General Description
The HT6513B is specially designed for PnP compatible mouse controller. Capable of driving up
to 3 key-switches and 4 photo-couplers (optomechanical mouse) directly into a standard RS-232C line, and it can be operated without an external power supply. It is compatible with both M+ and Mouse systems with false entries being prevented by internal debounce circuits.

FEATUREs

Supports optomechanical mouse

In M+ mode, compatible with Plug and Play

Fit a defined Windows 95 class name in M+ mode

Uses 32.768kHZ crystal

Crystal oscillator circuits on chip

1200/9600 baud rate serial output

Power directly from RS-232C without external power supply

Three key-switches and four photo-coupler inputs

Compatible with both M+ and Mouse systems

Microsoft system mode with middle key supported

Mouse mode (M+/PC) changeable during power on reset

RXDwith heavy NMOS open drain output