NJU6535 Datasheet, PDF (1/30 Pages) New Japan Radio – 1/3 , 1/4 Duty LCD Driver

NJU6535
Preliminary
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.
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
Package Outline
QFP64-G1
QFP64-H1
C-MOS Technology (Substrate :P)
PACKAGE OUTLINE
NJU6535FG1
NJU6535FH1
02/08/06
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