General Description

The AS1120 is an LCD direct-driver capable of driving up to 46 LCD segments with one non-multiplexed backplane.

The device contains an integrated serial-to-parallel interface and generates the necessary signals to drive LCD panels.

Internal synchronous backplane signal regeneration allows the device to mix different drivers with different LCDs for superior brightness stability over a wide temperature range. The device also supports external backplane signals.

Key Features

■ 46-Segment LCD Driver

■ Serial-to-Parallel Interface

■ Integrated Oscillator w/ External R/C and Backplane Input

■ Supports Alphanumeric and Bar-Graph Devices

■ Two Data Transfer Configurations:

- Cascade

- Parallel

■ Non-Multiplexed Backplane

■ Very-Low Current Consumption

■ Power Supply Range: -0.3 to +7.0V

■ Operating Temperature Range: -40 to +85ºC

■ 64-pin LQFP Package

Applications

The device is ideal for industrial LCD systems, portable system displays, panel meters with wide temperature ranges, high-performance optical displays, or for any other space-limited A/D application with low power-consumption and single-supply requirements.