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ET6202 rev 1.1 2004-6-4 1/14 etek microelectronics c ontrol led drive circuit overview ET6202 is 1 / 7 to 1 / 8 duty cycle control of the led display driver circuit. by pa r ag r aph 11 output, the output gate 6, pa r ag r aph 1 / output gate, a display memo r y, cont r ol ci r cuit, key scan ci r cuit composed of a single-chip high- r eliability of the exte r nal led d r i v e r ci r cuit. se r ial data 4-wi r e se r ial inte r face into the ET6202, the use of sop28 package. features z cmos t echnology z low-powe r z a v a r iety of display modes : choice of settings, and the numbe r of spaces ( 4 to 7, 10 to 13 ) z scan button : 10 2 mat r ix z 8 le v els of b r ightness ad j ustment ci r cuit z 4-wi r e se r ial inte r face z package fo r sop28 pin assignment 2 3 4 5 6 7 8 1 10 11 12 13 14 15 16 9 28 27 26 25 23 22 21 20 19 18 17 24 osc di / o cl k st b k1 k2 vd d sg1 / ks1 sg2 / ks2 sg3 / ks3 sg4 / ks4 sg5 / ks5 sg6 / ks6 sg7 / ks7 sg8 / ks8 sg9 / ks9 sg1 0 / ks1 0 sg1 2 / gr7 sg1 3 / gr6 sg1 4 / gr5 vd d gn d gn d gn d gr 1 gr 2 gr 3 gr 4 ET6202 www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 2/14 pin d escri p tion pin na me i/o d escri p tion o f t h e f unction 1 osc i oscillation input po r t to connect a r esisto r to dete r mine the oscillation f r e q uency 2 di/o i/o data input and output ports (n-channel open drain), the clock in the serial data output falling, in the clock rising edge of the serial data input. 3 clk i c lock input port, w hen read in the rising edge of the serial data, and in falling output w hen the nu mb er a ccording to 4 stb i s erial interface filtering, falling in the s t b input data as an order. ( e x ternal pull-do w n po w er r esistance) 5 6 k1 k2 i k e y input data port, the port on the i m portation of these data sho w that there is locked at the end of the c y cle e nd 22 25 28 gnd g rounding pin 8 17 sg1/ks1 sg10/ks10 o p aragraph output port ( p -channel open drain), can also b e used as ke y s input scanning vdd p o w er s uppl y 19 20 23 24 26 27 gr6 gr1 o g ate output port i / o configuration t he logical part of the i / o diagra m b elo w . 1 . input port : c l k , s t b & din vd d gnd 18 sg12/gr7 o p aragraph / output port gate 7 21 n um b er et6 202 www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 3/14 2. i nput: k 1 ~ k 2 vd d gnd 3 . o utput ports: d ou t , gr 1 ~ gr4 vd d gnd 4. outputs: sg1 ~ sg10 vd d gnd www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 4/14 5. gr5,gr6 a nd sg12/gr7 vd d gnd f unctional b loc k dia g ra m c ontrol show memory ti m in g g enerator k ey scan m atri x m e m ory c rystal serial data interface b ri g htness adjust m ent circuit r osc gnd p ara g raph driver / s can k ey driver / g ate driver sg1/ks1 sg2/ks2 sg3/ks3 sg4/ks4 sg5/ks5 sg6/ks6 sg7/ks7 sg8/ks8 sg9/ks9 sg10/ks10 sg12/gr7 gr1 gr2 gr3 gr4 sg14/gr5 sg13/gr6 di/o clk stb k1 k2 vdd gnd www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 5/14 functions o rder s t b ports in the state b y the high-lo w , the i m portation of an order b y the din port of the first b y te ( b 0 ~ b 7 ). if the data or the order in the trans m ission f or so m e reason, s t b is set to port, serial co mm unications are to b e initiali z ed, the data is input / co mm and b e considered in v alid. o rder 1: displa y m ode co mm and set ET6202 pro v ides as follo w s t w o displa y m odes : a co mm and in the port of the s t b b y the state after the high-lo w b y the din port to lose ET6202 into the first b y te ( b 0 ~ b 7 ). f or these orders, the no. 3 to no. 6 ( b 2 ~ b5 ) are ig - nored, 7 and 8 ( b6 ~ b7) 0. display mode command set used by the decision, gate number (4 to 7, 10 to 13). must show that an order to continue to make the show. if you choose the same mode settings, not to implement the order, so there will be no show. when the electric power, the choice of 10 7-bit mode. msb lsb 0 0 b1 b0 b2 ~ b5 no assignment displa y m ode : b 1 for 0 , b 0 to 0:1 3 paragraph 4 b its b 1 for 0 , b 0 to 1:12 paragraph b it 5 b 1 for 1 , b 0 to 0:11 paragraph b it 6 b 1 for 1 , b 0 1:10 paragraph b it 7 o rder 2: s et the order data data set is the order of i m ple m entation of the ET6202 read and w rite data. t he first order of 5 and 6 ( b4 , b5 ) are ignored, 8 - b it ( b 7 ) 0 , no. 7 ( b 6 ) is set to 1 . w hen the electric po w er suppl y w hen the first 4 to a ( b3 ~ b 0 ) should b e set to 0 msb lsb 0 1 b3 b2 b1 b0 b4, b5 non-assignment mode : b3 0 : nor mal mode of ope ration b3 1 : test mode inc re mental mode add ress settings ( mode ) : b2 0 : afte r the data into the incre mental add ress b2 1 : add ress the sa me read and w rite data mode : b1 fo r 0 , b0 0 : w rite data to the displa y mode b1 fo r 1 , b0 0 : reading key scan data www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 6/14 ET6202 ' s ke y scan m atri x scan b utton and enter the data storage ram t he ET6202 is a ke y scan m atri x , as follo w s fro m the 10 2 arra y co m posed of : k1 k2 sg1 / sg2 / sg3 / sg4 / sg5 / sg6 / sg7 / sg8 / sg9 / sg1 0 / ks1 ks2 ks3 ks4 ks5 ks6 ks7 ks8 ks9 ks10 each scan ke y input data stora ge as follo ws, by an o rder fro m the highest-read was read out. when the high data ( b0 ) was read out, the ne xt lowest data ( b7 ) was read out. k1??????k2 k1??????k2 sg1/ks1 sg2/ks2 x sg3/ks3 sg4/ks4 x sg5/ks5 sg6/ks6 x sg7/ks7 sg8/ks8 x sg9/ks9 sg10/ks10 x b0?????.b1 b3??????b4 b5??????b7 r ead order notes : b5 ~ b 7 no definition. o rder 3 : a ddress set up a co mm and a ddress set up a co mm and is set up for displa y m e m or y address. if the address is 00 h ~ 0 d h , then the effecti v e address. if the address is 0e h a ddress or higher, the data is in v alid unless once again set the correct address. w hen the electric po w er, to address 00 h . p lease refer to the chart b elo w . msb lsb 1 1 b3 b2 b1 b0 b4 , b5 non-assign m ent b 0 to b3 address 00 h ~ 0 d h www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 7/14 displa y m ode and the address of the ram displa y ram m e m or y through the serial interface fro m the e x ternal de v ice to input data ET6202 . ET6202 of ram address is as follo w s ( 8 units). sg1??????sg4 sg5??????sg8 sg9??????sg12 00h l 00h u 01h l dig1 02h l 02h u 03h l dig2 04h l 04h u 05h l dig3 06h l 06h u 07h l dig4 08h l 08h u 09h l dig5 0ah l 0ah u 0bh l dig6 0ch l 0ch u 0dh l dig7 b0?????.b3 b4??????b7 xxh l xxh u l o w 4 h igh 4 o rder 4 : displa y c ontrol o rder displa y c ontrol co mm and to control the displa y s w itches can also b e used to set pulse w idth. p lease refer to the ta b le b elo w . w hen the electric po w er, setting 1 / 16 the w idth letter and the sho w closed (ke y stop scanning). msb lsb 1 0 b3 b2 b1 b0 b4 , b5 non-assign m ent s ho w : b3 0: t he sho w closed (to scan b utton) b3 1: o pen sho w di mm ing le v el : 000: w idth = 1 / 16 001: w idth = 2 / 16 010: w idth = 4 / 16 011: w idth = 10/16 100: w idth = 11/16 101: w idth = 12/16 110: w idth = 1 3 /16 111: w idth = 1 4 /16 www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 8/14 s can ti m ing and sho w b ond plans to scan and displa y ti m ing is as follo w s. a ke y scan c y cle includes 2 . 10 2 m atri x of data stored in ram . sg out p ut dig1 dig2 dig3 dign dig1 1 a =tdisplay n+1 g1 g2 g3 gn tdisplay=500us k e y scan data www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 9/14 s erial co mm unication for m at t he chart sho w n in the ET6202 is a serial co mm unication for m at. d ou t port is an n-channel open drain output port, so b e sure to add a guarantee p ull-up resistor ( 1 k ~ 10 k ) to d ou t port. if the data continue st b din 1 2 3 7 8 b0 b1 b2 b6 b7 clk r ecei v er (data / w rite operations co mm and) t rans m ission (read data) stb din 1 2 3 7 8 b0 b1 b2 b3 clk b4 b5 b6 b7 4 5 6 1 2 3 4 5 6 b0 b1 b2 b3 b4 b5 t w a i t r eading set up a co mm and data s tart reading data t w a i t ( l atenc y ) 1 s 1s it is w orth noting that w hen reading data, the instructions of the eighth of the clock rising edge to read the data then the first falling edge of the clock m ust b e greater than or 1 s m ean w aiting ti m e t wait www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 10/14 c on v ersion characteristic w a v efor m ET6202 con v ersion w a v e characteristics are as follo w s. pw s t b t clk- stb fosc 50% t setup t h o l d t p z l t p l z t t z l t t l z t t z h t t h z 90% 10% 10% 90% osc st b clk din dout gn sn pw c l k pw c l k pw c l k (clock pulse) 400ns pw s t b (filter width) 1s t setup (data setup time) 100ns t h o l d (data hold time) 100ns t clk-stb (filter clock time) 1s t t h z (fall time) 10s t t z h (rise time) 1s t p z l (transmission delay) 100ns fosc = oscillation frequency t p l z (transmission delay) 300ns t t z l <1 s t t l z <10 s www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 11/14 notes : t he test conditions are as follo w s. t t h z ( p ull-do w n resistance = 10 k , load capacitance = 3 00 pf) t t l z ( p ull-up resistor = 10 k , load capacitance = 3 00 pf) a ppl y 1 . input data sho w o rder 1 o rder 2 o rder 3 o rder 4 data 1 data n stb clk din o rder 1: displa y m ode co mm and set o rder 2: s et the order data o rder 3 : a ddress set up a co mm and data 1 ~ n : m o b ile data sho w that (the largest of 1 4 b y tes) o rder 4 : displa y c ontrol o rder 2 . e nter a specific address o rder 1 o rder 2 o rder 3 o rder 4 data stb clk din o rder 2: s et data o rder 3 : a ddress s etting data : t he data sho w www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 12/14 s oft w are flo w chart s tart dela y 200 ms s et o rder 2 ( w rite data) s et 3 order q ing displa y ram ( s ee note) s et o rder 1 s et o rder 4 ( 88 h - 8 fh : open the sho w ) m ain progra m s et o rder 2 (including the ke y ti m e to scan the data and w rite data) s et 3 order s et o rder 1 s et o rder 4 e nd initiali z ation s et m ain c y cle www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 13/14 notes : 1 . o rder 1: displa y m ode 2 . o rder 2: s et data 3 . o rder 3 : a ddress s etting 4 . o rder 4 : displa y c ontrol w hen the po w er suppl y i c of the first po w er-on, the displa y ram in the content has not b een defined, so b e sure to e m pt y the initiali z ation settings in the displa y ram . l i m i t p a r a m e t e r 1 . ma x imum ra tings ( t a = 25 c o gnd=0v p a r a meters s y m b ol ra nge u nit t o pro v ide v oltage v d d -0.5 +7 v l ogic input v oltage v i -0.5 v d d +0.5 v i o l g r +250 ma dri v e output current i o h s g -50 ma m a x i m u m output current i total 400 ma 2. r ecommended b y t h e wor k ing conditions ( t a = -20 +70 gnd = 0v ) p a r a meters s y m b ol m inimum t yp ic a l ma x u nit logic supply voltage v d d 4.5 5 5.5 v d y na m ic current (see note) i dddyn 5 ma ??? v i h 0.8v d d v d d v ??? v i l 0 0.3v d d v ??? =80h ???? & vdd = 5v gnd = 0v ta = 25 ? ? ? iohsg1 v0=vdd-2v sg1 sg11, sg12/gr7 -20 -25 -40 ma ?? iohsg2 v0=vdd-3v sg1 sg11, sg12/gr7 -25 -30 -50 ma ?? iolgr v0=0.3v gr1 gr6, sg12/gr7 100 140 ma ?? ioldou t vo = 0 . 4 v 4 ma ??? ?? itolsg v0=vdd-3v sg1 sg11, sg12/gr7 +5 % ??? vih 0.8vdd 5 v ??? vil 0 0.3vdd v ? fosc r=51k 350 500 650 khz k1 k2 rkn k1 k2 vdd=5v 40 100 k ? www.datasheet.co.kr datasheet pdf - http://www..net/
ET6202 rev 1.1 2004-6-4 14/14 r eference to the road m ap a pplications sw29 sw28 osc di / o cl k st b k1 k2 vd d sg1 / ks1 sg2 / ks2 sg3 / ks3 sg4 / ks4 sg5 / ks5 sg6 / ks6 sg8 / ks8 sg9 / ks9 sg1 0 / ks1 0 sg1 2 / gr7 sg1 3 / gr6 sg1 4 / gr5 vd d gn d gn d gn d gr 1 gr 2 gr 3 gr 4 51k di gi t 1 di gi t 2 di gi t 3 di gi t 4 di gi t 5 di gi t 6 seg1 seg2 seg3 seg4 seg5 seg6 seg7 seg8 seg9 seg1 0 seg1 2 11 6 led 0.1uf mcu 10k sw26 sw25 sw23 sw22 sw20 sw19 sw17 sw16 sw14 sw13 sw11 sw10 sw8 sw7 sw5 sw4 sw2 sw1 s1 s2 s3 s4 s5 s6 s8 s9 s1 0 s1 2 g1 g2 g3 g4 g5 g6 g1 g2 g3 g4 g5 g6 s1 s2 s3 s4 s5 s6 s7 s8 s9 s1 0 s1 2 ks1 ks2 ks3 ks4 ks5 ks6 ks7 ks8 ks9 ks10 +5 +5 +5 10k sg7 / ks7 s7 10k le d cathode connection a b c d e f g h com/digital grid led a b c d e f g h seg1 seg2 seg3 seg4 seg5 seg6 seg7 seg8 1. gnd vdd ???? 0.1f ET6202 ??? 2. nc ??? 10 ?? * ? www.datasheet.co.kr datasheet pdf - http://www..net/

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