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NJU6624AFG1

12-CHARACTER 1-LINE DOT MATRIX LCD CONTROLLER DRIVER with SMOOTH SCROLL FUNCTION

Japan Radio Corporation  

NJU6624A/B

(1-7)Timing Generator

The timing generator generates a timing signals for the DD RAM, CG RAM and MK RAM and other internal

circuits.

RAM read timing for the display and internal operation timing for MPU access are separately generated, so that

they may not interfere with each other.

Therefore, when the data write to the DD RAM for example, there will be no undesirable influence, such as flicker-

ing, in areas other than the display area.

(1-8)LCD Driver

LCD Driver consists of 8-common driver and 71-segment driver.

The character pattern data are latched to the addressed Segment-register respectively. This latched data controls

display driver to output LCD driving waveform.

Note) Display

The NJU6624A/B generate “SPACE” automatically on the segment terminals. Which are six times number of

lines, regardless the smooth scroll function. In busy of the smooth scroll operation, this “SPACE” scrolls also with

characters, there is no icon on the segment terminals which are six times number of lines.

COM1

COM2

COM3

COM4

COM5

COM6

COM7

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COMMK

SEG

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1 2 3 4 5 6 7 8 910 11 12 - - - - 6768697071

“SPACE” is generated when data

read out from CGROM or CGRAM

The loot number of

segment is 71, so that

“SPACE” is not here.

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