displays purdy electronics corporation ? 720 palomar avenue ? sunnyvale, ca 94085 7/20/07 tel: 408.523.8200 ? fax: 408.733.1287 ? sales@purdyelectronics.com ? www.anddisplays.com 1 AND501WGST/wgst-led 20 characters x 2 lines intelligent alphanumeric displays the AND501WGST/wgst-led devices are compact, lcd modules that have an on-board lcd controller and driver circuit and wide operating temperature stn fluid. these devices can display 160 characters (numerals, letters, symbols and kana letters). features ? AND501WGST: wide temp. super twist technology ? AND501WGST-led: wtstn with led backlight ? low voltage, + 5v power supply ? controller on board (hd44780) ? rohs compliant ? 11 commands for control dot matrix dimensions mechanical characteristics item speci?cation unit outline dimensions 116 (w) x 37 (h) x 11 (d) mm character size 3.2 (w) x 5.55 (h) mm viewing area 83.0 (w) x 18.6 (h) mm dot size 0.60 (w) x 0.65 (h) mm dot pitch 0.65 (w) x 0.70 (h) 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 operating temperature t op -20 to +70 c storage temperature t stg C30 to +80 c electrical characteristics (ta 25c) item symbol min. typ. max. unit supply voltage v dd 4.75 5.0 5.25 v gnd 0 high level in voltage (v dd = 5.0v) v ih 2.2 v low level in voltage (i oh = 0.2 ma) v il 0 0.6 v high level output volt. (Ci oh = 0.2 ma) v oh 2.4 v low level output volt. (i ol = 1.2 ma) v ol 0.6 v 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 2.2 ma optical characteristics (ta = 25?c, = 0?c, = 0) item symbol min. typ. max. unit viewing angle C10 25 40 degree contrast k 3.0 turn on t on 200 400 ms turn off t off 250 400 ms connector pin assignment pin no. signal function 1 gnd ground 2 v dd +5 power supply 3 v o lcd drive voltage 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 produc t. ? rohs compliant
intelligent alphanumeric displays AND501WGST/wgst-led displays purdy electronics corporation ? 720 palomar avenue ? sunnyvale, ca 94085 7/20/07 tel: 408.523.8200 ? fax: 408.733.1287 ? sales@purdyelectronics.com ? www.anddisplays.com 2 power supply the lcd panel is driven by the voltage v dd Cv o , so adjustable v o is required for contrast control and temperature compensation. power supply block diagram block diagram dimensional outline 4rs h data input l command input 5 r/w read/write 6 e enable 7 dbo data bus db0-db7 are for 8-bit operation db4-db7 are for 4-bit operation 8 db1 9 db2 10 db3 11 db4 12 db5 13 db6 14 db7 connector pin assignment (continued) pin no. signal function temperature variations temperature v dd Cv ee -20c 6.20 +25c 5.60 +70c 5.20 v dd v o gnd v dd C v o v dd C v o = lcd drive voltage vr10 to 20 k ? vr v dd (+5v) controller/ driver 40 e r/w rs v dd v o gnd db0-db7 8 16 88 40 20 lcd
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