PDSP1880 Datasheet, PDF (13/15 Pages) OSRAM GmbH – Alphanumeric Programmable Display™

PDSP1880, PDSP1881, PDSP1882, PDSP1883, PDSP1884
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
Within 3 Clock
Cycles
All Blank
1
0 0 1 1 1 0 X X X 0 0 X 0 0 0 1 1 53% Brightness
All Blank
Selected
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
Displaying User Defined Character Example
Load character “A” into UDC-5 and then display it in digit 2.
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
Within 3 Clock
Cycles
All Blank
1
0 0 1 1 0 0 X X X X X X X 0 1 0 1 Select UDC-5
All Blank
1
0 0 1 1 0 1 0 0 0 X X X 0 1 1 1 0 Write into Row 1 of All Blank
UDC-5
1
0 0 1 1 0 1 0 0 1 X X X 1 0 0 0 1 Write into Row 2 of All Blank
UDC-5
1
0 0 1 1 0 1 0 1 0 X X X 1 0 0 0 1 Write into Row 3 of All Blank
UDC-5
1
0 0 1 1 0 1 0 1 1 X X X 1 1 1 1 1 Write into Row 4 of All Blank
UDC-5
1
0 0 1 1 0 1 1 0 0 X X X 1 0 0 0 1 Write into Row 5 of All Blank
UDC-5
1
0 0 1 1 0 1 1 0 1 X X X 1 0 0 0 1 Write into Row 6 of All Blank
UDC-5
1
0 0 1 1 0 1 1 1 0 X X X 1 0 0 0 1 Write into Row 7 of All Blank
UDC-5
1
0 0 1 1 1 1 0 1 0 1 X X X 0 1 0 1 Write UDC-5 into (Digit 2) A
Digit 2
2006-03-30
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