution of transferring mouse data to the host system through a USB environment and accept a report information from host system to indicate e-mail coming. This USB e-mail Mouse controller has been developed for applications requiring a low speed interface to the USB. It completely conforms to the USB 1.5 Mbps specification, version 1 .1 and USB HID specification, version 1.1.TP8815 build in a RC Oscillator,so it doesn't need any external crystal for whole system. This e-mail mouse controller can interface five key-switches and six photo-couplers direct to USB and up to three indicator ELED to turn on/off an LED in order to indicate e-mail received by your mail server. Key debouncing circuit is provided to prevent false entry and improve the accuracy, and the noise immunity circuits to eliminate this noise.

Features of the TP8815 are:(1)built-in 6MHz RC oscillator or 6MHz external oscillator; (2)fully compliant with the USB 1.1 specification, supports control and interrupt transactions; (3)fully compliant with the HID 1 .1 specification, supports remote wakeup and USB mouse boot protocol feature; (4)data transfer at USB low speed, Supports 1 device address and 2 endpoints; (5)integrated USB transceiver & 1.5Mbps USB serial interface engine; (6)improved output drivers to reduce EMI; (7)single 5V power supply with DC supply voltage from 4.4v to 5.25v; (8)internal power-on-reset (POR); (9)built-in noise immunity circuit; (10)five key-switches and six photo-couples inputs; (11)both key-press and key release de-bounce intervals are 11ms.

The absolute maximum ratings of the TP8815 can be summarized as:(1)supply voltage:4.5 to 5.25V;(2)power dissipation:500mW;(3)storage temperature:-65 to 150;(4)temperature under bias:0 to 50.The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product characteristics. Before ordering, purchasers are advised to contact the Sensitron Semiconductor sales department for the latest version of the datasheet(s).In cases where extremely high reliability is required (such as use in nuclear power control, aerospace and aviation, traffic equipment,medical equipment, and safety equipment), safety should be ensured by using semiconductor devices that feature assured safety or by means of users' fail-safe precautions or other arrangement.In no event shall Sensitron Semiconductor be liable for any damages that may result from an accident or any other cause during operation of the user's units according to the datasheet(s). Sensitron Semiconductor assumes no responsibility for any intellectual property claims or any other problems that may result from applications of information, products or circuits described in the datasheets.