
HD66732
4
LCD Specification Comparison for Kanji Display
External Kanji ROM Type
Items
Kanji display area
Kanji character display
Half-size alphanumeric character display
Graphics display sizes
Multiplexing icons
Key scan control
General output port
Operating power voltages
Liquid crystal drive voltages
Serial bus
Parallel bus
Expansion driver control
Liquid crystal drive duty ratios
Liquid crystal drive biases
Liquid crystal drive waveforms
Liquid crystal voltage booster
HD66724
72 x 24 dots
—
12 characters x 3 lines
72 x 26 dots
144
8 x 4
3
1.8 V to 5.5 V
3 V to 6 V
Clock-synchronized serial
4 bits, 8 bits
Impossible
1/2, 10, 18, 26
1/4 to 1/6.5
B
Single, double or triple
HD66725
96 x 24 dots
—
16 characters x 3 lines
96 x 26 dots
192
8 x 4
3
1.8 V to 5.5 V
3 V to 6 V
Clock-synchronized serial
4 bits, 8 bits
Impossible
1/2, 10, 18, 26
1/4 to 1/6.5
B
Single, double, or triple
HD66726
96 x 40 dots
—
16 characters x 5 lines
96 x 42 dots
192
8 x 4
3
1.8 V to 5.5 V
4.5 V to 11 V
Clock-synchronized serial
4 bits, 8 bits
Impossible
1/2, 10, 18, 26, 34, 42
1/2 to 1/8
B
Single, double, triple, or
quadruple
Incorporated (external)
Incorporated
Incorporated
Impossible
Raster-row unit
Yes
80 x 8
21 k
Alphanumeric character +
kana
480 x 8
96 x 8
432
64
6 x 8
External resistor (50 kHz)
Bleeder-resistor for liquid crystal drive
Liquid crystal drive operational amplifier
Contrast adjuster
Horizontal smooth scroll
Vertical smooth scroll
Double-height display
DDRAM
CGROM
Incorporated font
Incorporated (external)
Incorporated
Incorporated
3-dot unit
Raster-row unit
Yes
80 x 8
21 k
Alphanumeric character +
kana
384 x 8
72 x 8
432
64
6 x 8
External resistor,
incorporated (32 kHz)
External
Partial display off
Display off
Oscillation off
Liquid crystal power off
Key wake-up interrupt
SEG, COM
—
TCP
—
Yes
146
10.34 x 2.51
80
μ
m
Incorporated (external)
Incorporated
Incorporated
3-dot unit
Raster-row unit
Yes
80 x 8
21 k
Alphanumeric character +
kana
384 x 8
96 x 8
432
64
6 x 8
External resistor,
incorporated (32 kHz)
External
Partial display off
Display off
Oscillation off
Liquid crystal power off
Key wake-up interrupt
SEG, COM
—
TCP
—
Yes
170
10.97 x 2.51
80
μ
m
CGRAM
SEGRAM
Number of CGROM fonts
Number of CGRAM fonts
Font sizes
R-C oscillation resistor/
oscillation frequency
Reset function
Low power control
External
Partial display off
Display off
Oscillation off
Liquid crystal power off
Key wake-up interrupt
SEG, COM
—
TCP
—
Yes
185
13.13 x 2.51
100
μ
m
SEG/COM direction switching
QFP package
TCP package
Bare chip (without bumps)
Bumped chip
Number of pins
Chip sizes
Pad (bump) intervals