HDSP2110S Datasheet, PDF (11/13 Pages) Infineon Technologies AG – 8-Character 5x7 Dot Matrix Parallel Input Alphanumeric Intelligent Display

Figure 13. Control Word Data Definition
D7 D6 D5 D4 D3 D2 D1 D0
C ST ST BL FL Br Br Br
00 0
00 1
01 0
01 1
10 0
10 0
11 0
11 1
100% Brightness
80% Brightness
53% Brightness
40% Brightness
27% Brightness
20% Brightness
13% Brightness
Blank Display
Key
C Clear Function
ST Self test
BL Blink function
FL Flash function
Br Brightness control
0 Flash Function Disabled
1 Flash Function Enabled
0 Blink Function Disabled
1 Blink Function Enabled (overrides Flash Function)
0 _{X Normal Operation X=bit ignored}
1 _{R Run Self Test, R=Test Result, R=1/pass, 0=fail}
0 Normal Operation
1 Clear Flash RAM & Character RAM (Character RAM=20 Hex)
Figure 14. Clear Function
CE WR FL AL A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 Operation
0 0 1 1 0 X X X 0 X X X X X X X Clear disabled
0 0 1 1 0 X X X 1 X X X X X X X Clear user RAM, page
RAM, flash RAM and dis-
play
X=don’t care
Figure 15. Display Cycle Using Built-in ROM Example
Display message “Showtime.” Digit 0 is leftmost—closest to pin 1.
Logic levels: 0=Low, 1=High, X=Don’t care.
RST CE WR RD FL A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 Operation
Display
0 X 1 1 1 X X X X X X X X X X X X X Reset. No Read/Write All Blank
Within 3 Clock Cycles
1 0 0 1 1 1 0 X X X 0 0 X 0 0 0 1 1 53% Brightness
Selected
All Blank
1 0 0 1 1 1 1 0 0 0 0 1 0 1 0 0 1 1 Write “S” to Digit 0 S
1 0 0 1 1 1 1 0 0 1 0 1 0 0 1 0 0 0 Write “H” to Digit 1 SH
1 0 0 1 1 1 1 0 1 0 0 1 0 0 1 1 1 1 Write “O” to Digit 2 SHO
1 0 0 1 1 1 1 0 1 1 0 1 0 1 0 1 1 1 Write “W” to Digit 3 SHOW
1 0 0 1 1 1 1 1 0 0 0 1 0 1 0 1 0 0 Write “T” to Digit 4 SHOWT
1 0 0 1 1 1 1 1 0 1 0 1 0 0 1 0 0 1 Write “I” to Digit 5 SHOWTI
1 0 0 1 1 1 1 1 1 0 0 1 0 0 1 1 0 1 Write “M” to Digit 6 SHOWTIM
1 0 0 1 1 1 1 1 1 1 0 1 0 0 0 1 0 1 Write “E” to Digit 7 SHOWTIME
 2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA
www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
OSRAM Opto Semiconductors GmbH & Co. OHG • Regensburg, Germany
www.osram-os.com • [phone]
11
HDSP2110S/1S/2S/3S/4S/5S
March 24, 2000-13