Revision # 1.90   Modifications made on January 11, 2007

• In the Pin Assignment section, the diagram labels for HT86576/HT86768, 32 SOP were modified.

Revision # 1.80   Modifications made on January 3, 2007

• In the Features and Pin Assignment section a new 44-pin QFP packge type has been added.
  　
• The Selection Table has been modified.
  　
• The VoiceRom address latch information was modified in the Data Memory section.
  　
• The register status in the reset table was modified.
  　
• The bit count in the Voice ROM Data Address Latch counter section was modified.

Revision # 1.70   Modifications made on May 6, 2004

• At the Pin Assignment section, the caption 32 SOP-A was modified to 
  32 SOP-B package.
• At the Pad Description table, the INT description was modified as External interrupt Schmitt trigger input without pull-high resistor.

Revision # 1.60   Modifications made on December 8, 2003

• At the f_OSC - R_OSC table, the V_DD value was changed from 5V to 3V.
• At the HT86072/HT86144/HT86192/HT86384 Characteristics Curve, Frequency vs. V_DD Chart for 3.0 V, the label 4MHz/104kW was changed to 8MHz/104kW and 8MHz/63kW was changed to 4MHz/63kW.

Revision # 1.50   Modifications made on September 22, 2003

• At the Features section and other related sections, the number of I/O pins was changed from 24 to 23.
• At the Block Diagram section and other related sections, Port C was changed as PC0~PC6 and the TMR3 circuitry was modified with its clock source from 32768Hz Crystal connected to XIN and XOUT.
• At the Pin Assignment section, the diagram labels for HT86576/HT86768, 
  32 SOP-A were modified. For the other devices, PC6 is pin-shared with  XIN.
• The Pad Description table was modified.
• Characteristic Curves were added.
• The Application Circuits were modified, with PC0~PC7 changed to PC0~PC6.

Revision # 1.40   Modifications made on August 6, 2003

• At the Voice Control Register section, the description for the DAC circuit in table was modified.

Revision # 1.30   Modifications made on July 4, 2003

• At the Features section and other related section, the 68-pin PLCC package for HT86072/144/192/384 was replaced with 100-pin QFP package.

Revision # 1.20   Modifications made on June 6, 2003

• HT86576/768 devices were added to this series.
• The LVR function was deleted from the Features section and other related sections.
• 28-pin SOP package was added for the HT86072/144/192/384 at the Features section and other related sections.
• The Application Circuit diagrams were modified.
• At the Package Information section, 28/32-pin SOP and 100-pin QFP were added.
• Product Tape and Reel Specifications section was added.

Revision # 1.10   Modifications made on January 16, 2003

• The Selection Table was modified, with HT86A00 changed to HT86768, which will be available by 1Q, 2003 as indicated on the Note below.
• At the Pin Assignment, Pad Assignment, Pad Description table and other related sections, the Pin names AUD1 and AUD0 were changed to AUD and TEST respectively.
• At the Absolute Maximum Ratings section, the Supply Voltage range of 2.4V to 5.2V was changed to V_SS-0.3V to V_SS+5.5V.