EXHIBIT 10.9

                                PROMISSORY NOTE
$125,000.00                                                      Santa Clara, CA

                                                                May 11, 2000

     FOR VALUE RECEIVED, Albert Lee promises to pay to Computer Access
Technology Corporation, a California corporation (the "Company"), or order, the
principal sum of One Hundred Twenty-Five Thousand Dollars ($125,000.00),
together with interest on the unpaid principal hereof from the date hereof at
the rate of 6.42% per annum.

     Principal and interest shall be due and payable on May 11, 2002. Payment of
principal and interest shall be made in lawful money of the United States of
America.

     The undersigned may at any time prepay all or any portion of the principal
or interest owing hereunder.

     This Note is secured in part by a pledge of the Company's Common Stock
under the terms of a Security Agreement of even date herewith and is subject to
all the provisions thereof.

     The holder of this Note shall have full recourse against the undersigned,
and shall not be required to proceed against the collateral securing this Note
in the event of default.

     In the event the undersigned shall cease to be an employee, director or
consultant of the Company for any reason, this Note shall, at the option of the
Company, be accelerated, and the whole unpaid balance on this Note of principal
and accrued interest shall be immediately due and payable.

     Should any action be instituted for the collection of this Note, the
reasonable costs and attorneys' fees therein of the holder shall be paid by the
undersigned.

                                                    /s/ Albert Lee
                                                    -----------------
                                                    Albert Lee