Description

The SC84510 Scrolling Mouse Controller is specially designed to control PS/2 mouse device. This single chip can interface three key switches four photocouples plus x-axis direct to 8042 controller. SC84510 can receive command and echo status or data format which are compatible with IBM PS/2 mode mouse. Key debouncing circuit is provided to prevent false entry and improve the accuracy.

Specifications and features

• Using 50k ±5% resistor for RC oscillation.
• Compatible with legacy PS/2 mouse.
• Compatible with Microsoft scrolling mouse.
• Built-in noise immunity circuit.
• Built-in current comparator for photocouples input.
• Built-in three steps dynamic input impedance.
• Three key-switches and four photocouples inputs.
• Both key-press and key-release debounce interval 12 ms.
• The sampling rate of motion detector is about 65KHz.
• Low power dissipation.
• Six types Z direction input:
  1. Photo couples input. (Z/1)
  2. Key-switches input.
  3. Voltage-sensing input.
  4. Mechanical input. (Z/1)
  5. Photo couples input. (Z/4)
  6. Mechanical input. (Z/2)

Application Scenarios

The SC84510 Scrolling Mouse Controller can be used in various applications that require the control of a PS/2 mouse device. It is compatible with legacy PS/2 mice as well as Microsoft scrolling mice. With its built-in noise immunity circuit and current comparator for photocouples input, it ensures accurate and reliable performance. The key debouncing circuit prevents false entry, making it suitable for applications where accuracy is crucial.

Comparison

- Compatible with legacy PS/2 mouse

- Compatible with Microsoft scrolling mouse

- Built-in noise immunity circuit

- Built-in current comparator for photocouples input

- Low power dissipation

- Key debouncing interval may cause slight delay in response time