HCMS-2975_13 Datasheet, PDF (12/16 Pages) AVAGO TECHNOLOGIES LIMITED – High Performance CMOS 5 x 7 Alphanumeric Displays

Table 2. Control Shift Register
L
D₆
D₅
Bit D₇
Set Low
to Select
Control
Word 0
CONTROL WORD 0
D₄
D₃
D₂
D₁
D₀
PWM Brightness
Control
L
L
L
L
L
L
L
H
L
L
H
L
L
L
H
H
L
H
L
L
L
H
L
H
L
H
H
L
L
H
H
H
H
L
L
L
H
L
L
H
H
L
H
L
H
L
H
H
H
H
L
L
H
H
L
H
H
H
H
L
H
H
H
H
On-Time
Oscillator
Cycles
0
1
2
3
4
5
7
9
11
14
18
22
28
36
48
60
Duty
Factor
(%)
0
0.2
0.4
0.6
0.8
1.0
1.4
1.8
2.1
2.7
3.5
4.3
5.5
7.0
9.4
11.7
Relative
Brightness
(%)
0
1.7
3.3
5.0
6.7
8.3
11.7
15
18
23
30
37
47
60
80
100
Peak Current
Brightness
Control
HL
LH
LL
HH
Typical Peak
Pixel Current
(mA)
4.0
6.4
9.3
12.8
Relative Full
Scale Current
(Relative Brightness, %)
31
50
73 (Default at Power Up)
100
SLEEP MODE
L − DISABLES INTERNAL OSCILLATOR-DISPLAY BLANK
H − NORMAL OPERATION
H
L
Bit D₇
Set High
to Select
Control
Word 1
CONTROL WORD 1
L
L
L
L
D₁
Reserved for Future
Use (Bits D₂-D₆
must be set Low)
D₀
Serial/Simultaneous Data Out
L − D_out holds contents of Bit D₇
H − D_out is functionally tied to D_in
External Display Oscillator Prescaler
L − Oscillator Freq 1
H − Oscillator Freq 8
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