Revision # 1.70   Modifications made on May 17, 2010

• In the Features and other related sections, the HT6P20A part number was removed.
• The A.C Characteristics section was modified.
• The Package Information section was modified.

Revision # 1.60   Modifications made on July 30, 2009

• In the Features and other related section, all references to the 8 data selection were removed
  
• All references to D0~D7 have been changed to D0~D3.
• In the Functional Description section, the Flowchart was modified.
• The Application Circuits were modified.

Revision # 1.50   Modifications made on February 20, 2009

• The Package Information section was modified.
  　
• The Product Tape and Reel Specifications section was modified.

Revision # 1.40   Modifications made on June 20, 2003

• The HT6P20 were deleted from the Features section, Pin Assignment section and other related sections.
• The Functional description section was modified.

Revision # 1.30   Modifications made on April 10, 2003

• The Pad Assignment diagram and Pad Coordinates table were deleted.

Revision # 1.20   Modifications made on September 25, 2002

• Package Information section was added.

Revision # 1.10   Modifications made on April 17, 2002

• At the Pin Assignment section, the Note was modified.