HD66717

• 5 ×8-dot matrix LCD drive
• Four 12-character lines, 40 segments, and 10 annunciators
• Low-power operation support:
-2.4 to 5.5V (low voltage)
-Double or triple booster for liquid crystal drive voltage
-Electron volume function and voltage-followers for decreasing the direct current flow in the LCD drive bleeder-resistors
-Standby mode and sleep mode
-Displays up to 10 static annunciators
• I²C bus or clock-synchronized serial interface; 4- or 8-bit parallel bus interface
• 60 ×8-bit display data RAM (60 characters max)
• 9,600-bit character generator ROM
-240 characters (5 ×8 dots)
•32 × 5-bit character generator RAM
-4 characters (5 ×8 dots)
• 8 × 5-bit segment RAM
-40 segment-icons and marks max
• 60-segment × 34-common liquid crystal display driver
• Programmable display sizes and duty ratios (see List1)
• Vertical smooth scroll
• Double-height display
• Wide range of instruction functions:
-Display clear, display on/off, icon and mark control, character blink, white-black inverting blinking cursor, icon and mark blink, cursor home, cursor on/off, white-black inverting raster-row
• Hardware reset
• Internal oscillation with an external resistor
• Wide range of LCD drive voltages
-3.0V to 13.0V
• Slim chip with/without bump (for COB) and tape carrier package (TCP)

The HD66717 dot-matrix liquid crystal display controller and driver LSI displays alphanumerics, katakana, hiragana, and symbols. It can be configured to drive a dot-matrix liquid crystal display under the control of an I²C bus, a clock-synchronized serial, or a 4- or 8-bit microprocessor. A single HD66717  is capable of displaying a maximum of four 12-character lines, 40 segments, and 10 annunciators. The HD66717 incorporates all the functions required for driving a dot-matrix liquid crystal display such as display RAM, character generator, and liquid crystal drivers, and a booster for LCD power supply.

The HD66717 provides various functions to reduce the power consumption of an LCD system such as low-voltage operation of  2.4V or less, a booster for generating a maximum of triple LCD drive voltage from the supplied voltage, and voltage-followers for decreasing the direct current flow in the LCD drive bleeder-resistors. Combining these hardware functions with software functions such as standby and sleep modes allows a fine power control. The HD66717, with the above functions, is suitable for any portable battery-driven product requiring long-term driving capabilities and small size.