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NJU6535 - Duty LCD Driver

General Description

The NJU6535 is a 1/3 or 1/4 duty LCD driver for segment type LCD panel with key scan function transmitting the 30 keys maximum scanned data (6 x 5 = 30) to CPU.

The NJU6535 chooses numbers of common, key scan, and general purpose ports by instructions.

Key Features

  • 42-segment Drivers Programmable Duty Ratio 1/3 Duty : 126-segment (Maximum) 1/4 Duty : 164-segment (Maximum) 30-key Scan Function (6X5 matrix) Needless for anti-reverse current diodes in key scan Programmable Bias Ratio 1/2, 1/3 bias Output Port for LED (maximum 4 LED) Serial Interface (SI, SO, SCL, CS) Useful Instruction set Incorporated LCD Driving Voltage Generator Circuits Electrical Variable Resistance (8-step) Logic Operating Voltage 4.5 ~ 5.5V LCD Driving Voltage ~5.5V Pa.

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The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NJU6535 1/3 , 1/4 Duty LCD Driver GENERAL DESCRIPTION The NJU6535 is a 1/3 or 1/4 duty LCD driver for segment type LCD panel with key scan function transmitting the 30 keys maximum scanned data (6 x 5 = 30) to CPU. The NJU6535 chooses numbers of common, key scan, and general purpose ports by instructions. Therefore, It drives 126 segments at 1/3 duty in use of 3 commons and 42 segments or 164 segments at 1/4 duty in use of 4 and 41. Also it provides 4 general purpose output ports maximum to drive LEDs or others directly. Furthermore, the NJU6535 can select a LCD driving voltage out of 8 steps voltage by the instruction to adjust the display contrast of LCD panel.