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Seiko Instruments G1216B1N000 manual

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Table of contents for the manual

  • Page 1

    AN.No.G121 6B1N000- 3D0E LIQUID CRYSTAL DISPLA Y MODULE G 1 2 1 6 B 1 N 0 0 0 USER’S M ANUA L Seiko Instruments Inc.[...]

  • Page 2

    AN.No.G121 6B1N000- 3D0E - i - This manual pr ovides t echnic al infor mation c overin g functio ns and operat ional instruc tions for the G1 216 liqu id cr ystal disp la y modules m ade b y Seiko Instrum ents Inc. Pleas e read throu gh this m anual bef ore operat ing the product. Distributi on of this m anual to third p ar ties f or a n y purpos e[...]

  • Page 3

    AN.No.G121 6B1N000- 3D0E - ii - CONTENT S 1. GENERAL 1.1 General ..................................................................................................... 1 1.2 Features.................................................................................................... 1 1.3 Absolute Maxim um Ratings (excluding LED bac klight) .........[...]

  • Page 4

    AN.No.G121 6B1N000- 3D0E - 1 - 1. GENERAL 1.1 General The G1216 is a ver y thin LC D m odule on whic h a f ul l-dot m atrix LCD pan el and a CMO S IC dr iver are integrate d. The LCD panel used here features wide viewi ng angle an d high co ntrast. T his f ull dot configur ation al lows a wide variet y of patterns to be dis pla yed dependin g upon [...]

  • Page 5

    AN.No.G121 6B1N000- 3D0E - 2 - 1.3 Absolute Maxim um Ratings (exclud ing LED b acklight) Vss = 0 V - 0.3 V DD -1 9.0 -0.3 -20 -30 +20 +20 Ta = 2 5 C 50 10%RH 65%R H 48 hrs 1000 hrs 7.0 V DD + 0 .3 V DD + 0 .3 +70 +80 +85 +65 V V V C C %RH %RH V DD V LC V IN T opr T stg Pow er suppl y vo l t a ge Inpu t vol tage Op erat ing te mper atu re Stor age t[...]

  • Page 6

    AN.No.G1216B1N000-3D0E - 3 - 1.6 Optical Characteristics Note 4 Note 3 40 100 630 2300 100 200 1000 3500      3.5 2.5 Refer to notes 1 and 2       -15   -20    15 30  50 70 -20 ° C 25 ° C Response time θ = 0 ° ∅ = 0 ° Vopr=14.0 V θ = 0 ° ∅ = 0 ° Vopr=13.0 V t on t off t on t off 25 ° C[...]

  • Page 7

    AN.No.G1216B1N000-3D0E - 4 - Brightness of non-selected dot (reflection) B 2 C = Brightness of selected dot (reflection) B1 t off t on Selected status (display ON) 10% B 2 B 1 0 (%) Operating voltage(V) Brightness for selected dot Brightness curve for non- selected dot Non-selected status 100% 90% V opr : Operating voltage t on : Response time (ris[...]

  • Page 8

    AN.No.G1216B1N000-3D0E - 5 - (2) Electrical and optica l characteristics V mA 4.4 0.9 4.1  3.8  I F =90 mA V R =8 V V F I R Forward voltage Reverse current Ta = 25 ° C Item Symbol Meas. condition Max. Typ. Min. Unit (3) LED backlight connection diagram Number of LED chips=20 LEDC LEDA (4) Brightness (panel upper side) nit  2.0 1.0 Surface[...]

  • Page 9

    AN.No.G1216B1N000-3D0E - 6 - 1.9 Dimensions Unit: mm General dimensional tolerance: ± 0.5 Power supply voltage: +5.0 V GND: 0 V LC drive voltage Data bus (LSB) Data bus Data bus Data bus Data bus Data bus Data bus Functions DB 7 CS1 CS2 RST R/W D/I E F GND LEDA LEDC Data bus (MSB) Chip select (1) Chip select (2) Reset Read/ Write Data/Instruction [...]

  • Page 10

    AN.No.G121 6B1N000- 3D0E - 7 - 2. CIRCUIT CONFIGURATION 2.1 Block Diagram This pr oduct consis ts of t wo HD6120 2 segm ent drivers, a n HD6120 3 comm on driver and a bias voltage g enerator . Figure 2 shows the block diagram . CS2 RST, R /W , D / I , E DB 0 to DB 7 V DD CS1 V SS 64 128 64 f ull dot m atrix LCD Segment Driver 1 V LC V a , V c , V d[...]

  • Page 11

    AN.No.G121 6B1N000- 3D0E - 8 - 2.2.1 Block Diagram ( Segment Dr iver) In put a nd Outp ut Buffer Instruction Register X, Y-Address Count er Z-Address Count er Disp lay Star t Li ne Register Busy Flag Disp lay Data RA M 4096 bi t CS R/W D/I DB 0 to DB 7 E LC Dri v er Dis pl ay ON /OFF M FRM CL 1 RST Inp ut Register Outpu t Register Dis pl ay D ata L[...]

  • Page 12

    AN.No.G121 6B1N000- 3D0E - 9 - 2.2.2 Functions and Oper ations of Main Blocks (1) Interfac e Control U nit The interf ace contr ol unit c onsists of the fol lowing b lock s: Input and output buf fer Input and output reg ister Instructi on regis ter The above b lock s are selec ted accor ding to th e follo wing com binatio ns of R/W and D/I signa ls[...]

  • Page 13

    AN.No.G121 6B1N000- 3D0E - 10 - In order to r ead the con tent of the outp ut register, t he Chip Selec t must be selec ted, D/I must be 1, and R/W mus t be 1. W hen executing the “Rea d” instr uction, the contents of the output re gister stored at that tim e are o utput during the tim e that “E” is 1. W hen “ E” falls, dis pla y data o[...]

  • Page 14

    AN.No.G121 6B1N000- 3D0E - 11 - (4) Displa y start line register The displa y st art line register is a register whic h deter mines the line a ddress ( see Figure 6) for wh ich data is displa yed on the top lin e of the LCD s creen when displ aying th e contents of the dis pla y data RAM on the LCD screen. It is also used to sc roll the disp lay. T[...]

  • Page 15

    AN.No.G121 6B1N000- 3D0E - 12 - 62 63 64 1 2 3 4 5 COM62 COM63 COM64 0 0 0 1 1 1 1 1 1 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 1 1 1 1 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 1 1 1 1 1 1 0 0 0 11111 00000 0 0 0 0 0 0 0 0 0 0 1 0 0 DB 0 (LSB) DB 1 DB 2 DB 3 DB 4 DB 5 DB 6 DB 7 (MSB) Y 0 Y 1 Y 2 Y 3 Y 4 Y 61 Y 62 Y 63 X=1 X=2 X=7 X = [...]

  • Page 16

    AN.No.G121 6B1N000- 3D0E - 13 - Y-addres s counter This c ounter sets th e addres s by instr uction and is a utomatic ally adva nced by the r ead/wr ite operatio n. Count ing is p erform ed b y looping t he values 0 to 63. 2.3 Comm on driver (HD6 1203) The comm on driver is a 64 dr ive ou tput CMO S IC. Incorpor ating a n oscill ation circu it, thi[...]

  • Page 17

    AN.No.G121 6B1N000- 3D0E - 14 - 3. OPER A T ING INST RUCTIONS 3.1 Term inal Functions 8 I/O MPU Com m on ter m inal f or tris tate inp ut and outp ut, and data b us. Funct ion s Destin atio n I/O QTY Signal DB 0 to DB 7 E 1 Enabl e W rite (R/W =0):Latc hes data of DB 0 to DB 7 at the fal l of E. Rea d (R/W =1):Outpu ts data to D B 0 to DB 7 whil e [...]

  • Page 18

    AN.No.G121 6B1N000- 3D0E - 15 - 3.2 Tim ing Character istics t f t CYC t CYC R / W 2.4V 0.4V t DDR t DHR t AH t AH 2.0V 0.8V t AS t AS 2.0V 0.8V t DHW t DSW t AS t AS 2.0V 0.8V t AH t AH t r 2.0V 0.8V P WEL 2.0V 0.8V P WE H D 1 Test point C R R L D 2 D 3 D 4 25 25 320 1000 450 450 140 10 200 10 20 t CYC P WE H P WE L t r t f t AS t AH t DSW t DDR t[...]

  • Page 19

    AN.No.G121 6B1N000- 3D0E - 16 - 3.3 Reset Funct ion Setting the RST term inal to a lo w leve l when t he po wer is o n allows f or in itial s etup. Display OFF Displa y start lin e regis ter: Set addr ess 0. W hile the RST rem ains at a low le vel, ins tructions other th an the stat us read cannot be accept ed. Execute other instr uctions after con[...]

  • Page 20

    AN.No.G121 6B1N000- 3D0E - 17 - 3.4 Instructions 3.4.1 Gen eral Instructions are l isted on T able 2. Ins tructions other t han the St atus R ead instruc tion wi ll not be executed if they are sent while another instruc tion is alr ead y being exec uted. T he busy fl ag is “1” when executing t he instruc tion. Chec k wheth er or not th e flag i[...]

  • Page 21

    AN.No.G121 6B1N000- 3D0E - 18 - (2) Display st art line DB 0 Code D/I DB 7 1 1 A A A A A A R/W 0 0 Upper bits Lower b its Sets the displ ay data RAM line a ddress ex pressed with binar y AAAA AA in the disp lay start lin e register. W hen dis p la ying the c on tent of the disp la y data RAM, th e d is pla y data on t he li ne address es which are [...]

  • Page 22

    AN.No.G121 6B1N000- 3D0E - 19 - (3) X- address (page) set DB 0 Code D/I DB 7 1 0 1 1 1 A A A R/W 0 0 Upper bits Lower b its The displa y data RA M “X” address (page) whic h is ex press ed with binar y AAA is set in the X -addr ess register. Follo wing write/r ead operati ons from the MPU are perf ormed on the specif ied X- address (page) until [...]

  • Page 23

    AN.No.G121 6B1N000- 3D0E - 20 - (5) Status read ON/OFF DB 0 Code D/I DB 7 RESET 0 0 0 0 R/W 1 0 0 BUSY BUSY: W hen BUSY=1, it m eans that the the m odule is operating inter nall y and the n ext instruc tion is not accep ted unt il BUS Y=0. After conf irm ing that BUSY= 0, it is necessar y to per form the next write. ON/OFF: Indicates th at the d is[...]

  • Page 24

    AN.No.G1216B1N000-3D0E - 21 - 3.5 Contrast Adjustment and Power Supply Example The LC panel viewing angle and display screen contrast are greatly affected by the ambient temperature. The recommended LC drive voltage (Vopr) at each temperature is given below. Vopr is a value at which the best display is visually obtained. This value does not always [...]

  • Page 25

    AN.No.G1216B1N000-3D0E - 22 - Limit resistance “ R ” is calculated using the following equation. The resistance becomes the value shown in Figure 11. R= V IN − V F I F V IN =Input voltage (power voltage)(V) V F =LED forward voltage (V) I F =Allowable LED forward current (A) ( Ω ) For this resistance value, the forward current becomes lower [...]

  • Page 26

    AN.No.G121 6B1N000- 3D0E - 23 - 3.7 MPU Connec tion Dia gram G1216 D/I RST R/W DB 0 to DB 7 E CS1 CS2 Z80A V DD V SS V LC Z80 PIO Decode r D0 to D7 A0 to A 15 RD IORQ M1 INT RD IORQ M1 INT A0 A1 A / B C / D CE D0 to D7 A0 to A 7 B1 B0 B2 B3 B4 B5 Figure 14 Exam ple of Connec tion to Z80 A[...]

  • Page 27

    AN.No.G121 6B1N000- 3D0E - 24 - 4 . PREC AUTIONS Sa fety If the LCD pan el is dam aged, be caref ul not to get the liq uid cr ystal in your m outh. If the l iquid cr y s tal touc hes your skin or c lothes, prom ptly wash it of f using s oap and p lent y of water. Handling Avoid s tatic el ectric ity, as it will d amage the C MOS LSI . The LCD pa ne[...]

  • Page 28

    AN.No.G121 6B1N000- 3D0E INDEX - A - Active d ispla y area ............................................................................. 2 - B - Bias volta ge gen erator ................................................................. 7, 13 Block diagram ................................................................................. 7, 8 Busy fl[...]

  • Page 29

    AN.No.G121 6B1N000- 3D0E - L - LC drive volt age ........................................................................... 6, 21 LC panel l ife tim e................................................................................ 4 LED back light charac terist ic s ............................................................. 4 - O - Operating t [...]

  • Page 30

    Seiko Instruments Inc. Head Office Components Overseas Mark et i ng & Sales Department 1-8, Nakase, Miham a-ku, Chiba-s hi, Chiba 261, Japan Phone: 043-211-1213 FAX: 043-211-8035 Seiko Instru ments U.S.A . Inc. Electroni c Com ponents Division 2990 W. Lomita Blvd., Torrance Calif. 90505, USA Phone: 310-517-7770 FAX: 310- 517-7792 Seiko Instru m[...]