HCMS-xxxx Hewlett-Packard, HCMS-xxxx Datasheet - Page 12

• Manufacturer Part Number: HCMS-xxxx
• Description: High Performance CMOS 5 x 7 Alphanumeric Displays
• Manufacturer: Hewlett-Packard

Table 2. Control Shift Register
Set Low
Set High
to Select
to Select
Control
Control
Word 0
Word 1
Bit D
Bit D
H
L
SLEEP MODE
7
7
D
L
6
Peak Current
Reserved for Future
Brightness
D
L
must be set Low)
Control
Use (Bits D
5
H H
H L
L H
L
L
L – DISABLES INTERNAL OSCILLATOR-DISPLAY BLANK
H – NORMAL OPERATION
D
L
CONTROL WORD 0
CONTROL WORD 1
4
2
-D
6
D
L
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
Pixel Current
3
Typical Peak
PWM Brightness
(mA)
12.8
4.0
6.4
9.3
D
L
H
H
H
H
H
H
H
H
Control
L
L
L
L
L
L
L
L
2
D
D
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
1
1
(Relative Brightness, %)
D
D
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
External Display Oscillator Prescaler
0
0
Scale Current
Relative Full
L – Oscillator Freq
H – Oscillator Freq
100
31
50
73 (Default at Power Up)
Serial/Simultaneous Data Out
Oscillator
On-Time
L – D
H – D
Cycles
12
11
14
18
22
28
36
48
60
0
1
2
3
4
5
7
9
out
out
holds contents of Bit D
is functionally tied to D
Factor
1
8
Duty
11.7
(%)
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
0
Brightness
Relative
11.7
(%)
100
1.7
3.3
5.0
6.7
8.3
15
18
23
30
37
47
60
80
0
7
in