NJU6539 Datasheet, PDF (1/5 Pages) New Japan Radio – 1/8, 1/9, 1/10 DUTY BITMAP LCD DRIVER WITH KEY SCAN

NJU6539
PRELIMINARY
1/8, 1/9, 1/10 Duty
BITMAP LCD DRIVER with KEY SCAN
GENERAL DESCRIPTION
The NJU6539 is a 10-common x 65-segment bitmap LCD driver
to display graphics or characters.
It contains 650 bits display data RAM, microprocessor interface
circuit, common and segment drivers, key scan circuit, and general
output ports.
An image data from MPU through the serial interface is stored
into the 650 bits internal displayed on the LCD panel through the
commons and segments drivers.
The NJU6539 displays 10 x 65 dots graphics or 11-character
1-line by 5 x 7 dots character + 3 x 65 dots icons.
It contains key scan circuit transmitting the 25-keys maximum (5 x 5
= 25) to MPU.
Also it provides 4 general purpose output ports with PWM output
function maximum to drive LEDs or others directly.
Furthermore, the NJU6539 can select a LCD driving voltage out
of 16 steps voltage by the instruction adjust the display contrast of
LCD panel.
PACKAGE OUTLINE
NJU6539FG1
NJU6539FC2
FEATURES
Direct Correspondence between Display Data RAM and LCD Pixel
Display Data RAM
: 650-bits
LCD Drivers
: 65-seg, 10-com
Serial interface (SIO, SCL, CS)
Programmable Duty Ratio
1/8 Duty, 1/9 Duty, 1/10Duty
Bias Ratio
1/4 bias
25-key scan Function (5 x 5 matrix)
Needless for anti-reverse current diodes in key scan
General Output Ports with 128-steps PWM output (possible LED driving) maximum 4-ports
Useful Instruction Set
Display ON/OFF, Page Address Set, Column Address Set, ADC Select, Inverse Display ON/OFF, whole display
ON/OFF, Reset, EVR Register Set, Duty Select, Power Save mode set, General Output Port set, General Output Port
PWM data set, PWM slope set, PWM program Execute, General Output Port / Key scan output select, Display
Data write,
Bleeder Resistance On-chip
Software Contrast Control (16 steps)
Operating Voltage
Logic Operating Voltage 2.7 to 5.5V
LCD Driving Voltage
5.0 to 10.0V
Package Outline
QFP100-G1
QFP100-C2
C-MOS Technology
(Substrate: P)
Ver.2004-03-01
-1-