NJU6455

The NJU6455 is a bit map LCD driver to display graphics or characters.It contains 10,400 bit display data RAM, microprocessor  interface circuits, instruction decoder, 128-segment and  totally 33-common (32 out of 33-driver can use as both of common and segment) drivers.The bit image display data is transferred to the display data RAM by serial or 8-bit parallel mode.33 x 128 dot graphics or 8-character 2-line by 16 x 16 dot character with icon are displayed by NJU6455 itself.Also, the NJU6455 can extend its display capacity to 33 x 288 dots of graphics or character display by connecting one more NJU6455.The wide operating voltage like as 2.4 to 5.5V and  low operating current are useful to apply small sized battery operated items.

Features of the NJU6455 are:(1)direct correspondence between display data RAM and LCD pixel; (2)display data RAM----10,400 bits; (3)160 LCD Drivers----33 common(32 out of 33 can assign as segment driver) or 128-segment; (4)number of common driver can select by the instruction; (5)direct interface with both of 68 and 80 type MPU; (6)seria interface; (7)extension function (can combine with one more NJU6455); (8)programmable duty ratio;1132 or 1133 duty; (9)useful instruction set:display data readlvllrite, 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; (10)power supply circuits for LCD incorporated step up circuits, regulator, voltage follower x 4; (11)electrical variable resistance; (12)low power consumption; (13)incorporated CR oscillator; (14)operating voltage:2.4V~5.5V;(15)LCD driving voltage:6.0V~13.5V;(16)package outline:chip/bumped chip/TCP; (17)C-MOS technology.

The absolute maximum ratings of the NJU6455 can be summarized as:(1)supply voltage(1) Vdd:-0.3 to 7.0V;(2)storage temperature:-55 to +125;(3)operating temperature:-30 to 80 ;(4)supply voltage(2):Vdd-13.5 to Vdd+0.3V;(5)input voltage:-0.3 to Vdd+0.3V.This generator generates the timing signal for the display system by combination of the master dock and Driving Signal FR.The Frame Signal FR has a function to generate the 2 frame alternative driving method wave form for the LCD panel, and synchronizing the line counter and common timing generator to the master LSI.Therefore, the FR signal must be 50% duty ratio clock signal which synchronized with the frame signal. When NJU6455 use as a slave, the FR terminal change to the input terminal.