TCA8424 Overview
This 128 key scan device is specifically targeted towards end equipment that runs on Windows 8 operating system. The device is fully pliant with the HID over I2C specification defined (ver 1.0) defined by Microsoft. The HID and report descriptors are hard coded into the device so that they don’t need to be programmed at production.
TCA8424 Key Features
- Operating Power-Supply Voltage Range of 1.65V to 3.6V
- Supports FM+ I2C Operation up to 1MHz
- Can Support up to 128 (8x16) Key Scan
- Internal Power-On-Reset
- Open Drain Open Drain Active Low INT Output
- Noise Filter on SCL/SDA and Inputs
- Open Drain Outputs Can Sink up to 12mA
- Hardware Coded HID and REPORT Descriptors
- Available With Preprogrammed Keyboard Map
- Software Reset per HID Over I2C Standard