HT1620/HT1620G    RAM Mapping 32x4 LCD Controller for I/O MCU

Revision # 2.00    Modifications made on April 29, 2011

• The A.C. Characteristics section was modified.
  
• The Package Information section was modified.

Revision # 1.90    Modifications made on September 2, 2010

• The Gold Bump part number has been added to the datasheet header.

Revision # 1.80    Modifications made on July 27, 2009

• In the Features section, the package information was modified.
  
• In the Pad Assignment section, the Bump information was added.

Revision # 1.70    Modifications made on June 9, 2009

• In the A.C. Characteristics section, the t_OFF and t_SR entries and other related Note description & Figure were added.

Revision # 1.60    Modifications made on December 3, 2008

• In the D.C. Characteristics section, the I_OH1, I_OH2 and I_OH3 entries were modified.
  
• In the A.C. Characteristics section, the f_TONE entries were modified.

Revision # 1.51    Modifications made on September 25, 2008

• A Patent Notice has been added to the datasheet.

Revision # 1.50    Modifications made on June 6, 2008

• The D.C. Characteristics table was modified.

• The A.C. Characteristics table was modified.

Revision # 1.40    Modifications made on March 17, 2008

• In the Features, Pin Assignment and other related sections, the package types were modified.

Revision # 1.30    Modifications made on March 27, 2007

• In the D.C. Characteristics table, the IDD & ISTB conditions were modified.

Revision # 1.20    Modifications made on September 22, 2006

• The D.C. Characteristics Table has been modified.

Revision # 1.10   Modifications made on August 16, 2004

• At the Command Summary table, the Command Code for LCD OFF was changed from 0000-0001-X to 0000-0010-X and also for TIMER EN  from 0000-0010-X to 0000-0110-X.
• Package Information section was added.

Revision # 1.00   This was posted on January 10, 2001

• Two columns for HT1627 and HT16270 were deleted from the Selection Table.