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??? s s s s h h h h e e e e n n n n zh zh zh zh e e e e n n n n ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . description description description description TM1628 is an led controller driven on a 1/7 to 1/8 duty factor. eleven seg m ent output l i nes, six grid output l i nes, 1 segment/gr i d output lines, one display m e m o ry, control circuit, key scan circuit are all incorporated into a single chip to build a high l y reliable peripheral device for a single chip m i crocomputer. serial data is fed to TM1628 via a three-line serial interface. housed in a 28-pin so package, t m 1628 pin assignments and application circuit are opti m ized for easy pcb layout and cost saving advantages. features features features features ? cmos technology ? low power consu m ption ? multiple display modes (12 se g m ent, 6 grid to 11 se g m ent, 7 grid) ? key scanning (8 x 2 matrix) ? 8-step dimming circuitry ? serial interface for clock, data input/output, strobe pins ? available in 28-pin, sop package application application application application ? micro-co m puter peripheral device ? vcr set ? c o mbi set block block block block diagram diagram diagram diagram sg1/ks1 sg2/ks2 sg3/ks3 sg4/ks4 sg5/ks5 sg6/ks6 sg7/ks7 sg8/ks8 sg9 sg10 sg 1 1 sg12/gr7 gr6 gr5 gr4 gr3 gr2 gr1 di/o sclk stb k1 k2 vdd gnd add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 1 key matrix me m ory t i m i ng ge n eration rc osc dis p lay me m ory segment driver key scan output grid driver control serial data in t erface led led led led dri dri dri dri v v v v er er er er tm tm tm tm 1 1 1 1 6 6 6 6 2 2 2 2 8 8 8 8 http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n zh zh zh zh e e e e n n n n ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . pin pin pin pin configuration configuration configuration configuration gnd grid1 grid2 gnd grid3 grid4 gnd vdd seg14/grid5 seg13/grid6 seg12/grid7 seg10 seg9 seg8/ks8 nc dio sclk stb k1 k2 vdd sg1/ks1 sg2/ks2 sg3/ks3 sg4/ks4 sg5/ks5 sg6/ks6 sg7/ks7 pin pin pin pin description description description description add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 2 pin name i/o description pin no. dio i/o data input output pin ( n-channel , open-drain) this pin outputs serial data at the falling edge of the shift clock. this pin inputs serial data at the rising edge of the shift clock (st a rting f rom the lower bit) 2 sclk i clock input pin this pin reads serial data at the rising edge and outputs data at the falling edge. 3 stb i serial interface stro b e pin the data in p ut a f ter the stb has f allen is processed as a com m and. w hen t his pin is "high", clk is ignored. 4 k 1 k2 i key data input pins the data sent to these pins are latched at the end of the display cycle.(internal pull-low resist o r) 5 6 gnd - ground pin 22 25 28 seg1-seg8 o seg m ent output pins (p - channel, open drain) also acts as the k ey source 8-15 seg9-seg 1 0 o seg m ent output pins (p-channel, open drain) 16 17 sg12-seg14 o seg m ent/grid output pins 18-20 vdd - power supply 21 grid1-gr i d 4 o grid output pins 23 24 26 27 1 no connection 1 1 28 2 tm1 tm1 tm1 tm1 6 6 6 6 28 28 28 28 27 3 26 4 25 5 24 6 23 7 22 8 21 9 20 1 0 19 1 1 18 1 2 17 1 3 16 1 4 15 http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n zh zh zh zh e e e e n n n n ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . func func func func t t t t ional ional ional ional description description description description com com com com m m m m ands ands ands ands a command is the first byte (b0 to b7) inputted to TM1628 via the din pin after stb pin has changed from high to low state. if for so m e reason the stb pin is set to high while d a ta or c o mmands are b e ing trans m itted, the serial com m unication is initialized, and the data/commands being trans m itted are considered invalid. command command command command 1: 1: 1: 1: display display display display mode mode mode mode setting setting setting setting commands commands commands commands TM1628 provides 2 display mode settings as shown in the diagram below: as stated earlier a c o m m and is the first one byte (b0 to b7) trans m itted to TM1628 via the din pin when stb is low. however, for these commands, the bit 3 to b i t 6 (b2 to b5) are ignored, bit 7 & bit 8 (b6 to b7) are given a value of 0. the display mode setting commands deter m ine the nu m ber of seg m ents and grids t o be used (12 to 11 s e gments, 6 to 7 grids). a display command on m u st be executed in order to resume display. if the same m ode setting is selected, no command e x ecution is take place, therefore, nothing happens. when power i s turned on, the 7-grid , 11-segment mo d e s is selec t ed. m s b l s b display mode settings 10 : 6 grids, 12 segments 11 : 7 grid s , 11 segm e nts com com com com m m m m and and and and 2: 2: 2: 2: data data data data sett sett sett sett in in in in g g g g com com com com m m m m an an an an d d d d s s s s the da t a setting commands executes the data write or data read modes for TM1628. the data setting comm a nd, the bits 5 and 6 (b4, b5) are ignored, b i t 7 (b6) is given the value of 1 while bit 8 (b7) is g i ven the value of 0. please refer to the diagram below. when power is turned on, bit 4 to bit 1 (b3 to b0) are given the value of 0. add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 3 0 0 - - - - b1 b0 no relevant http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n zh zh zh zh e e e e n n n n ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . m s b l s b no relevant TM1628 key key key key ma ma ma ma trix trix trix trix & & & & key key key key inp inp inp inp u u u u t t t t data data data data storage storage storage storage ram ram ram ram TM1628 key matrix consists of 8 x 2 array as shown below: k1 k2 each data entered by each key is s t ored as follows and read by a read command, starting from the last sign i fica n t bit. when the m o st significant bit of t h e data (b0) has been read, the l east significant bit of the next data (b7) is read. k1 k2 k1 k 2 b0 b1 b2 b3 b4 b5 b6 b7 note: b6 and b7 do not care. com com com com m m m m and and and and 3: 3: 3: 3: a a a a d d d d dress dress dress dress setti setti setti setti n n n n g g g g c c c c o o o o mma mma mma mma n n n n ds ds ds ds address setting commands are used to set the ad d r ess of the display memory. the address is c onsidered valid if it has a value of 00h to 0dh. if the address is set to 0eh or higher, the data is ignored until a valid address is add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 4 reading sequ e n c e sg8/ks8 sg7/ks7 sg6/ks6 sg5/ks5 sg4/ks4 sg3/ks3 sg2/ks2 sg 1 /ks1 sg1/ks1 sg2/ks2 x sg3/ks3 sg4/ks4 x sg5/ks5 sg6/ks6 x sg7/ks7 sg8/ks8 x 0 1 - - b3 b2 b1 b0 no data w rite/read mode settings 00 : write data to displaymode 10 : read key da t a m o d e s e t t i n g: 0: nor m al opera t ion 1: t est m o de address incr em ent m o de se tt i ng (di s play mo d e): 0: i n cre m ent address a f ter da ta h as b e e n writt e n 1: f i x e d add r ess http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n zh zh zh zh e e e e n n n n ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . set. when power is turned on, the addre s s is set at 00h. please r efer to the diagram below. m s b l s b address: 00h to 0dh display display display display mode mode mode mode and and and and ram ram ram ram addre addre addre addre s s s s s s s s data trans m itted from an external device to TM1628 via the serial interface are stored in the display ram and are a s signed addresses. t h e ram addresses of TM1628 are given below in 8 bits unit. sg1-sg4 sg5-sg8 sg9-sg12 dig1 dig2 dig3 dig4 dig5 dig6 dig7 b0- b3 b4- b7 lower 4 bits higher 4 bits command command command command 4: 4: 4: 4: display display display display control control control control commands commands commands commands the display control c o mma n d s are used to turn on or off a display. it also used to set the pulse width. please refer to the diagram below. when the power is turned on, a 1/16 pulse w i dth is selected and the displayed is turned off (the key scanning is started). add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 5 xxhl xxhu 00hl 00hu 01hl 02hl 02hu 03hl 04hl 04hu 05hl 06hl 06hu 07hl 08hl 08hu 09hl 0ahl 0ahu 0bhl 0chl 0chu 0dhl 1 1 - - b3 b2 b1 b0 no relevant http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n z z z z h h h h en en en en ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . m s b l s b not rele v a nt dim m ing quantity settings: 000: pulse width = 1/16 001: pulse width = 2/16 010: pulse width = 4/16 011: pulse width = 10/16 100: pulse width = 11/16 101: pulse width = 12/16 110: pulse width = 13/16 111:: pulse width = 14/16 display settings: 0: display off (key scan continues) 1: di sp l a y on scanning scanning scanning scanning and and and and display display display display timing timing timing timing the key scanning and display ti mi ng diagram is given below. one cycle of key scanning consists of 2 fram e s. the d a ta of the are 8x 2 matrix is stored in the ram. serial serial serial serial com com com com m m m m unication unication unication unication format format format format the following diagram shows the TM1628 serial com m unication format. t h e dout p in is an n - channel, open drain output pin, therefore, it add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 6 1 0 - - b3 b2 b1 b0 dim m ing 000: pulse 001: pulse 010: pulse 011: pulse 100: pulse 101: pulse 110: pulse 111:: pulse http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n zh zh zh zh e e e e n n n n ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . is highly rec o mme n d ed that an exter n al pull-up resistor (1 k oh m s to 10 ko h ms) must be c o nnected to dio. reception (data / command wr ite) on l y 1 byte if data co n t i nues t r ansmission (data / rea d ) where: twait (waiting time) > 1 s it m u st be noted that when the data is read, the waiting ti m e(t ) wait between the rising of the eighth clo c k that has set the command and the falling of t h e first clock that has read the data is greater or equal to 1 s. switching switching switching switching characterist characterist characterist characterist i i i i c c c c waveform waveform waveform waveform TM1628 switching characteristics waveform is given below. add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 7 data r ea d i n g starts data r ead com m and is s e t http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n z z z z h h h h en en en en ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . applications applications applications applications display me m o ry is updated by incre m ent i ng addresses. please refer to the following diagram. where: command 1: display mode setting command command 2: data setting command command 3: address setting command add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 8 http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n zh zh zh zh e e e e n n n n ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . data 1 to n : transfer display data (14 bytes ma x .) command 4: display control command the following diagram shows the wavefor m s when updating specific addresses. command1: data setting command command2: address setting command data : display data recommended recommended recommended recommended software software software software programming programming programming programming flowchart flowchart flowchart flowchart note: 1. command 1: display mode commands 2. command 2: data setting commands 3. command 3: address setting commands 4. command 4 : display control commands 5. when ic power is applied for the f i rst time, the contents of the display ram is not defined; thus, it is strongly suggested that the contents of t h e display ram m u st be clear e d during the initial setting. add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 9 http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n z z z z h h h h en en en en ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 10 http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n zh zh zh zh e e e e n n n n ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . absolute absolute absolute absolute maximum maximum maximum maximum ratings ratings ratings ratings (unless ot he rwise stated, ta=2 5 o c, gnd=0v) recommended recommended recommended recommended operating operating operating operating range range range range (unless otherwise stated, ta=-20 to +70 o c, gnd=0v) note: test c onditio n : s e t display c o ntrol commands = 80h (display t u rn off state & under no load) electrical electrical electrical electrical characteristics characteristics characteristics characteristics (unless ot he rwise stated, v dd =5v, gnd=0v, t a =25 o c) add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 11 para m eter sy m bol test condition min. typ. max. unit high-level output current iohsg1 vo=vdd- 2 v sg1 to sg11, sg12 / gr7 -20 -25 -40 ma iohsg2 vo=vdd- 3 v sg1 to sg11, sg12/gr7 - 25 -30 -50 ma low-level output current iolgr vo=0.3v gr1 to gr 6 , sg12/gr7 1 0 0 1 4 0 - ma low-level output current ioldout v o = 0.4v 4 - - ma se g m ent high-level output current tolerance itolsg vo=vdd- 3 v sg1 to sg11, sg12/gr7 - - + 5 - % high-level input voltage vih - 0.8vdd - 5 v par a m eter s y m bol min. t y p. max. unit logic supply voltage v dd 4.5 5 5.5 v d y n a m ic current ( see note ) i ddd y n - - 5 m a high-level input voltage v i h 0.8 v dd - v dd v low-level input voltage v i l 0 - 0.3v dd v par a m eter sy m bol rat i ngs unit sup p ly vol t a g e v d d -0.5 to +7 volts log i c input v o l t age v i -0.5 to v d d + 0.5 v o lts dri v er o u t pu t c u rrent i o l gr +250 m a i ohsg -50 m a ma x i m u m d ri v e r o u t p ut current / t o ta l i tot a l 4 0 0 m a http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n zh zh zh zh e e e e n n n n ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . application application application application circu circu circu circu i i i i t t t t add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 12 low-level input voltage vil - 0 - 0.3vdd v oscillation frequency fosc 350 500 650 khz k1 to k2 pull down resistor rkn k1 to k2 vdd=5v 2 - 15 kohm http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n zh zh zh zh e e e e n n n n ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . note: 1. the capacitor (0. 1 f 47 470uf) connected between the gnd and the vdd pi n s must be located as close as possible to the TM1628 chip. 2. the TM1628 power supply is separate from t he application system power supply. add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 13 http://www..net/ datasheet pdf - http://www..net/
??? s s s s h h h h e e e e n n n n zh zh zh zh e e e e n n n n ti ti ti ti t t t t a a a a n n n n m m m m i i i i c c c c r r r r o o o o e e e e l l l l e e e e c c c c t t t t r r r r o o o o n n n n i i i i c c c c s s s s c c c c o o o o . . . . , , , , l l l l t t t t d d d d . . . . add 5 2 2,5/ f ,bldg. no.4, k eji central r oad 2, so f t w a r e p a rk,high- t e ch i n dustri a l park,shen z h e n t e l 86-755-8 6 185092 w e b ww w . tit a n m ec.c o m fax 86-755-86185093 14 package package package package size size size size sop28: sop28: sop28: sop28: size label min.(mm) max.(mm) size label min.(mm) max.(mm) a 17.83 18.03 c4 1.043 typ a1 0.4064 typ d1 0.70 0.90 a2 1.27 typ d2 1.395 typ a3 0.51 typ r1 0.508 typ b 9.90 10.50 r2 0.508 typ b1 7.42 7.62 1 7 o typ b2 8.9 typ 2 5 o typ c1 2.24 2.44 3 4 o typ c2 0.204 0.33 4 10 o typ c3 0.10 0.25 ? all specs and applications shown above subject to change without prior notice. http://www..net/ datasheet pdf - http://www..net/

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