W81C280

Features: Complying with USB spec. Rev.1.0 and HID Class Rev. 1.0Supporting one device address and five endpoints (one Control transfer, four Interrupt transfer)Implementing USB keyboard with PS/2 mouse connection Supporting 8-bit sense (row) input with wakeup interrupt on falling eage, internal ...

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W81C280 Picture
SeekIC No. : 004545078 Detail

W81C280: Features: Complying with USB spec. Rev.1.0 and HID Class Rev. 1.0Supporting one device address and five endpoints (one Control transfer, four Interrupt transfer)Implementing USB keyboard with PS/2 m...

floor Price/Ceiling Price

Part Number:
W81C280
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/3/28

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Product Details

Description



Features:

 Complying with USB spec. Rev.1.0 and HID Class Rev. 1.0
 Supporting one device address and five endpoints (one Control transfer, four Interrupt transfer)
 Implementing USB keyboard with PS/2 mouse connection Supporting
   8-bit sense (row) input with wakeup interrupt on falling eage, internal pull-ups
 Supporting 18-bit drive (column) output, open drain with pull-ups
 8-bit 8051 compatible CPU core
 6K-byte ROM
 256-byte SRAM
 3 direct drive LED outputs with internal series resisters, Isink= 20 mA
 Supporting warm reset
 Supporting external serial EEPROM access
 40/42-pin DIP
  5V CMOS Device



Pinout

  Connection Diagram


Description

 

W81C280 is a single-chip microcontroller with Universal Serial Bus (USB) interface for keyboard application, it includes the core of Winbond's 8-bit microprocessor W78C52. It implements a standard PC keyboard and enables connection to host system through low- speed (1.5Mhz) or high speed(12Mhz) . It complies with USB Specification Revision 1.0 and HID Class Definition Revision 1.0.

W81C280 supports an 18 X 8 keyboard scan matrix wihich allows suspend wakeup, and also provides a port for PS/2 mouse. It consists of an 8051 compatible CPU core, a 6K-byte ROM, a 256-byte SRAM, and three 16-bit programmable timers.

W81C280 supports one device address and five endpoints, one for Control transfer and four for Interrupt transfer. Through modification of firmware of W78C52, it can be used for multi-function device design, such as USB-IR receiver and any High-Speed(12Mhz)/Slow-Speed(1.5Mhz) USB peripheral device controller.




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