W81282F Datasheet, PDF (5/18 Pages) Winbond – USB Keyboard Controller with 4 Ports Hub

W81282F
PRELIMINARY
3. FEATURES
• Full compliance with USB spec Rev 1.1 and HID Class Definition Rev 1.0
• Embedded microprocessor--8052 ( 6K ROM + 256 Byte RAM)
• Support auto-detected two power source mode between bus power mode and self power mode.
• 12-Mhz crystal/oscillator input to lower EMI
• Support Suspend and Resume operation
• Support ACPI features
• Four downstream ports with per port over-current protection
• Single 5V supplied with embedded 5V-3.3V regulator
• Provides the external pull-up resistor control for the up-stream connection.
• Per-port/Global power control optional
• Built-in ESD/EFT protection circuit
• Support 21 X 8 keyboard matrix
• Support consumer control function for multi-media
• Support optional EEPROM for vendor ID, device ID, and KB matrix down load
• Support encoder input for audio volume control
• Provide the external pull-up resistor control for the up-stream connect
• 100-pin PQFP
• 5V CMOS device
Publication Release Date: Aug. 1999
-2-
Revision 0.5