HD66727 Datasheet, PDF (4/97 Pages) Hitachi Semiconductor – Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function

HD66727
LCD-II Family Comparison
Item
Power supply voltage
LCD-II
(HD44780U)
2.7V to 5.5V
Liquid crystal drive
voltage
Maximum display -
characters per chip
3.0 to 11.0V
8 characters ×
2 lines
Segment display
Display duty ratio
CGROM
CGRAM
DDRAM
SEGRAM
Segment signals
Common signals
Liquid crystal drive
waveform
Clock source
Rf oscillation frequency
Liquid crystal voltage
booster circuit
Liquid crystal drive
operational amplifier
Bleeder-resistor for liquid
crystal drive
Liquid crystal contrast
adjuster
Key scan circuit
Extension driver control
signal
None
1/8, 1/11, and
1/16
9,920 bits
(208 5-×-8 dot
characters and
32 5-×-10 dot
characters)
64 bytes
80 bytes
None
40
16
A
External resistor
or external clock
270 kHz ± 30%
None
None
External
None
None
Independent
control signal
Reset function
Horizontal smooth scroll
Internal reset
circuit
Impossible
Vertical smooth scroll
Impossible
Number of displayed lines 1 or 2
Low power control
None
Bus interface
4 or 8 bits
Package
80-pin QFP1420
80-pin TQFP1414
80-pin bare chip
HD66702R
5V ± 10% (standard)
2.7 V to 5.5V
(low voltage)
3.0V to 8.3V
HD66710
2.7V to 5.5V
3.0 to 13.0V
HD66712U
2.7V to 5.5V
2.7 to 11.0V
20 characters ×
2 lines
None
1/8, 1/11, and
1/16
7,200 bits
(160 5-×-7 dot
characters and
32 5-×-10 dot
characters)
64 bytes
80 bytes
None
100
16
B
16 characters ×
2 lines/
8 characters ×
4 lines
40
1/17 and 1/33
9,600 bits
(240 5-×-8 dot
characters)
64 bytes
80 bytes
8 bytes
40
33
B
24 characters ×
2 lines/
12 characters ×
4 lines
60 (extended to 80)
1/17 and 1/33
9,600 bits
(240 5-×-8 dot
characters)
64 bytes
80 bytes
16 bytes
60
34
B
External resistor
or external clock
320 kHz ± 30%
None
None
External resistor
or external clock
270 kHz ± 30%
Double or triple
booster circuit
None
External resistor
or external clock
270 kHz ± 30%
Double or triple
booster circuit
None
External
External
External
None
None
None
None
Independent
control signal
Internal reset
circuit
Impossible
Impossible
1 or 2
None
4 or 8 bits
144-pin FQFP2020
144-pin bare chip
None
Used in common
with a driver
output pin
Internal reset
circuit
Dot unit
Impossible
1, 2, or 4
Low power mode
4 or 8 bits
100-pin QFP1420
100-pin TQFP1414
100-pin bare chip
None
Independent
control signal
Internal reset
circuit or reset input
Dot unit and
line unit
Impossible
1, 2, or 4
Low power mode
Serial, 4, or 8 bits
128-pin TCP
128-pin bare chip
4