NJU6577

The NJU6577 is a bit map LCD driver to display graphics or characters. NJU6577 contains 4,240 bits display data RAM, microprocessor interface circuits, instrudion decoder, 80-segment and 53-common(1 out of 53-driver is prepared for icon display) drivers.The bit image display data  is  transferred to the display data RAM by serial or 8-bit parallel mode.53 x 80 dots graphics or 5-charader 3-line by 16 x 16 dot character with icon are displayed by NJU6577 itself.The wide operating voltage like as  2.4V t o S.SV and low operating current are useful to apply small sized battery operated items.The build-in electrical variable resistance is very precision,furthermore the redangle outlook is very applicable to COG or Slim TCP.

Features of the NJU6577 are:(1)direct correspondence between display data RAM and LCD pixel; (2)display data RAM:4,240 bits; (3)133 LCD drivers--53- common and 80-segment; (4)dired interface with both of 68 and 80 type MPU; (5)serial interface; (6)programmable duty ratio;1/52 or 1/53 duty; (7)useful instrudion set:display data readiwrite, display ON/OFF cont, inverse display, page address set, display starting line set, column address set,  status read, all On/Off, icon display, read modify write common driver order assignment and power saving.; (8)power supply circuits for LCD incorporated step up circuits, regulator, voltage follower x 4; (9)precision eledrical variable resistance; (10)low power consumption; (11)operating voltage:2.4V~5.5V; (12)LCD driving voltage:6.0V~13.5V; (13)package outline:chip/bumped chip/TCP; (14)C-MOS technology.

The absolute maximum ratings of the NJU6577 can be summarized as:(1)supply voltage Vdd:-0.3 to +7.0V;(2)storage temperature:-55 to +125;(3)operating temperature:-30 to 80 ;(4)supply voltage V5:Vdd-13.5 to Vdd+0.3V;(5)supply voltage V1-V4:V5 to Vdd+0.3V;(6)input voltage:-0.3 to Vdd+0.3V.Internal Power Supply Circuits generate the high voltage and bias voltage which required by the LCD.The power supply circuits consist of step up(tripler or doubter) circuits, regulation circuits, and voltage follower.Though the internal Power Supply designed for small size LCD panel, therefore it will not use for the large size LCD panel application.If the contrast is no good in those application, please use external power supply supplied more high current.The suitable values of the capacitors connecting to the V1 to V5 terminals, the step up circuit and the feedback resistors for VS operational amplifier depend on the LCD panel.And the power consumption in the LCD panel is changeable with the display pattern.Therefore a trial with actual module should be practiced.