ST7066 Datasheet PDF - Sitronix
| Part Number | ST7066 | |
| Description | Dot Matrix LCD Controller/Driver | |
| Manufacturers | Sitronix | |
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ST
Sitronix
ST7066
Dot Matrix LCD Controller/Driver
Features
!" 5 x 8 and 5 x 11 dot matrix possible
!" Low power operation support:
-- 2.7 to 5.5V
!" Wide range of LCD driver power
-- 3.0 to 11V
!" Correspond to high speed MPU bus interface
-- 2 MHz (when VCC = 5V)
!" 4-bit or 8-bit MPU interface enabled
!" 80 x 8-bit display RAM (80 characters max.)
!" 9,920-bit character generator ROM for a total of
240 character fonts
-- 208 character fonts (5 x 8 dot)
-- 32 character fonts (5 x 11 dot)
!" 64 x 8-bit character generator RAM
-- 8 character fonts (5 x 8 dot)
-- 4 character fonts (5 x 11 dot)
!" 16-common x 40-segment liquid crystal display
driver
!" Programmable duty cycles
-- 1/8 for one line of 5 x 8 dots with cursor
-- 1/11 for one line of 5 x 11 dots & cursor
-- 1/16 for two lines of 5 x 8 dots & cursor
!" Wide range of instruction functions:
Display clear, cursor home, display on/off,
cursor on/off, display character blink, cursor
shift, display shift
!" Pin function compatibility with HD44780,
KS0066 and SED1278
!" Automatic reset circuit that initializes the
controller/driver after power on
!" Internal oscillator with external resistors
!" Low power consumption
!" QFP80 and Bare Chip available
Description
The ST7066 dot-matrix liquid crystal display
controller and driver LSI displays alphanumeric,
Japanese kana characters, 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 minimal system can
be interfaced with this controller/driver.
The ST7066 has pin function compatibility with the
HD44780, KS0066U and SED1278 that allows the
user to easily replace it with an ST7066. The ST7066
character generator ROM is extended to generate
208 5 x 8 dot character fonts and 32 5 x 11 dot
character fonts for a total of 240 different character
fonts. The low power supply (2.7V to 5.5V) of the
ST7066 is suitable for any portable battery-driven
product requiring low power dissipation.
The ST7066 LCD driver consists of 16 common
signal drivers and 40 segment signal drivers which
can extend display size by cascading segment driver
ST7065 or ST7063. The maximum display size can
be either 80 characters in 1-line display or 40
characters in 2-line display. A single ST7066 can
display up to one 8-character line or two 8-character
lines.
Product Name
ST7066-0A
ST7066-0B
Support Character
English / Japan
English / European
V1.2
1 2000/6/13
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ST7066
Pin Functions
NAME
RS
NUMBER I/O
1I
R/W
E
DB4 to DB7
1I
1I
4 I/O
DB0 to DB3
CL1
CL2
M
D
4 I/O
1O
1O
1O
1O
COM1 to COM16 16
O
SEG1 to SEG40
V1 to V5
VCC , GND
OSC1, OSC2
40
5
2
2
O
-
-
INTERFACED WITH
FUNCTION
MPU
MPU
Select registers.
0: Instruction register (for write) Busy flag:
address counter (for read)
1: Data register (for write and read)
Select read or write.
0: Write
1: Read
MPU
MPU
MPU
Starts data read/write.
Four high order bi-directional tristate data bus
pins. Used for data transfer and receive
between the MPU and the ST7066. DB7 can
be used as a busy flag.
Four low order bi-directional tristate data bus
pins. Used for data transfer and receive
between the MPU and the ST7066.
These pins are not used during 4-bit operation.
Extension driver
Clock to latch serial data D sent to the
extension driver
Extension driver
Extension driver
Extension driver
LCD
Clock to shift serial data D
Switch signal for converting the liquid crystal
drive waveform to AC
Character pattern data corresponding to each
segment signal
Common signals that are not used are changed
to non-selection waveform. COM9 to COM16
are non-selection waveforms at 1/8 duty factor
and COM12 to COM16 are non-selection
waveforms at 1/11 duty factor.
LCD
Power supply
Segment signals
Power supply for LCD drive
VCC - V5 = 11 V (Max)
Power supply
Oscillation
resistor clock
VCC : 2.7V to 5.5V, GND: 0V
When crystal oscillation is performed, a resistor
must be connected externally. When the pin
input is an external clock, it must be input to OSC1.
Note:
1. Vcc>=V1>=V2>=V3>=V4>=V5 must be maintained
2. Two clock options:
R=91K
(Vcc=5V)
R=75K
OSC1
1
OSC2
1
R
Clock
input
OSC1
1
OSC2
1
V1.2
5 2000/6/13
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ST7066 electronic component. |
| Information | Total 29 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Product Image and Detail view |  1. Matrix LCD Controller / Driver [ Learn More ] | |
| Download | [ ST7066.PDF Datasheet ] | |
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