HD66710 (LCD-II/F8)
(Dot Matrix Liquid
Crystal Display Controller/Driver)
Description
Features
The LCD-II/F8 (HD66710) dot-matrix liquid crys-
tal display controller and driver LSI displays
alphanumerics, numbers, and symbols. It can be
configured to drive a dot-matrix liquid crystal
display under the control of a 4- or 8-bit micro-
processor. Since all the functions such as display
RAM, character generator, and liquid crystal
driver, required for driving a dot-matrix liquid
crystal display are internally provided on one chip,
a minimum system can be interfaced with this
controller/driver.
• 5 × 8 dot matrix possible
• Low power operation support:
— 2.7 V to 5.5 V (low voltage)
• Booster for liquid crystal voltage
— Two/three times (13 V max.)
• Wide range of liquid crystal display driver voltage
— 3.0 V to 13 V
• Extension driver interface
• High-speed MPU bus interface
(2 MHz at 5-V operation)
• 4-bit or 8-bit MPU interface capability
• 80 × 8-bit display RAM (80 characters max.)
• 9,600-bit character generator ROM
— 240 characters (5 × 8 dot)
• 64 × 8-bit character generator RAM
— 8 characters (5 × 8 dot)
A single LCD-II/F8 is capable of displaying a
single16-character line, two 16-character lines, or
up to four 8-character lines.
The LCD-II/F8 software is upwardly compatible
with the LCDII (HD44780) which allows the user
to easily replace an LCD-II with an HD66710. In
addition, the HD66710 is equipped with functions
such as segment displays for icon marks, a 4-line
display mode, and a horizontal smooth scroll, and
thus supports various display forms. This achieves
various display forms. The HD66710 character
generator ROM is extended to generate 240 5 × 8
dot characters.
• 8 × 8-bit segment RAM
— 40-segment icon mark
• 33-common × 40-segment liquid crystal display
driver
• Programmable duty cycle
(See list 1)
• Wide range of instruction functions:
— Functions compatible with LCD-II: Display
clear, cursor home, display on/off, cursor
on/off, display character blink, cursor shift,
display shift
— Additional functions: Icon mark control,
4-line display, horizontal smooth scroll,
6-dot character width control, white-black
inverting blinking cursor
The low voltage version (2.7 V) of the HD66710,
combined with a low power mode, is suitable for
any portable battery-driven product requiring low
power dissipation.
• Software upwardly compatible with HD44780
• Automatic reset circuit that initializes the con-
troller/driver after power on
• Internal oscillator with an external resistor
• Low power consumption
• QFP1420-100 pin, TQFP1414-100 pin bare-chip