NJU6624 New Japan Radio Co., Ltd., NJU6624 Datasheet - Page 9

• Manufacturer Part Number: NJU6624
• Description: 12-character 1-line Dot Matrix LCD Controller Driver with Smooth Scroll Function
• Manufacturer: New Japan Radio Co., Ltd.

(1-7)Timing Generator
(1-7)Timing Generator
(1-8)LCD Driver
(1-8)LCD Driver
Note) Display
Note) Display
The timing generator generates a timing signals for the DD RAM, CG RAM and MK RAM and other internal
The timing generator generates a timing signals for the DD RAM, CG RAM and MK RAM and other internal
circuits.
circuits.
RAM read timing for the display and internal operation timing for MPU access are separately generated, so that
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.
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-
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.
ing, in areas other than the display area.
LCD Driver consists of 8-common driver and 71-segment 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
The character pattern data are latched to the addressed Segment-register respectively. This latched data controls
display driver to output LCD driving waveform.
display driver to output LCD driving waveform.
The NJU6624A/B generate “SPACE” automatically on the segment terminals. Which are six times number of
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
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.
characters, there is no icon on the segment terminals which are six times number of lines.
COM1
COM1
COM2
COM2
COM3
COM3
COM4
COM4
COM5
COM5
COM6
COM6
COM7
COM7
COMMK
COMMK
SEG
SEG
“SPACE” is generated when data
“SPACE” is generated when data
read out from CGROM or CGRAM
read out from CGROM or CGRAM
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
10 11 12
10 11 12
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
6 676
768697071
8697071
The loot number of
The loot number of
segment is 71, so that
segment is 71, so that
“SPACE” is not here.
“SPACE” is not here.
NJU6624A/B
NJU6624A/B