This document is a specification of 20 characters (5x8 dots) x 2 lines STN Positive Yellow Reflective Dot Matrix LCD module
The document provides a detailed specification of the BTHQ 22008VSS-01 LCD module, a 20‑character by 2‑line STN positive yellow reflective dot‑matrix display. It lists the mechanical dimensions, electrical characteristics, interface pinout, and environmental limits.
Key data include the module's outline size, power supply requirements, timing diagram, and typical current consumption. The sheet also contains a CGROM character code table for reference.
| Outline dimensions | 146.0 mm (W) × 43.0 mm (H) × 11.0 mm (D) |
|---|---|
| Effective viewing area | 123.0 mm (W) × 23.0 mm (H) |
| Display format | 20 characters × 2 lines |
| Character size | 4.840 mm (W) × 9.217 mm (H) (5 × 8 dots) |
| Weight | Approx. 57 g |
| Logic supply voltage (VDD‑VSS) | 4.75 V – 5.25 V |
| LCD supply voltage (VLCD) | 4.2 V – 5.0 V |
| Logic & LCD supply current (character mode) | 2.1 mA |
| Maximum logic voltage | +7.0 V |
| Operating temperature range | 0 °C – +50 °C |
The module operates from 0 °C to +50 °C, with storage limits of –10 °C to +60 °C.
Pin 1 is VSS (ground), pin 2 is VDD (logic +5 V), pin 3 is VO (LCD driver supply), pin 4 is RS (register select), pin 5 is R/W (read/write), and pins 6‑14 are data lines and optional LED backlight connections.
The logic supply voltage (VDD) may not exceed +7.0 V.
The LCD can display 20 characters per line on 2 lines.