purdy electronics corporation ? 720 palomar avenue ? sunnyvale, ca 94085 t l 408 23 8200 f 408 33 128 l@ dlt i anddi l 1 displays AND501GST/gst-led 20 characters x 2 lines intelligent alphanumeric displays the AND501GST/gst-led devices are compact, lcd modules that have an on-board lcd controller and driver circuit. these devices can display 160 characters (numerals, letters, symbols and kana letters), as well as eight custom characters. features ? AND501GST: super twist technology ? AND501GST-led: stnwith led backlight ? low voltage, +5v single power supply ? controller on board (hd44780) ? rohs compliant ? 11 commands for control dot matrix dimensions mechanical characteristics item speci?cation unit outline dimensions 116 (h) x 37 (v) x 11 (d) mm character size 3.20 (h) x 5.55 (v) mm viewing area 83.0 (h) x 18.6 (v) mm dot size 0.60 (h) x 0.65 (v) mm dot pitch 0.65 (h) x 0.70 (v) mm absolute maximum ratings item symbol rating unit supply voltage v dd 7.0 v input voltage v in 0 v in v dd v led forward current i f 275 ma led reverse voltage v r 8v led power dissipation p d 1270 mw 0.05 0.60 0.50 3.20 0.05 0.65 0.40 5.55 operating temperature t op 0 to +50 c storage temperature t stg C20 to +60 c electrical characteristics (ta = 25c) item symbol min. typ. max. unit supply voltage v dd 4.75 5.0 5.25 v gnd C0C led forward voltage (i f = 200 ma) v f 3.8 4.1 4.4 v led reverse current (v r = 8 v) i r C C 2.2 ma input voltage high level (v dd = 5.0 v) v ih 2.2 C C v low level (i oh = 0.2 ma) v il 0 C 0.6 output voltage high level (-i oh = 0.2 ma) v oh 2.4 C C v low level (i ol = 1.2 ma) v ol C C 0.6 optical characteristics (ta = 25?c, = 0, = 0 ) item symbol min. typ. max. unit viewing angle -10 25 40 degree contrast k C 3.0 C C turn on t on C 200 400 ms turn off t off C 250 400 ms absolute maximum ratings (continued) item symbol rating unit product specifications contained herein may be changed without prior notice. it is therefore advisable to contact purdy electronics before proceeding with the design of equipment incorporating this product. ? rohs compliant
intelligent character display AND501GST/gst-led displays purdy electronics corporation ? 720 palomar avenue ? sunnyvale, ca 94085 t l 408 23 8200 f 408 33 128 l@ dlt i anddi l 2 power supply lcd panel is driven by the voltage v dd Cv o , so an adjustable v o is required for contrast control and temperature compensation. power supply block diagram block diagram dimensional outline connector pin assignment pin no. signal function 1 gnd ground 2 v dd +5 power supply 3 v d lcd drive voltage 4rs h data input l command input 5 r/w read/write 6 e enable signal 7 db0 data bus db0-db7 are for 8-bit operation db4-db8 are for 4-bit operation 8 db1 9 db2 10 db3 11 db4 12 db5 13 db6 14 db7 15 led led anode 16 led led cathode temperature variations temperature v dd Cv o 0c 4.80 +25c 4.65 +50c 4.35
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