NJU6579

The NJU6579 is a bit map LCD driver to display graphics or characters.It contains 8,710 bits display data RAM, microprocessor interface circuits, instruction decoder, 134-segment and 65-common (1 out of 65-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.65 x 134 dots graphics or 8-character 4-line by 16 x 16 dot character with icon are displayed by NJU6579 itself.Furthermore,NJU6579 contains accurate electrical variable Resistors and is rectangle-shaped for COG and slim TCP.The wide operating voltage like as 2.4V to 5.5V and low operating current are useful to apply small sized battery operated items.

Features of the NJU6579 are:(1)direct correspondence between display data RAM and LCD pixel; (2)display data RAM:8,710 bits; (3)199 LCD drivers--65- common and 134-segment; (4)dired interface with both of 68 and 80 type MPU; (5)serial interface; (6)programmable duty ratio;1/64 or 1/65 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 NJU6579 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.The NJU6579 is operating as one of pipe-line processor by the bus-holder connecting to the internal data bus to adjust the operation frequency between MPU and the Display Data RAM or Internal Register.For example, when the MPU read out the data from the Display Data RAM, the data read out in the data read cycle(dummy read) is held in the bus-holder at once then read out from the bus-holder to the system bus at next data read cycle.And when write the data into the Display Data RAM,  the data is held in the bus-holder at once then write into the Display Data RAM by next data write cycle.