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ST
Sitronix
ST7038
Dot Matrix LCD Controller/Driver
Ver 1.1
1/61
2007/01/25
FEATURES
l
5 x 8 dot matrix possible
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Support low voltage single power operation:
Ø
VDD, VDD2: 1.8 to 3.3V (typical)
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LCD Voltage Operation Range (V0/Vout)
Ø
Programmable V0: 3 to 7V(V0)
Ø
External power applied: Max. 12V(Vout)
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Interface
Ø
6800-4bit / 8bit interface
Ø
8080-4bit / 8bit interface
Ø
3-line serial interface
Ø
4-line serial interface
Ø
I
2
C interface
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Support display mode:
Ø
8-COM x 100-SEG and 80 ICON
Ø
16-COM x 100-SEG and 80 ICON
Ø
24-COM x 80-SEG and 80 ICON
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10,240-bit Character Generator ROM
(CGROM) stores 256 character fonts
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64 x 8-bit Character Generator RAM
(CGRAM)
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80 x 8-bit Display RAM (80 characters max.)
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16 x 5 bit ICON RAM
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Variable instruction functions:
clear display, return home, display ON/OFF,
cursor ON/OFF, character blink, cursor shift,
display shift, double height font, ICON control
and character generation RAM
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Reset circuit through an external reset pin
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Internal oscillator or external clock
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Built-in low power consumption voltage
booster, regulator and follower circuit
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Built-in high-accuracy voltage regulator:
Ø
Programmable output range: 3~7V
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COM/SEG direction selectable by instruction
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Selectable CGRAM/CGROM size
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Package Type: COG
GENERAL DESCRIPTION
ST7038 dot-matrix liquid crystal display controller can
display alphanumeric, Japanese kana characters and
symbols. It can be configured to drive a dot-matrix liquid
crystal display under the control of a microprocessor with
4/8-bit 6800-series or 8080-series, 3/4-line serial or fast I
2
C
interface. Since all the functions (such as display RAM,
character generator ROM/RAM and liquid crystal driver)
required for driving a dot-matrix liquid crystal display are
internally embedded in this chip, a minimal system can be
used with this controller/driver.
The Character Generator ROM of ST7038 has 256 5x8dot
cells and stores 256 different character fonts (5x8dot).
ST7038 is suitable for low voltage supply (1.8V to 3.3V) and
is perfectly suitable for any portable product which is driven
by the battery and requires low power consumption.
The display resolution of ST7038 dot-matrix LCD driver can
be either 1-line x 20 characters, 2-line x 20 characters or
3-line x 16 characters with 80-bit ICON.
ST7038 works alone without extra cascaded drivers.
Product Name
Character generator ROM Size
Support Character
ST7038-0B
256
English / Europe / Japan
ST7038
6800-4bit / 8bit interface
8080-4bit / 8bit interface
3-line/4-line serial interface
(without I
2
C interface)
ST7038i
I
2
C interface