OM4085 is a universal LCD driver with low multiplex rates
The OM4085 is a single‑chip LCD controller/driver from Philips Semiconductors. It supports static or 2, 3, or 4 backplane multiplexing and offers selectable bias configurations, making it suitable for a wide range of low‑multiplex LCD panels.
The device includes 24 segment drives, 24 × 4‑bit RAM for display data, and operates from a 2.0 V to 6.0 V supply. It is TTL/CMOS compatible, can be cascaded for large displays (up to 1536 segments), and requires no external components in multiple‑device applications.
| Backplane drive configuration | static or 2, 3 or 4 backplane multiplexing |
|---|---|
| Segment drives | 24 segment drives |
| Display RAM | 24 × 4‑bit |
| Power supply range | 2.0 V to 6 V |
| Package type | plastic very small outline package; 40 leads SOT 158‑1 |
| Cascadable segments | up to 1536 segments |
| Interface compatibility | TTL/CMOS compatible |
| Power saving mode | available for low‑power applications |
The OM4085 operates from a 2.0 V to 6 V power supply.
It provides 24 segment drives.
Yes, it can be cascaded for up to 1536 segments.
It is supplied in a plastic very small outline package with 40 leads (SOT 158‑1).