HT46RB50 A/D Type USB 8-Bit OTP MCU Revision # 1.50 The Power on Reset Characteristics section was added. Revision # 1.40 Modifications made on July 28, 2014 Modifications made on February 23, 2012 In the Feature section, the USB bus operating voltage was added and the original USB 1.1 has now been replaced with USB 2.0. In the Pin Description section, the AVDD pin description was modified. In the D.C. Characteristics section, the VUSB specification was added. Revision # 1.30 Modifications made on October 26, 2007 The Technical Document section was modified. In the Oscillator Configuration section the System Oscillator diagram was modified. In the Reset Section the Reset Circuit diagram was modified. The Application Circuits section was modified. The Instruction Set section was modified. The Instruction Definition section was modified. Revision # 1.20 The Execution Flow diagram was modified. Revision # 1.10 Modifications made on November 1, 2006 Modifications made on September 7, 2006 The registers status in the reset table has been modified. Revision # 1.00 This was posted on August 16, 2006