NJU3426 查看數據表（PDF） - Japan Radio Corporation
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NJU3426 Datasheet PDF : 12 Pages
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NJU3426
(2) COMMAND REGISTER 1
The “Command register 1” is used for setting “Duty ratio for timing signal”, “Display control ON/OFF” and “Shifting
display digits”. When the upper 1 bit (B7) of the 1st word is “1”, the lower 7 bits (B6 to B0) are recognized as
command data, and stored in the “Command register 1”. Note that changing the “Duty ratio” or “Shifting display
digits” must be executed under the “Display control OFF”, otherwise it may cause flickering. The contents of the
“Command register 1” is initially set up at power-ON reset or reset signal, as shown below.
DEFAULT VALUES OF COMMAND REGISTER 1
• Duty ratio for timing signal
: 2/16
• Display control ON/OFF
: OFF
• Shifting display digits
:7
B7 B6 B5 B4 B3 B2 B1 B0
1 DT2 DT1 DT0 DSP DE2 DE1 DE0
Recognition data Duty ratio for Display control Shifting display digits
timing signal ON / OFF
Note.)
MD2
0
0
0
0
1
1
1
1
MD1
0
0
1
1
0
0
1
1
MD0
0
1
0
1
0
1
0
1
Duty ratio for timing signal
2/16
4/16
6/16
8/16
10/16
12/16
14/16
15/16
DSP
Display control
0
OFF
1
ON
When the “Display control is OFF” is set, all output pins become in display OFF state.
DE2 DE1 DE0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Shifting display digits
7
8
9
10
11
12
13
14
-3-
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