NJU6624 New Japan Radio Co., Ltd., NJU6624 Datasheet - Page 21

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

Example of 2 dot smooth scroll
Example of 2 dot smooth scroll
The smooth scroll sequence, which is executed by the 2dot-shift and 4dot-shift instruction, LCD display and DD
The smooth scroll sequence, which is executed by the 2dot-shift and 4dot-shift instruction, LCD display and DD
RAM address movement are shown as follows.
RAM address movement are shown as follows.
RAM address set
Display ON/OFF
Write to RAM
Write to RAM
Write to RAM
Display Shift
Write data to
Display Shift
Power ON
DD RAM
Dot Shift
Dot Shift
Dot Shift
Dot Shift
NOTE) The address set instruction for scroll RAM is not needed later on.
NOTE) The address set instruction for scroll RAM is not needed later on.
Seems to execute
Seems to execute
2dot-shift
2dot-shift
write character code
write character code
to the address (00)H.
to the address (00)H.
Set the address
Set the address
(0C)H to DDRAM
(0C)H to DDRAM
write character code
write character code
to the address (0C)H
to the address (0C)H
(0D)H.
(0D)H.
2dot-shift
2dot-shift
4dot-shift
4dot-shift
Seems to execute
Seems to execute
2dot-shift
2dot-shift
write character code
write character code
to the address (00)H.
to the address (00)H.
2dot-shift
2dot-shift
4dot-shift
4dot-shift
For example, the address (0D)‚ auto-increments to (00)‚ at the timing of the write to
For example, the address (0D)‚ auto-increments to (00)‚ at the timing of the write to
RAM instruction, then the address (00)‚ returns to 1st line scroll RAM position by the
RAM instruction, then the address (00)‚ returns to 1st line scroll RAM position by the
display shift instruction.
display shift instruction.
< LCD Display >
< LCD Display >
Setting address in (AC)
Setting address in (AC)
1ch 2
00 01 02 ---- 09 0A 0B 0C 0D
0 0
00 01 02 ---- 09 0A 0B 0C 0D
0 0
0 1
0 1
0 1
0 2
<DD RAM address>
<DD RAM address>
NJU6624A/B
NJU6624A/B
0 1
0 1
0 2
0 2
0 2
0 3
0 2
0 2
0 3
0 3
0 3
0 4
3
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
0 9
0 9
0 A
0 A
0 A
0 B
10 11 12
0 A
0 A
0 B
0 B
0 B
0 C
0 C
0 B
0 B
0 C
0 C
0 D
0 C
0 C
0 D
0 D
0 D
Scroll
Scroll
RAM
RAM
0 0
0 D
0 D
0 0
0 0
0 0
0 1