A...G (ASCII data input)LE - Latch EnableL signal: The display follows the data on the ASCII data input.
H signal: The display remains although
the data on the ASCII input changes.After a signal change from L to H, thedisplay stores the information received
on the ASCII data input prior to the
signal change. The LE signal must be 1 µs min. on L before the transition to H (t1). After the signal change, the information on the ASCII data input must stay for 1 µs min. (t2).BI - Blanking inputL signal: Display visible.
H signal: Display blank, regardless of the ASCII- and LE input conditions.Power supply0V: Ground level of supply voltage and signals.
Ucc: Positive terminal of the supply
voltage, protected against reversed
polarity.
Ucc( 1 )A( 4 )B( 5 )
C( 6 )
D( 7 )
E( 8 )
F( 9 )
G( 10 )
LE( 2 )
BI( 3 )0V( 11 ) ASCII-input Block diagram D72-422
The display modules D72-422 areequipped with a 5x7 LED dot matrixand can display small and capital letters, numbers and special charac-ters. The Schmitt trigger characteristicon all data inputs grants high noiseimmunity, even in cases of long datalines between control and display.
LE-signal t1, t2 = min. 1 µs Ucc( 1 )A( 4 )B( 5 )C( 6 )D( 7 )
E( 8 )
F( 9 )
G( 10 )
LE( 2 )
BI( 3 )0V( 11 ) Block diagram D72-422SThe signal inputs of this version areconnected to Ucc as opposed to 0Vwith internal resistors. Therefore, theyare controllable with active low sig-nals instead of active high signals. Character set
ASCII-
input Technical data
Supply voltage: Ucc = +15...30 V DCSupply current:Ucc = 15 V: typ. 85 mA, max. 106 mA
Ucc = 24 V: typ. 58 mA, max. 73 mA
Ucc = 30 V: typ. 51 mA, max. 64 mASignal voltage:L = -3,5...+3 V; H = +15...30 VInput resistance: typ. 22 k
Ω
Operating temperature: 0...55 °C
Application data
Unconnected data inputs will be evaluated as L signal except D72-422S: evaluation as H signal). 6