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HD66732
(Graphics Liquid Crystal Display Controller/Driver Supporting JIS
Level-1 and Level-2 Kanji ROM)
ADE-207-314(Z)
Rev 1.2
Aug, 1999
Description
The HD66732 is a dot-matrix liquid crystal display (LCD) controller and driver LSI that displays 11-by-12
dot Japanese characters consisting of kanji and hiragana according to the Japanese Industrial Standard (JIS)
Level-1 and Level-2 Kanji Set. The HD66732 incorporates the following five functions on a single chip:
(1) display control function for the dot matrix LCD, (2) a display RAM to store character codes, (3) ROM
fonts to support level-1 and level-2 kanji, (4) an LCD driver, and (5) a booster to drive the LCD. A 4-line
10-character kanji display can be easily achieved by receiving character codes (2 bytes/character) from the
microcomputer. The software processing loads on the microcomputer for kanji-font display development
can be greatly reduced, and an external kanji character generator or key scan circuit is not needed. The
character font includes font ROMs of 6,353 kanji from the JIS Level-1 and Level-2 Kanji Set, 285 JIS non-
kanji characters, and 256 half-size alphanumeric characters and symbols. Full-size fonts such as Japanese
kanji and half-size fonts such as alphanumeric characters can be displayed together. In addition, the
HD66732 supports a 120-by-52 dot graphics display function that can display not only characters such as
kanji but also graphics such as drawings or maps.
The HD66732 has various functions to reduce the power consumption of an LCD system, such as low-
voltage operation at 2.4 V, a low-power LCD drive operating amplifier, and a booster to switch the
boosting rate. Combining these hardware functions with software functions such as standby and sleep
modes allows precise power control. The HD66732 is suitable for any battery-driven product requiring
long-term driving capabilities such as cellular phones, pagers, or portable devices.
Features
Dot-matrix liquid crystal display controller/driver supporting the display of kanji from the JIS Level-1
and Level-2 Kanji Set
Kanji display and high-speed font development processing enabled by data transfer of two
bytes/character
4-line 10-character kanji and 120-by-52-dot graphics display
Mark display using 200 monochrome segments (marks) or 40 grayscale segments
Control up to a 4 x 8 (32 key) matrix key scan (at a serial interface)