Key facts
- Brand
- Sitronix
- Model
- ST7920
- Category
- Other Electronics
- Industry
- Electronics
- Documents
- 4
- Languages
- ZH · EN
- Last added
- 2026-10-18
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Sitronix ST7920 LCD Controller/Driver User Manual
The ST7920 is a single‑chip LCD controller/driver that supports Chinese fonts, graphic display and three bus interfaces (8‑bit, 4‑bit and serial). It includes built‑in character ROMs, graphic RAM and a voltage doubler for low‑power portable applications.\n\nThe document provides a complete description of the pinout, functional blocks, voltage ranges, power consumption, and example application circuits, enabling designers to integrate the device quickly into LCD modules.
Read onlineSitronix ST7920 specifications
| Operating Voltage Range | 2.7 V to 5.5 V |
|---|---|
| Normal Mode Current Consumption | 450 µA (typ) at VDD=5 V |
| Standby Mode Current Consumption | 30 µA (max) at VDD=5 V |
| Character Generation ROM (CGROM) | 2 M‑bit, 8192 Chinese characters (16×16) |
| Half‑width Character Generation ROM (HCGROM) | 16 K‑bit, 126 characters (16×8) |
| Display RAM (DDRAM) | 64 × 16 bit |
| Graphic Display RAM (GDRAM) | 64 × 256 bit |
| Voltage Booster Output (VOUT) | Maximum 7 V |
All Sitronix ST7920 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What are the supported control interfaces for the ST7920?
The ST7920 supports 8-bit microprocessor interface, 4-bit microprocessor interface, and serial interface.
What is the operating voltage range for the ST7920?
The device operates with a power supply between 2.7 V and 5.5 V.
What bus interfaces does the ST7920 support?
The ST7920 supports three bus interfaces: 8‑bit parallel, 4‑bit parallel, and a clock‑synchronized serial interface.
How do you select parallel versus serial mode on the ST7920?
Set the PSB pin to 1 for 8‑/4‑bit parallel mode, or to 0 for serial mode.
What is the supply voltage range for the ST7920?
The controller operates from 2.7 V up to 5.5 V.
How many Chinese characters are stored in the built‑in ROM?
The built‑in ROM contains 8192 Chinese characters of 16×16 size.