HY204XX01 20 char x 4 line 1 external dimension and display pattern * led backlight version=9.4 ** led backlight version=14.2 2 mechanical data 5 absolute maximum ratings 3 pin configuration 6 electrical characteristics (ta=25 ) spec. value pin symbol signal description item symbol condition min. typ. max. unit 1 v ss gnd (0v) supply voltage (logic) v dd - v ss 4.5 5.0 5.5 v 2 v dd power supply supply current (logic) i dd v dd =5v - 0.8 2.0 ma 3 v o supply voltage lcd driving ?high? v ih - 2.2 - v dd v 4 rs register select low = instruction, high = data input voltage ?low? v il - -0.3 - 0.6 v ?high? v oh -i oh =0.2ma 2.4 - - v 5 r/w read/write low = mpu to lcm, high = lcm to mpu output voltage ?low? v ol i ol =1.2ma - - 0.4 v 6 e enable r/w= low : data are talking over at falling edge r/w=high : data can be read at e=1 lcd operating voltage v dd - v o 4.2 - 4.4 (7.8) 4.6 - v 7 ~ 14 db 0 to db 7 data bus-software selectable 4 or 8bit mode 15 a anode of led unit 16 k cathode of led unit supply voltage lcd drive i o v dd =5v, ta =2 5 - 1.0 1.5 ma note : ( ) value is high reliability type 4 block diagram 7 backlighting characteristics (ta=25 ) led item specification unit parameter symbol min. max. unit module size (wht) 98.060.09.2 (led:14.2) mm supply voltage (logic) v dd - v ss -0.3 7.0 v viewing area (wh) 76.025.2 mm supply voltage (driver) v o v dd - 12 v dd + 0.3 v character font (wh) 57 with cursor dots input voltage v in -0.3 v dd + 0.3 v character size (wh) 2.954.75 mm character pitch (wh) 3.555.35 mm dot size (wh) 0.550.55 mm item symbol condition min. typ. max. unit supply voltage v led - - 4.0 4.2 v power consumption p led i f =180ma - 720 - mw luminous i v i f =180ma - - - cd/m 2
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