Duty LCD Driver
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...
Description
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.
PACKAGE OUTLINE NJU6535FH1
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-H1
C-MOS Technology (Substrate :P)
Ver.2011-09-17
-1-
NJU6535
PIN LOCATION
S5 K0 K1 K2 K3 K4 VDD V0 V1 V2 VSS OSC SO CE SCL SI
S4 S3 S2 SEG42/S1 SEG41/S0 SEG40/COM4 COM3 COM2 COM1 SEG39 SEG38 SEG37 SEG36 SEG35 SEG34 SEG33
SEG32 SEG31 SEG30 SEG29 SEG28 SEG27 SEG...
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