NJU6624 New Japan Radio Co., Ltd., NJU6624 Datasheet - Page 14

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

(3)Combination of NJU6624A(Master) and NJU6624B(slave)
(3)Combination of NJU6624A(Master) and NJU6624B(slave)
(3-1)A point to notice of master / slave connection
(3-1)A point to notice of master / slave connection
(3-2)Panel composition of master / slave mode at smooth scroll.
(3-2)Panel composition of master / slave mode at smooth scroll.
The combination of NJU6624A and B realizes 24character-1line display in 1/8 duty driving.
The combination of NJU6624A and B realizes 24character-1line display in 1/8 duty driving.
The instruction sets of version A and B are not so same (refer the instruction table) that the application does not
The instruction sets of version A and B are not so same (refer the instruction table) that the application does not
need to separate the signal lines to MCU.
need to separate the signal lines to MCU.
Therefore, minimum lines (only 5-wires) realize the separately control for version A and B in the combined applica-
Therefore, minimum lines (only 5-wires) realize the separately control for version A and B in the combined applica-
tion.
tion.
The NJU6624A of master LSI and the B of slave LSI don’t synchronize the frame frequency, so that the timings of
The NJU6624A of master LSI and the B of slave LSI don’t synchronize the frame frequency, so that the timings of
blinking between version A and B are not synchronized.
blinking between version A and B are not synchronized.
Though the NJU6624A/B generate the space for smooth scroll operation automatically, it does not generate a
Though the NJU6624A/B generate the space for smooth scroll operation automatically, it does not generate a
space at the right side position by 12th character. Therefore, when the scroll is operated on the 1-line LCD panel
space at the right side position by 12th character. Therefore, when the scroll is operated on the 1-line LCD panel
with normal wiring by one driver control, a space after the last character is lacked.
with normal wiring by one driver control, a space after the last character is lacked.
In case of combination application using NJU6624A and B, when the smooth scroll operate on the 1-line LCD, the
In case of combination application using NJU6624A and B, when the smooth scroll operate on the 1-line LCD, the
data should be set to overlap the memory area which are (0C)H and (0D)H of A and (01)H and (02)H of B, and
data should be set to overlap the memory area which are (0C)H and (0D)H of A and (01)H and (02)H of B, and
SEG1 to SEG5 of NJU6624B should not be wired on the LCD panel for the blank display between the character.
SEG1 to SEG5 of NJU6624B should not be wired on the LCD panel for the blank display between the character.
Therefore, the maximum display size is 23-character 1-line in case of this application.
Therefore, the maximum display size is 23-character 1-line in case of this application.
-DD RAM organization
-DD RAM organization
NJU6624A internal DDRAM
NJU6624A internal DDRAM
NJU6624B internal DDRAM
NJU6624B internal DDRAM
-Panel wiring example
-Panel wiring example
Further more, detailed smooth scroll execution are shown at item (i) of instruction
Further more, detailed smooth scroll execution are shown at item (i) of instruction
SEG
SEG
57 58 59 60 61 62 63 64 65 66 67 68 69 70 71
57 58 59 60 61 62 63 64 65 66 67 68 69 70 71
NJU6624A
NJU6624A
0 7
"N" "J" "U" " 6 " " 6 " " 2 "
0 8
0 9
0A
Not use
Not use
0B 0 C 0 D
" 6 " " 6 " " 2 " " 4 "
0 0
0 1 0 2
NC NC NC NC NC
NC NC NC NC NC
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
Scroll RAM
Scroll RAM
0 3
NJU6624B
NJU6624B
0 4
0 5
10 11 12 13 14 15 16 17 18
10 11 12 13 14 15 16 17 18
NJU6624A/B
NJU6624A/B