Basic Information Functional Description Application Description Points to Note Others

Functional Description

　

Question 1

What are the differences between the HT82M23A/B/C, HT82M21A and the HT82M22A?

Answer

  • Because the HT82M21A and the HT82M22A are two different bodies. Because the HT82M23A/B/C is a single body, a pin is used to select the function, therefore by knowing the device information, the user can chose from 3 functions.

  • HT82M23A and the HT82M22A are pin compatible.

    Part No. Interface Mode Package
    HT82M23A USB+PS/2 Windows 2000 20DIP/SOP
    HT82M22A USB+PS/2 Windows 2000 20DIP/SOP

 

  • HT82M23B/C and the HT82M21A are pin compatible.

    Part No. Interface Mode Package
    HT82M23B USB+PS/2 3 KEY 18DIP/SOP
    HT82M23C USB only 3 KEY 18DIP/SOP
    HT82M21A USB+PS/2 3 KEY 18DIP/SOP

Points to Note

　

Question 1

Are the HT82M23A/B/C and HT82M21A﹐HT82M22A compatible, also what are their differences?

Answer

  • Their bodies are different. The HT82M21A and the HT82M22A have different bodies. Also there are no OTP type devices for evaluation. The HT82M23A/B/C is a single body, which can use the HT82M99E OTP device for evaluation.

  • Because the bodies are different, therefore the pad locations are also different.