ST
Sitronix
Main Features
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Operation Voltage Range:
Ø
2.7V to 5.5V
Support 8-bit, 4-bit and serial bus MPU interface
64 x 16-bit display RAM (DDRAM)
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Supports 16 words x 4 lines (Max)
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LCD display range 16 words x 2 lines
64 x 256-bit Graphic Display RAM (GDRAM)
2M-bits Character Generation ROM (CGROM):
Support 8192 Chinese words (16x16 dot matrix)
16K-bit half-width Character Generation ROM
(HCGROM):
Supports 126 characters (16x8 dot matrix)
32-common x 64-segment (2 lines of character)
LCD drivers
Automatic power on reset (POR)
External reset pin (XRESET)
With the extension segment drivers, the display
area can up to 16x2 lines
Built-in RC oscillator:
Frequency is adjusted by an external resistor
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ST7920
Chinese Fonts built in LCD controller/driver
Low power consumption design
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Normal mode (450uA Typ VDD=5V)
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Standby mode (30uA Max VDD=5V)
VLCD (V0 to V
SS
): max 7V
Graphic and character mixed display mode
Multiple instructions:
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Display Clear
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Return Home
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Display ON/OFF
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Cursor ON/OFF
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Display Character Blink
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Cursor Shift
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Display Shift
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Vertical Line Scroll
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Reverse Display (by line)
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Standby Mode
Built-in voltage booster (2 times)
VOUT: max 7V
1/33 Duty (with ICON)
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Function Description
ST7920 LCD controller/driver IC can display alphabets, numbers, Chinese fonts and self-defined characters. It
supports 3 kinds of bus interface, namely 8-bit, 4-bit and serial. All functions, including display RAM, Character
Generation ROM, LCD display drivers and control circuits are all in a one-chip solution. With a minimum system
configuration, a Chinese character display system can be easily achieved.
ST7920 includes character ROM with 8192 16x16 dots Chinese fonts and 126 16x8 dots half-width alphanumerical
fonts. Besides, it supports 64x256 dots graphic display area for graphic display (GDRAM). Mix-mode display with
both character and graphic data is possible. ST7920 has built-in CGRAM and provide 4 sets software programmable
16x16 fonts.
ST7920 has wide operating voltage range (2.7V to 5.5V). It also has low power consumption. So ST7920 is suitable
for battery-powered portable device.
ST7920 LCD driver consists of 32-common and 64-segment. Company with the extension segment driver (ST7921)
ST7920 can support up to 32-common x 256-segment display.
Part Number
ST7920-0A
ST7920-0B
ST7920-0C
ST7920-0F
Font Code
BIG-5 Code Set (Traditional Chinese)
GB Code Set (Simplified Chinese)
Chinese (Traditional/Simplified) & Japanese
Chinese (Traditional/Simplified), Japanese & Korean
V4.0
1/49
2008/08/18
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
