W81281 View Datasheet(PDF) - Winbond

Part Name

Description

Manufacturer

W81281

USB Keyboard / Device Controller

Winbond 

3

Winbond USB Keyboard/HID Controller

Preliminary

Winbond USB Keyboard/HID Controller

(W81281)

RST IDSEL(P30)

LED0-2(P33-P35)

(x3)

P02SO*

INT

USB SIE

XFRI

...

(x18)

8052

Micro

Endpoints

USB

Transceiver

P1SI* Processor

Power Down

Clock

Control

5V to 3.3V

(x8)

Generator

Watch Dog

Conversion

EFT, LVRST

Timer

*P02SO: P00-P07,P20-P27,SCO16,SCO17

X1

X2

*P1SI:P10-P17

PSCL PSDA

(P32) (P31) External Clock Circuit

VDD

D-

D+

VSS

VBUS

Publication Release Date:

1999

60

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