This document is about BTHQ 21605V-FSRE-I2C-COG specification. It is a 16 character (5x8 dots) x2 line FSTN positive black and white reflective LCD character module. It is driven by a 1:18 multiplexed drive, 1/4 bias. The optimal viewing direction is 6 o'clock. The driving IC is 'PHILIPS' PCF 2119RU/2/F2 COG form LCD controller/driver. The data interface is I2C bus. It has RTV coating.
The BTHQ 21605V-FSRE-I2C-COG is a 16‑character (5 × 8 dots) × 2‑line reflective LCD module with a Philips PCF2119 driver and I²C‑bus interface. It is designed for use with a 3 V logic supply and includes an RTV coating for protection.
The document provides mechanical dimensions, environmental limits, absolute maximum ratings, and typical electrical characteristics such as operating voltage ranges, input signal levels, and supply currents. Timing diagrams for the I²C interface are also included.
| Outline dimensions | 67.00 mm × 27.8 mm × 2.80 mm (excluding pins and epoxy) |
|---|---|
| Viewing area | 61.0 mm × 15.8 mm |
| Active area | 56.20 mm × 11.50 mm |
| Display format | 16 characters (5 × 8 dots) × 2 lines |
| Operating voltage (logic) | 2.85 V – 3.15 V |
| Operating voltage (LCD) | 5.0 V – 5.6 V |
| Supply voltage range (logic) | -0.5 V to +4.0 V |
The logic circuit operates between 2.85 V and 3.15 V, with a typical value of 3.0 V.
The module measures 67.00 mm wide, 27.8 mm high and 2.80 mm deep, not counting pins and epoxy.
Pin 4 (SDA) is the PC serial data input/output line.
The supply voltage (logic) must stay between –0.5 V and +4.0 V relative to ground.