资 源 简 介
HT1647 is a peripheral device specially designed for I/O type C used to expand the displaycapability. The max. display segment ofthe device are 1024 patterns (64 segments and16 commons). It also supports four data bits interface,buzzer sound, Watchdog TImer or TImebase TImer funcTIons. The HT1647 is a memorymapping and multi-function LCD controller.Since the HT1647 can control ECB-type (ElectricallyControlled Birefringence) LCDs in additionto current TN-type (Twisted Nematic) orSTN-type (Super Twisted Nematic) LCDs, itcan support 4-color display as well as 4-levelgray scale display. It displays 4-level gray scaleoutput when the HT1647 drives a TN-type,STN-type LCDs. It displays four color outputwhen the HT1647 drives an ECB-type. HT1647uses PWM (Pulse Width Modulation) technique.The software configuration feature ofthe HT1647 make it suitable for multiple LCDapplications including LCD modules and displaysubsystems. Only six lines (CS, WR,DB0~DB3) are required for the interface between the host controller and the HT1647.
