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document no. customer: shenhui technology model: SVM802BS cob . address: block513, 4 th floor, beguiling industrial area shenzhen, china tel: 0755-25843715 fax: 0755-82262915 dsg?d app?d
character matrix module shenhui technology co., ltd. document no. revision document rev. 0 data sheet no. summary new
character matrix module shenhui technology co., ltd. document no. contents document rev. 0 section/sub section pages rev. 1 basic specifications 1 0 1.1 display specifications 0 1.2 block diagram 0 1.3 pin connection 0 2 absolute maximum ratings 1 0 3 electrical characteristics 5 0 3.1 dc characteristics 0 3.2 timing chart 0 3.3 ac characteristics 0 3.4 explanation of command 0 4 operating characteristics 4 0 4.1 initializing by instruction 0 4.2 display data ram (ddram) 0 4.3 relationship between ddram and cgrom 0 4.4 cgrom character code table 0 5 optical characteristics 3 0 5.1 optical characteristics 0 5.2 definition of optical characteristics 0 6 reliability test 1 0 6.1 content of reliability test 0 6.2 failure judgment criterion 0 7 precautions for use of lcd module 2 0 7.1 handling precautions 0 7.2 storage precautions 0 7.3 design precautions 0 7.4 other 0
character matrix module shenhui technology co., ltd. document no. contents document rev. 0 section/sub section pages rev. 8 visual inspection 1 0 8.1 air bubbles 0 8.2 black/white spots 0 8.3 black/white lines 0
character matrix module shenhui technology co., ltd. document specifications no. sheet 1/1 section 1. basic specifications rev. 0 1.1 display specifications a) display mode stn/tn, positive, reflective/transflective b) viewing angle 6 o?clock direction c) display 8 character x 2 line 1.2 block diagram 1.3 pin connection 1 2 no. symbol funcition 1 vss power supply 0v 2 vdd power supply +5v 3 vlcd operating voltage for lcd drive. 4 rs data/command selection input. rs= h data input. rs= l instruction input 5 r/w read/write selection input. rw = h read operation. rw = l write operation. 6 e read/ write enable signal. active high. when this signal is kept low, the data bus is fetched. 7 14 db0 db7 data bus 0~7 15 nc no connect 16 nc no connect com8 com8 lcd controller led ba c kli g ht seg40 mpu
character matrix module shenhui technology co., ltd. document specifications no. sheet 1/1 section 2.absolute maximum ratings rev. 0 2 absolute maximum ratings standard value. . items symbol test condition min max unit vdd 0 +7 v power supply voltage vlcd 0 +5.5 v input voltage v1 vss vdd v operating temperature top 0 +50 storage temperature tstg -20 +60
character matrix module shenhui technology co., ltd. document specifications no. sheet 1/5 section 3. electrical characteristics rev. 0 3.1 dc characteristics items symbol min. typ. max. unit terminal vdd 4.5 5.0 5.5 v vdd power supply voltage v0-vss 3.0 - 5.5 v v0 ?0?input voltage vil -0.3 - 0.6 v ?1?input voltage vih 2.2 - vdd v input leak current iil -150 -300 -500 ua *1 power supply current(*3) idd - 0.5 2.0 ma vdd *1: rs/[r/w]/e/db[7:0] *2 measuring condition vdd=5.0v 5% t=25 3.2 timing chart
character matrix module shenhui technology co., ltd. document specifications no. sheet 2/5 section 3. electrical characteristics rev. 0 3.3 ac characteristics 3.4 explanation of command 3.4.1 clear display code : clear all the display data by writing "20h" (s pace code) to all ddram address, and set ddram address to "00h"in the ac (address counter). return cursor to t he original status, namely, bring the cursor to the left edge on first line of the display. make entry mode increment (i/d = "1"). 3.4.2 return home code : return home is cursor return home instruction. set ddram address to "00h" in the address counter. return cursor to its original site and return display to its original status, if sh ifted. contents of ddram does not change. rs r/w db7 db6 db5 db4 db3 db2 db1 db0 l l l l l l l l l h rs r/w db7 db6 db5 db4 db3 db2 db1 db0 l l l l l l l l h x
character matrix module shenhui technology co., ltd. document specifications no. sheet 3/5 section 3. electrical characteristics rev. 0 3.4.3 entry mode set code : set the moving direction of cursor and display. when i/d = "1", cursor/blink moves to right and ddram address is increased by 1. when i/d = "0", cursor/blink moves to left and ddram address is decreased by 1. sh: shift of entire display when ddram read (cgram read/write) operation or sh = l, shift of entire display is not performed. if sh =h and ddram write operation, shi ft of entire display is performed according to i/d value (i/d = h : shift left, i/d= l: shift right). 3.4.4 display on / off control code : control display/cursor/blink on/off 1 bit register. d : display on/off control bit when d = "1", entire display is turned on. when d = "0", display is turned off, but display data remained in ddram. c : cursor on/off control bit when c = "1", cursor is turned on. when c = "0", cursor is disappeared in current display, but i/d register remains its data. b : cursor blink on/off control bit when b = "1", cursor blink is on, which perfo rms alternate between all the "1" data and display character at the cursor position. when b = "0", blink is off. 3.4.5 set cgram address code : set cgram address to ac. this instructi on makes cgram data available from mpu. rs r/w db7 db6 db5 db4 db3 db2 db1 db0 l l l l l l l h i/d sh rs r/w db7 db6 db5 db4 db3 db2 db1 db0 l l l l l l h d c b rs r/w db7 db6 db5 db4 db3 db2 db1 db0 l l l h acg5 acg4 acg3 acg2 acg1 acg0
character matrix module shenhui technology co., ltd. document specifications no. sheet 4/5 section 3. electrical characteristics rev. 0 3.4.6 cursor or display shift code : shift patterns according to s/c and r/l bits s/c r/l operation 0 0 shift cursor to the left, ac is decreased by 1 0 1 shift cursor to the right, ac is increased by 1 1 0 shift all the display to the left, cursor moves according to the display 1 1 shift all the display to the right, cursor moves according to the display 3.4.7 function set code : dl : interface data length control bit when dl = "1", it means 8-bit bus mode with mpu. when dl = "0", it means 4-bit bus mode with mpu. so to speak, dl is a signal to select 8-bit or 4-bit bus mode. when 4-bit bus mode, it needs to tr ansfer 4-bit data in two times. n : display line number control bit when n = "0", it means 1-line display mode. when n = "1", 2-line display mode is set. f : display font type control bit when f = "0", 5 7 dots format display mode when f = "1", 5 10 dots format display mode. 3.4.8 set ddram address code : set ddram address to ac. this instruction makes ddram data available from mpu. rs r/w db7 db6 db5 db4 db3 db2 db1 db0 l l l l l h s/c r/l x x rs r/w db7 db6 db5 db4 db3 db2 db1 db0 l l l l h dl n f x x rs r/w db7 db6 db5 db4 db3 db2 db1 db0 l l h add6 add5 add4 add3 add2 add1 add0
character matrix module shenhui technology co., ltd. document specifications no. sheet 5/5 section 3. electrical characteristics rev. 0 when 1-line display mode(n = 0), ddram address is from "00h" to "4fh". in 2-line display mode (n = 1), ddram address in the 1st line isfrom "00h" to "27h", and ddram address in the 2nd line is from "40h" to "67h". 3.4.9 read busy flag & address code : this instruction shows whether modul e is in internal operation or not. if the resultant bf is "1", it means the internal oper ation is in progress and you have to wait until bf to be low, and then the next instruction can be performed. in this instruction you can read also the value of address counter. 3.4.10 write data to ram code : write binary 8-bit data to ddram/cgram. the selection of ram from ddram, and cgram, is se t by the previous addre ss set instruction: ddram address set, cgram address set). ram set instruction c an also determine the ac direction to ram. after write operation, the address is aut omatically increased/decreased by 1, according to the entry mode. 3.4.11 read data from ram code : read binary 8-bit data from ddram/cgram. the selection of ram is set by the previous address set instruction. if the addre ss set instruction of ram is not performed before this instruction, the data that is read first is invalid , because the direction of ac is not determined. if you read ram data several times without ram address set instruction before read operation, you can get correct ram data from t he second, but the first data would be incorrect, because there is no time margin to transfer ram data. in case of ddram read operat ion, cursor shift instruction plays the same role as ddram address set instruction; it also transfer ram data to output data regi ster. after read operation address counter is automatically in creased/decreased by 1 according to the entry mode. after cgram read operation, display shift may not be executed correctly. rs r/w db7 db6 db5 db4 db3 db2 db1 db0 l h bf ac6 ac5 ac4 ac3 ac2 ac1 ac0 rs r/w db7 db6 db5 db4 db3 db2 db1 db0 h l d7 d6 d5 d4 d3 d2 d1 d0 rs r/w db7 db6 db5 db4 db3 db2 db1 db0 h h d7 d6 d5 d4 d3 d2 d1 d0
character matrix module shenhui technology co., ltd. document specifications no. sheet 1/4 section 4.opertating characteristics rev. 0 4.1 initializing by instruction 4.1.1 8-bit interface mode:
character matrix module shenhui technology co., ltd. document specifications no. sheet 2/4 section 4.opertating characteristics rev. 0 4.1.2 4-bit interface mode:
character matrix module shenhui technology co., ltd. document specifications no. sheet 3/4 section 4.opertating characteristics rev. 0 4.2 display data ram(ddram) 4.3 relationship between ddram and cgrom
character matrix module shenhui technology co., ltd. document specifications no. sheet 4/4 section 4.opertating characteristics rev. 0 4.4 cgrom character code table character generator rom: 8320bits (192 cha. x 5 x 7 dots) character generator ram: 64 x 8 bits (8 cha. x 5 x 7 dots)
character matrix module shenhui technology co., ltd. document specifications no. sheet 1/3 section 5.optical characteristics rev. 0 5.1 optical characteristics (reflective mode) item symbol temp min. typ max. unit condition vop vdd-vss 25 4.5 5 5.5 v tr 25 200 ms response time tf 25 80 ms contrast ratio k 25 6.7 reflective mode 38 deg. =0 34 deg. =90 38 deg. =18 0 viewing angle 25 38 deg. =270 cr r 2.0 panel only characteristics 1/16 duty, 1/5 bias 5.2 definition of optical characteristics 5.2.1 optical measuring equipment photo multi-meter light source 60 0 lcd panel thermostatic oven specification measuring condition luxmeter: lcd-5100(otsuka electronics) brightness measuring spot diameter =4.0mm .
character matrix module shenhui technology co., ltd. document specifications no. sheet 2/3 section 5.optical characteristics rev. 0 5.2.2 definition of viewing angle 5.2.3 definition of response time [measuring condition] vop= 2 50 50 vns vs + = = 0 =180 =270 =90 =0
character matrix module shenhui technology co., ltd. document specifications no. sheet 3/3 section 5.optical characteristics rev. 0 5.2.4 definition of contrast ratio brightness of non-selected condition (a) contrast ratio = brightness of selected condition (b) [measuring condition] vop= 2 50 50 vns vs + = = 0 driving voltage vop 50% vs50 vns50
character matrix module shenhui technology co., ltd. document specifications no. sheet 1/1 section 6.reliability test rev. 0 6.1 content of reliability test no. test item content of test condition environmental test 1 high temperature storage endurance test applying the high temperature for a long time 80 120h 2 low temperature storage endurance test applying the low temperature for a long time -30 120h 3 high temperature/humidity storage endurance test applying the high temperature and high humidity for a long time 80 &90% rh 100h 4 heat shock endurance test applying the low and high temperature cycles -30 < > 80 (1h) (1h) 1 cycle -30 / 80 5 cycle 6.2 failure judgment criterion after the above-mentioned test there should not exist conspicuous fa ilure of display quality and appearance. no degradation of the display readability. there should not have any abnormality of function.
character matrix module shenhui technology co., ltd. document specifications no. sheet 1/2 section 7.precaution for use of lcd module rev. 0 7.1 handling precautions a) the display panel is made of glass. do not subject it to a mechanical shock by dropping it from a high place, etc. b) if the display panel is damaged and the liquid crystal substance inside it leaks out, be sure not to get any in your mouth. if the substance comes into contact with your skin or clothes, promptly wash it off using soap and water. c) do not apply excessive force on the surface of display or the adjoining area of lcd module since this may cause the color tone to vary. d) the polarizer covering the display surface of the lcd module is soft and easily scratched. handle this polarizer carefully. e) if the display surface of lcd module cl oth with one of the following solvents. . isopropyl alcohol . ethyl alcohol solvents other than those mentioned above may damage the polarizer. especially, do not use water, ketone and aromatic solvents. f) when mounting the lcd module, make sure that it is free of twisting, warping and distortion. distortion has great influence upon display quality. also keep the shiftiness enough regarding the outer case. g) when install the lcd module, do not forcibly pull or bend the i/o cable. h) touching the ic of lcd module may cause abnormal di splay that cannot recover. should not touch the ic of lcd module. i) do not disassemble or process the lcd module. j) nc terminal should be open. do not connect anything. k) if the logic circuit power is off, do not apply the input signals. l) to prevent destruction of the elements by static electricity be careful to maintain an optimum work environment. be sure to ground the body when handling the lcd module. tools required for assembly, such as soldering irons, must be properly grounded. to reduce the amount of static electricity generated, do not conduct assembly and other work under dry conditions. the lcd module is coated with a film to protect the display surface. take care when peeling off this protective film since static electricity may be charged. please handle carefully, because the glass has a sharp edge. 7.2 storage precautions take care to minimize corrosion of the electrode. moisture condensation on a current flow in a high humidity a) environment accelerates corrosion of the electrodes. b) when storing the lcd module, avoid exposure to direct sunlight or to the light of fluorescent lamps. keep the lcd module in bags designed to prevent static electricity charging under low temperature / normal humidity conditions (avoid high temperature / high humidity and low temperature below 0 ). whenever possible, the lcd module should be stored in the same conditions in which they were shipped from our company.
character matrix module shenhui technology co., ltd. document specifications no. sheet 2/2 section 7.precaution for use of lcd module rev. 0 7.3 design precautions a) the absolute maximum ratings represent the rated value beyond which lcd module can not exceed. when the lcd module are used in excess of this fated value, th eir operating characteristics may be adversely affected. b) to prevent the occurrence of erroneous operation caused by the noise, attention must be paid to satisfy vil, vih specification values, including taking the precau tion of using signal cables that are short. c) the liquid crystal display exhibits temperature dependency characteristics. since recognition of the display becomes difficult when the lcd is used out of its designated operating temperature range, be sure to use the lcd within this range. d) we recommend that power supply lines (vdd) have over-current protection line.(fuse etc.) e) sufficiently notice the mutual noise interference occurred by peripheral devices. f) to cope with emi, take measures basically on outputting side. when fixing lcd module, which is consisted of glass panel, tcp fixes it at plastic case side. in case pcb is fixed, there is the possibility that the disconnection is occurred by somewhat stress. 7.4 other a) liquid crystal solidify under lo w temperatures (below the storage te mperature range) leading to defective orientation or the generation of air bubbles. air bubbles may also be generated if the lcd module is subjected to a strong shock at a low temperature. b) if the lcd module has been operating for a long time showing the same display pattern, the display pattern may remain on the screen as ghost images and a slight cont ract irregularity may also appear. a normal operating status can be regained by suspending use for some time it should be noted that this phenomenon does not adversely affect performance reliability. c) to minimize the performance degradation of the lcd modules resulting from destruction caused sections by static electricity, etc, take care to avoid touching the following sections when handing the module. terminal electrode sections
character matrix module shenhui technology co., ltd. document specifications no. sheet 1/1 section 8.visual inspection rev. 0 the module should operate: all points should be activated (on/off) independently. each physical point location should correspond to each software point location. no color defect inside visible area. no progressing glass crack. 8.1 air bubbles air bubbles between glass and polarizer. size diam. (mm) acceptable number in viewing area diam. q 0.2 2 *1 0.35 w q 0.05 0 l q 3 0.053 w>0.1 0

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