參數(shù)資料
型號: TB62709FG
廠商: Toshiba Corporation
英文描述: 7−SEGMENT DRIVERS WITH BUILT−IN DECODERS (COMMON ANODE CAPABILITY, MAXIMUM 4−DIGIT CONTROL)
文件頁數(shù): 9/29頁
文件大?。?/td> 576K
代理商: TB62709FG
TB62709NG/FG
2006-06-14
9
DIGIT SETTINGS
z
Setting the number of digits (Table 4)
Writing 21H to D
15
~D
8
and at the same step writing 0H~3H to D
3
~D
0
sets the number of digits to a maximum
of four the display. The initial setting is four digits, and four will also be set by a Data Clear.
The current settings continue until changed (by reset execution, or to the initial state, Data Clear state, or
standby state).
When changing the number of digits, also set D
7
to D
4
.
Table 4 Digit settings
REGISTER DATA
D
2
D
15
~D
8
D
7
~D
4
D
3
D
1
D
0
HEX CODE
INITIAL
SETTING
ACTIVATED DIG
0 ONLY
21H
X
0
0
0
0
21X0H
ACTIVATED DIG
0~1
21H
X
0
0
0
1
21X1H
ACTIVATED DIG
0~2
21H
X
0
0
1
0
21X2H
ACTIVATED DIG
0~3
21H
X
0
0
1
1
21X3H
X = Input H or L.
DECODE SETTINGS
z
Decode settings (Table 5)
The settings for Decode are the same as the settings for the number of digits, described under setting, above.
Writing 21H to D
15
~D
8
and writing 0~1H to D
7
~D
4
set Decode mode.
When using this IC for controlling the lighting on individual LEDs used for a dot matrix rather than a
7
segment display, set to No Decode.
As Table 6 shows, D
0
in the data register is used to turn OUT
a ON and OFF ; D
1
turns OUT
b ON and OFF.
The initial setting is Decode mode, and Decode mode will also be set by a Data Clear.
The current settings continue until changed (by reset execution, or to the initial state, Data Clear state, or
standby state).
Since D
3
to D
0
are also used for setting the number of digits, when changing the Decode setting, also set D
3
to
D
0
.
Table 5 Decode settings
REGISTER DATA
D
5
D
15
~D
8
D
7
D
6
D
4
D
3
~D
0
HEX CODE
INITIAL
SETTING
PASS DECODER (NO DECODE)
21H
0
0
0
0
X
210XH
DECODE
21H
0
0
0
1
X
211XH
X = Input H or L.
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