ST7920 Datasheet | Sitronix

Features l Operation Voltage Range: Ø 2.7V to 5.5V l Support 8-bit, 4-bit and serial bus MPU interface l 64 x 16-bit display RAM (DDRAM) Ø Supports 16 words x 4 lines (Max) Ø LCD display range 16 words x 2 lines l 64 x 256-bit Graphic Display RAM (GDRAM) l 2M-bits Character Generation ROM (CGROM): Support 8192 Chinese words (16x16 dot matrix) l 16K-bit half-width Character Generation ROM (HCGROM): Supports 126 characters (16x8 dot matrix) l 32-mon x 64-segment (2 lines of character) LCD drivers l Automatic power on reset (POR) l External reset pin (XRESET) l With the extension segment drivers, the display area can up to 16x2 lines l Built-in RC oscillator: Frequency is adjusted by an external resistor l Low power consumption design Ø Normal mode (450u A Typ VDD=5V) Ø Standby mode (30u A Max VDD=5V) l VLCD (V0 to VSS): max 7V l Graphic and character mixed display mode l Multiple instructions: Ø Display Clear Ø Return Home Ø Display ON/OFF Ø Cursor ON/OFF Ø Display Character Blink Ø Cursor Shift Ø Display Shift Ø Vertical Line Scroll Ø Reverse Display (by line) Ø Standby Mode l Built-in voltage booster (2 times) VOUT: max 7V l 1/33 Duty (with ICON) 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)....