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PDF HD66710A00TF Data sheet ( Hoja de datos )
| Número de pieza | HD66710A00TF | |
| Descripción | (Dot Matrix Liquid Crystal Display Controller/Driver) | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD66710
(Dot Matrix Liquid Crystal Display Controller/Driver)
Description
The HD66710 dot-matrix liquid crystal 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 microprocessor. 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.
A single HD66710 is capable of displaying a single16-character line, two 16-character lines, or up to four
8-character lines.
The HD66710 software is upwardly compatible with the LCD-II (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.
The low voltage version (2.7V) of the HD66710, combined with a low power mode, is suitable for any
portable battery-driven product requiring low power dissipation.
Features
• 5 × 8 dot matrix possible
• Low power operation support:
2.7V to 5.5V (low voltage)
• Booster for liquid crystal voltage
Two/three times (13V max.)
• Wide range of liquid crystal display driver voltage
3.0V to 13V
• 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.)
291
1 page  
HD66710
HD66710 Block Diagram
Reset circuit
ACL
OSC1 OSC2
CPG
EXT
Timing generator
Instruction register
(I R)
Instruction
decoder
7
8
RS
R/W
E
MPU
interface
7
Address counter
7
Display data RAM
(DDRAM)
80 × 8 bits
8
DB4–DB7
DB3–DB0
Input/
output
buffer
8 Data
register
(DR)
Busy
flag
8
3
8
8
7
8
33-bit
shift
register
Common
signal
driver
COM1–
COM33
40-bit
shift
register
40-bit
latch
circuit
SEG1–
SEG36
Segment
signal
driver
SEG37/CL1
SEG38/CL2
SEG39/D
SEG40/M
Segment
RAM
(SGRAM)
Character
generator RAM
(CGRAM)
Character
generator ROM
(CGROM)
Cursor and
bling
controller
LCD drive
voltage
selector
Vci
8 bytes
64 bytes
9,600 bytes
C1
C2
V5OUT2
V5OUT3
VCC
GND
Booster
5
5/6
Parallel/serial
converter
and attribute circuit
V1 V2 V3 V4 V5
295
5 Page 
HD66710
Table 1 Pin Functional Description (cont)
Signal
VCC, GND
OSC1, OSC2
Vci
V5OUT2
V5OUT3
C1/C2
TEST
Device
I/O Interfaced with Function
— Power supply
— Oscillation
resistor clock
VCC: +2.7V to 5.5V, GND: 0V
When CR oscillation is performed, a resistor must be
connected externally. When the pin input is an external
clock, it must be input to OSC1.
I—
O V5 pin/
Booster
capacitance
Input voltage to the booster, from which the liquid crystal
display drive voltage is generated.
Vci is reference voltage and power supply for the booster.
Vci = 1.0V to 5.0V ≤ VCC
Voltage input to the Vci pin is boosted twice and output
When the voltage is boosted three times, the same capacity
as that of C1–C2 should be connected.
O V5 pin
Voltage input to the Vci pin is boosted three times and
output.
— Booster
capacitance
External capacitance should be connected when using the
booster.
I—
Test pin. Should be wired to ground.
301
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet HD66710A00TF.PDF ] | |
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