HCMS-29X5 Datasheet, PDF (12/16 Pages) Agilent(Hewlett-Packard) – High Performance CMOS 5 x 7 Alphanumeric Displays

12
Table 2. Control Shift Register
CONTROL WORD 0
L
D₆
D₅
D₄
D₃
D₂
D₁
D₀
↑
Bit D₇
Set Low
to Select
Control
Word 0
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 Duty Relative
Oscillator Factor Brightness
Cycles
(%)
(%)
0
0
0
1
0.2
1.7
2
0.4
3.3
3
0.6
5.0
4
0.8
6.7
5
1.0
8.3
7
1.4
11.7
9
1.8
15
11
2.1
18
14
2.7
23
18
3.5
30
22
4.3
37
28
5.5
47
36
7.0
60
48
9.4
80
60
11.7
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