SC162B VER2.1 CONTENT 1. General description --------------------------------------------------------------------------3 2. Maximum absolute limit---------------------------------------------------------------------3 3. Mechanical characteristics------------------------------------------------------------------3 a) Physical data b) External dimensions 4. Electrical characteristics---------------------------------------------------------------------4 a) DC characteristics b) AC characteristics c) EL backlight d) LED backlight 5. Operating Principles--------------------------------------------------------------------------7 a) Pin description b) Block diagram c) Instruction description 6. Operating Methods---------------------------------------------------------------------------13 a) Interface with MPU b) Power supply c) Operating example AKIHABARA INC. www.akiba-tech.com Page 2 of 17 SC162B VER2.1 1. General description SC162B, a dot-matrix character LCD module, design for displaying 2 line 16 row characters. Character font is 5X7 dots with cursor. The SC162B provides two types of interfaces to MPU: 4-bit and 8-bit interfaces. SC162B can includes EL or LED backlight for custom design. The custom can design for color of EL or LED backlight, viewing angle and LCD type. 2. Maximum absolute limit Characteristics Symbol Ratings Remark Operating Voltage VDD -0.3V to +7.0V Driver Supply Voltage VLCD VDD - 12V to VDD + 0.3V Input Voltage Range VIN -0.3V to VDD + 0.3V Operating Temperature TA 1 T a2 -10°C to+60°C -20°C to+60°C Normal temperature LCM Wide temperature LCM Storage Temperature T STO -25°C to+70°C Note: Stresses beyond those given in the Absolute Maximum Rating table may cause operational errors or damage to the device. 3. Mechanical characteristics a) Physical data ITEM Number of characters Standard value 16×2 Unit Module size Viewing area 122.0×44.0×14.0 99.0×24.0 mm mm Active area Character size 94.8×20.0 9.66×4.84 mm mm Character pith Approx. weight 10.34×6.0 mm g Drive method b) External dimensions 1/5bias 1/16 duty Remark 122.00 115.00 106.00 99.00 94.80 1.60 14.00 3.50 8.00 12.00 13.50 4.84 0.92 24.00 20.00 R0.5 5.00 35.50 44.00 37.00 1.16 1 7.48 R1.75 4PL PITCH2.54x15=38.10 R0.50 16PL AKIHABARA INC. www.akiba-tech.com 2.50 0.68 0.50 9.66 1.10 0.06 0.98 9.00 14.00 Page 3 of 17 SC162B VER2.1 4. Electrical characteristics a) DC characteristics a.1) DC CHARACTERISTICS (TA =25 °C, VDD = 2.7 to 4.5V) Characteristics Symbol Limit Unit Min. Typ. Max. Input High Voltage VIm 0.7VDD VDD V Input Low Voltage VlL -0.3 0.55 V Input High Current IIh -1.0 1.0 uA Input Low Current IlL -5.0 -15 -30 uA V oh Output High Voltage 0.75VDD V VOL Output Low Voltage 0.2VDD v Vlcd LCD Voltage V Operating Current Idd mA Note: VDD = 3V a.2) DC CHARACTERISTICS (TA = 25°C, VDD = 4.5 to 5.5V) Limit Characteristics Symbol Unit Min. Typ. Max. Input High Voltage VIm 2.2 VDD V Input Low Voltage VlL -0.3 0.6 V Input High Current IIh -2.0 2.0 uA Input Low Current IlL -20 -50 -100 uA Voh Output High Voltage 2.4 VDD V VOL Output Low Voltage 0.4 V Vlcd LCD Voltage 5 V Operating Current Idd 1.0 mA Note: VDD = 5V b) AC characteristics b.1) AC CHARACTERISTICS (TA = 25°C, VDD = 2.7 to 4.5V) Write Mode (Writing data from MPU to LCD module) Limit Characteristics Symbol Min. Typ. Max. E Cycle Time tc 1000 E Pulse Width tpw 450 E Rise/Fall Time tR,tF 25 Address Setup Time tsp-i 60 Address Hold Time tHD1 20 Data Setup Time tsP2 195 Data Hold Time tHD2 10 Read Mode (Reading data from LCD module to MPU) Limit Characteristics Symbol Min. Typ. E Cycle Time tc 1000 E Pulse Width tw 450 E Rise/Fall Time tR,tF Address Setup Time tsp-i 60 Address Hold Time tHD1 20 Data Output Delay Time tD Data hold time tHD2 5.0 - DigiTron Electronic Technology Co., Ltd Max. 25 360 - Test Condition VDD = 3.0V IOH = - 0.1mA Pins: DB7-0 |OL= 0.1mA Pins: DB7-0 Test Condition VDD = 5.0V IOH = - 0.1mA Pins: DB7-0 IOL= 0.1mA Pins: DB7-0 Unit Test Condition ns ns ns ns ns ns ns PinE PinE PinE Pins: RS, R/W, E Pins: RS, R/W, E Pins: DB7-0 Pins: DB7-0 Unit Test Condition ns ns ns ns ns ns ns PinE PinE PinE Pins: RS, R/W,E Pins: RS, R/W,E Pins: DB7-0 Pin DB7- 0 Page 4 of 17 SC162B VER2.1 b.2) AC CHARACTERISTICS (ta = 25°C, VDD = 4.5 to 5.5V) Write Mode (Writing Data from MPU to LCD module) Limit Characteristics Symbol Min. Typ. Max. E Cycle Time tc 400 150 E Pulse Width tpw 25 E Rise/Fall Time tR,tF 30 Address Setup Time tsp-i tHD1 10 Address Hold Time tsP2 40 Data Setup Time Data Hold Time tHD2 10 Read Mode (Reading Data from LCD module to MPU) Limit Characteristics Symbol Typ. Max. Min. E Cycle Time tc 400 E Pulse Width tw 150 E Rise/Fall Time tR,tF 25 tsp-i 30 Address Setup Time Address Hold Time tHD1 10 Data Output Delay Time tD 100 Data hold time tHD2 20 - Unit Test Condition ns ns ns ns ns ns ns PinE PinE PinE Pins: RS, R/W, E Pins: RS, R/W, E Pins: DB7-0 Pins: DB7-0 Unit Test Condition ns ns ns ns ns ns ns Pin E Pin E Pin E Pins: RS, R/W,E Pins: RS, R/W,E Pins: DB7-0 Pin DB7-0 c) EL backlight EL ,Cold Cathode Fluorescent Lamp and LED etc, are available as backlight for LCD Module upon your choice ,your request. 1.EL （1） Features Max 1.3mm thickness (Max 1.5mm for lead portion). Wide driving condition of 60-1000Hz and 150V AC Max .with inverter , step-up voltage from 1.5V battery is available. Emitted colors are blue-green and white . Operating characteristics （2） Electrical Characteristics Voltage vs. Brightness Voltage vs. Current Density Life Characteristics Current Density Power consumption 10 150 400HZ Brightness 100 50 50HZ 0 Current Density (mA/cm2 ) 1KHZ 06 04 400HZ 02 50HZ 0 50 100 150 Voltage (Vrms) 50 100 150 Voltage (Vrms) Ambient Condition: 50° C 90 % RH Initial Brightness ration (%) 08 Power consumption (mW/cm 2 ) 1KHZ 200 Constant Voltage /Frequency Drive Inverter Drive 100 100V/50HZ 50 100V/400HZ 0 100 200 100V/700HZ 300 400 500 Time (h) d) LED backlight (1)Features Low voltage driving (DC) is available without inverter. AKIHABARA INC. www.akiba-tech.com Page 5 of 17 SC162B VER2.1 Long life time 100000 hours (average). No noise occurrence. Various color of yellow-green and amber etc. Operating characteristics (2)Electrical Characteristics (Reference Data) Forward Current Derating Curve Wave Length vs. relative Light intensity L 100 L: A YELLOW-GREEN A: AMBER 100% forward current (If) 20% Relative Light Intensity(%) ( 50 -20 25 0 70℃ 520 540 560 580 600 620 640 660 680 700 Wave Length (mm) Note : The above spec . are only for reference TIMING CHARACTERISICS R S th1 tsu1 R/W th1 tw tf E tr tsu2 th2 Valid Data D B 0 ~ D B 7 tc Write Timing R S tsu th R/W tw th tf E tr tdh td D B 0 ~ D B 7 Valid Data tc Read Timing AKIHABARA INC. www.akiba-tech.com Page 6 of 17 SC162B VER2.1 5. Operating Principles a) Pin description Pin NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol VSS VDD V0 RS R/W E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 BLA(+) BLK(-) Level 0V 2.7V~5.5V H/L H/L H→L H/L H/L H/L H/L H/L H/L H/L H/L 4.2V 0V Function Ground Supply voltage for logic Variable voltage for LCD H: Instruction code L: Data H: Read signal L: Write signal enable signal Data bits In case of 4 bits instruction, data is transferred by twice using only 4 buses of D4 – D7 ,and D0 – D3 are not used , first operation is higher order 4 bits and second is lower 4 bits of 8 bits , but in case of 8 bits instruction , data is transferred by data by data bus of D0 – D7 Supply voltage for LED-Backlight Supply voltage for LED-Backlight b) Block Diagram AC RS R/W E D0-D3 D4-D7 IR I/O B U F F E R D E C O D E R DD RAM Cursor and blink CKT. VSS COM Driving Circuit LCD DR CG RAM CG RAM VDD VO Timing Control Circuit Driving Circuit BUSY FLAG P TO S registor a. Data Register (DR): Dris a register used for temporary Storage of the data read/write form/into DD RAM and CG RAM. b. Instruction Register (IR): is a register available for storing the instruction codes and address information of display data (DD) RAM and character generator (CG) RAM. c. BUSY FLAG (BF): When the Busy Flag is “1”,it shows that LCM is in internal operation and it can not accept the next instruction. d. Character Generator (CG) ROM: This ROM Generates character pattern from 8-bit character code and provides 192 character patterns. e. Character Generator (CG)RAM: This RAM allows the user to rewrite the character patterns freely according to the program. f. Address Counter (AC): This address counter is used to give the address information of DD RAM and CG RAM. AKIHABARA INC. www.akiba-tech.com Page 7 of 17 SC162B VER2.1 g. Display Data (DD) RAM: This display data RAM is used to store the display data expressed by 8-bit character code . The capacity is 80x 8bits and data for 80 characters can be storage. h. Cursor and Blink Control Circuit: This circuit generates the cursor and blink. RAM's address and the LCD's position shown bellows. Display Character address code: Display position 1 2 3 4 5 6 DDRAM Address 7 8 9 10 11 12 13 14 15 16 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F Relationship between Character Code (DDRAM) and character Pattern (CGRAM) Character code DD RAM Data B7 0 0 B6 0 0 B5 0 0 B4 0 0 B3 x x B2 0 0 B1 0 0 CG RAM Address B0 0 1 B5 0 0 B4 0 0 B3 Character Pattern CG RAM Data B2 B1 B0 0 0 0 B4 B3 B2 B1 B0 0 1 1 1 1 1 0 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 1 0 0 1 0 0 0 B7 x B6 x B5 x 1 0 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 1 0 0 0 1 0 0 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 1 0 0 1 0 0 1 x x x 1 0 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 1 0 0 1 1 1 0 1 1 1 0 0 0 0 0 1. ▆ It means that the bit0~2 of the character code correspond to the bit3~5 of the CG RAM address. 2. ▆ these areas are not used for display, but can be used for the general data RAM. 3. When all of the bit4-7 of the character code is 0, CG RAM character patterns are selected. 4. " 1 ": Selected," 0 ": No selected," X": Do not care (0 or 1). 5. for example (1), to set character code (b2 = b1 = b0 = 0, b3 = 0 or 1, b7-b4 = 0) is to display" T". That means character code (00)16, and (08)16 can display" T”character. 6. The bits 0-2 of the character code RAM is character pattern line position. The 8th line is the cursor position and display is formed by logical OR with the cursor AKIHABARA INC. www.akiba-tech.com Page 8 of 17 SC162B VER2.1 CGROM Character Code Table: Upper 4bit Lower 4bit LLLL LLLH LLHL L L H H LHLL LHLH LHHL LHHH HLLL HLLH HLHL HLHH HHLL HHLH H H H L HHHH LLLL CG RAM (1) LLLH (2) LLHL (3) LLHH (4) LHLL (5) LHLH (6) LHHL (7) LHHH (8) HLLL (1) HLLH (2) HLHL (3) HLHH (4) HHLL (5) HHLH (6) HHHL (7) HHHH (8) AKIHABARA INC. www.akiba-tech.com Page 9 of 17 SC162B VER2.1 c) Instruction description Control and display instructions will show in details as following: c.1) Clear Display RS R/W D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 0 0 0 0 0 1 It clears the whole display and sets display data RAM's address 0 in address counter. c.2) Return Home RS R/W D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 0 0 0 0 1 X X: Do not care (0 or 1) It sets display data RAM's address 0 in address counter and display returns to its original position. The cursor or blink goes to the left edge of the display (to the 1st line if 2 lines are displayed). The contents of the Display Data RAM do not change. c.3) Entry Mode Set During writing and reading data, it sets cursor move direction and shifts the display. RS R/W D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 0 0 0 1 I/D S I/ D = 1: Increment, I / D = 0: Decrement. S = 1: The display shift, S = 0: The display does not shift S= 1 I/D= 1 It shifts the display to the left S= 1 I/D=0 It shifts the display to the right c.4) Display On/Off Control RS R/W D7 D6 D5 D4 D3 D2 0 0 0 0 0 0 1 D D1 D0 C B D = 1: Display on, D = 0: Display off C = 1: Cursor on , C = 0: Cursor off B = 1: Blinks on, B= 0: Blinks off c.5) Cursor or Display Shift Without changing DD RAM's daters, it can move cursor and shift display RS R/W D7 D6 D5 D4 D3 D2 0 0 0 0 0 1 S/C R/L X D1 X D0 S/C R/L 0 0 0 1 1 0 1 1 c.6) Function Description Address Counter Shift cursor to the left AC = AC - 1 Shift cursor to the right AC = AC + 1 Shift display to the left. Cursor follows the display shift AC=AC Shift display to the right. Cursor follows the display shift AC=AC Set RS R/W D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 1 DL N F X X X: Do not care (0 or 1) DL: It sets interface data length. DL = 1: Datas are transferred with 8-bit lengths (DB7 - 0).DL = 0: Datas are transferred with 4-bit lengths (DB7 - 4). (It needs two times to transfer datas) N: It sets the number of the display line. N = 0: One-line display. N = 1: Two-line display. F: It sets the character font. F = 0: 5 x 7 dots character font. F = 1: 5 x 10 dots character font. N F No. of Display Lines Character Font Duty Factor 0 0 1 5X7 dots 1 /8 0 1 1 5x 10 dots 1 /11 1 X 2 5x7 dots 1 /16 AKIHABARA INC. www.akiba-tech.com Page 10 of 17 SC162B VER2.1 c.7) Set Character Generator RAM Address RS R/W D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 1 a a a a a a It sets character generator RAM address (aaaaaa)2 to the address counter. Character generator RAM data can read or write after this setting. c.8) Set Display Data RAM Address RS R/W D7 D6 D5 D4 D3 D2 D1 D0 0 0 1 a a a a a a a It sets display data RAM address (aaaaaaa)2 to the address counter. Display data RAM can read or write after this setting. In one-line display (N = 0), (aaaaaaa)2; (OO)16 - (4F)16 In two-line display (N = 1), (aaaaaaa)2: (00)16 - (27)16,gfor the first line, (aaaaaaa)2: (40)16 - (67)16,gfor the second line. c.9) Read Busy Flag and Address RS R/W D7 D6 D5 D4 D3 D2 D1 D0 0 1 BF a a a a a a a When (BF = 1) indicates that the system is busy now, it will not accept any instruction until no busy (BF = 0). At the same time, the address counter content’s (aaaaaaa)2; is read out. c.10) Write Data to Character Generator RAM or Display Data RAM RS R/W D7 D6 D5 D4 D3 D2 D1 D0 1 0 d d d d d d d d It writes data (dddddddd)2 to character generator RAM or display data RAM. c.11) Read Data from Character Generator RAM or Display Data RAM RS R/W D7 D6 D5 D4 D3 D2 D1 D0 1 1 d d d d d d d d It reads data (dddddddd)2 from character generator RAM or display data RAM. To get the correct data readout is shown below: (ⅰ)Set the address of the character generator RAM or display data RAM or shift the cursor instruction. (ii) Send the “Read “instruction. AKIHABARA INC. www.akiba-tech.com Page 11 of 17 SC162B Instruction table Instruction Code Instruction RS RW D7 D6 D5 VER2.1 Execution time (fosc=270KHz) D4 D3 D2 D1 D0 Description Write "20H" to DDRAM and 1.52ms set DDRAM address to "OOH" from AC Set DDRAM address to 1.52ms "OOH" from AC and return cursor to its original position if shifted. The contents of DDRAM are not changed. Clear Display 0 0 0 0 0 0 0 0 0 1 Return Home 0 0 0 0 0 0 0 0 1 - Entry 0 Mode Set Display 0 ON/ OFF Cursor or 0 Display Shift 0 0 0 0 0 0 1 I/D S 0 0 0 0 0 1 D C B 0 0 0 0 1 S/C R/L - - Function Set 0 0 0 0 1 DL N - Set CGRAM Address Set DDRAM Address Read Busy Flag and Address Counter 0 0 0 1 AC5 AC4 AC3 AC2 AC1 ACO Set CGRAM address in address counter. 38us 0 0 1 AC6 AC5 AC4 AC3 AC2 AC1 ACO Set DDRAM address in counter 38us 0 1 BF AC6 AC5 AC4 AC3 AC2 AC1 ACO Whether during internal operation or not can be known by reading BF. The contents of address counter can also be read. 38us Write Data 1 to RAM Read Data 1 from RAM 0 D7 D6 D5 D4 D3 D2 D1 DO Write data into internal RAM (DDRAM/CGRAM). 38us 1 D7 D6 D5 D4 D3 D2 D1 DO Read data from internal RAM (DDRAM/CGRAM). 38us F - AKIHABARA INC. www.akiba-tech.com Assign cursor moving direction and enable the shift of entire display Set display(D), cursor(C), and blinking of cursor(B) on/off control bit. Set cursor moving and display shift control bit, and the direction, without changing of DDRAM data. Set interface data length (DL: 8-bit/4-bit), numbers of display line (N: 2-line/1line) and, display font type (F:5x10dots/5x8dots) 38us 38us 38us 38us Page 12 of 17 SC162B VER2.1 6. Operating Methods a) Interface with MPU RS A0 7 A1-A7 MUX Z80 Interface to Z80 CPU /WR /RD C Q D R E LCM /IRQ RW 8 D0-D7 D0-D7 E Interface to MC6800 CPU E A0 RS LCM MC6800 RW /RD 8 D0-D7 A14 D0-D7 RS A15 Interface to MCS51 CPU E /RD /WR LCM MCS51 D0-D7 AKIHABARA INC. www.akiba-tech.com RW 8 D0-D7 Page 13 of 17 SC162B VER2.1 b) Power supply Dual Supply Voltage Types Single Supply Voltage Types 5V +3V VDD VDD VDD VDD-V0 VDD-VO LCM VDD VO LCM 10k~20k VSS Function set RS R/W D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 1 1 0 Display on / off control 0 0 0 0 0 0 1 0 X 0 0 0 0 0 0 0 Display on. Cursor appears. 1 1 0 1 0 0 1 0 1 0 _ 1 Increase address by one. It will shift the cursor to the right when writing to the DD RAM / CG RAM. Now the display has no shift. Write “W". The cursor is incremented by one and shifted to the right. 1 Write “E ". The cursor is incremented by one and shifted to the right. _ 1 1 0 Write data to CG RAM / DD RAM 5 1 1 W_ Write data to CG RAM / DD RAM 6 WE_ 1 0 0 1 0 7 1 0 •••• Write data to CG RAM / DD RAM 1 10 0 ••• 8 9 0 0 1 0 0 0 0 0 1 0 1 0 Entry mode set 0 0 0 0 0 1 1 1 Write data to CG RAM / DD RAM 1 0 0 0 1 0 Operation Power on reset. No display. Set to 8-bit operation and select 1-line display line and character font. X Entry mode set 4 VEE VDD-VO:LCD driving voltage c) Operating example 8-Bit operation and 8-digit 1-line display (using internal reset) No Instruction Display Power on . ( SPLC780A1 starts initializing ) 1 3 10k~20k VSS GND VDD-VO:LCD driving voltage 2 VO 0 0 0 0 AKIHABARA INC. www.akiba-tech.com WELCOME_ WELCOME_ ELCOME_ Write “E ". The cursor is incremented by one and shifted to the right. Set mode for display shift when writing Write" "(space). The cursor is incremented by one and shifted to the right. Page 14 of 17 SC162B Write data to CG RAM / DD RAM 11 1 0 0 1 0 12 16 17 18 19 0 0 1 0 1 LCOME C 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 0 0 X 0 0 1 0 0 1 1 X 0 0 0 0 1 1 1 1 0 0 0 0 1 0 1 X 0 0 1 0 0 0 0 X 0 COMPAMY Only shift the cursor's position to the left (M). OMPANY Write “N ". The display moves to the left. COMPANY Shift the display and the cursor's position to the right. COMPANY Shift the display and the cursor's position to the right. OMPANY Write " " (space). The cursor is incremented by one and shifted to the right. X X Write data to CG RAM / DD RAM 1 Only shift the cursor's position to the left (Y). 0 cursor or display shift 0 COMPAMY X cursor or display shift 0 Write " Y " . The cursor is incremented by one and shifted to the right. X Write data to CG RAM / DD RAM 1 COMPAMY 1 cursor or display shift 0 0 ••••• •• return home 0 0 0 0 0 0 0 0 1 WELCOME 0 4-Bit operation and 8-digit 1-line display (using internal reset) No Instruction Display . Power on . ( SPLC780A1 starts initializing ) 1 Function set RS R/W D7 D6 D5 D4 2 0 0 0 0 1 0 Function set 3 0 0 4 0 0 0 1 0 0 0 X Display on / off control 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 Operation Power on reset. No display. Set to 4-bit operation Set to 4-bit operation and select 1-line display line and character font. _ Display on. Cursor appears. _ Increase address by one. It will shift the cursor to the right when writing to the DD RAM / CG RAM. Now the display has no shift. W_ Write “W “. The cursor is incremented by one and shifted to the right. 0 0 0 1 1 0 0 Write data to CG RAM / DD RAM 6 Both the display and the cursor return to the original position (address 0). X Entry mode set 5 Write “C ". The cursor is incremented by one and shifted to the right. •• Cursor Or Display Shift 20 21 0 Write data to CG RAM / DD RAM 1 15 0 ••••• 13 14 0 VER2.1 1 0 0 1 0 1 1 0 0 1 1 1 AKIHABARA INC. www.akiba-tech.com Page 15 of 17 SC162B VER2.1 Reset function At power on, it starts the internal auto-reset circuit and executes the initial instructions . There are the initial procedures shown as bellows: Power on 8bits interface Waite time > 15ms after VDD>4.5V RS R/W D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 1 1 X X X X BF cannot be checked before this instruction Function set (interface is 8 bits length). Wait time > 4.1ms RS R/W D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 1 1 X X X X BF cannot be checked before this instruction Function set (interface is 8 bits length). Wait time > 100us RS R/W D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 1 1 X X X X RS R/W D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 1 1 N F X X 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 I/D S Initialization end AKIHABARA INC. www.akiba-tech.com BF cannot be checked before this instruction Function set (interface is 8 bits length). BF cannot be checked after the following Instructions Function set (interface is 8 bits length. specify The number of display lines and character Font .) The number of display lines and character cannot be changed afterwards. Display off Display clear Entry mode set Page 16 of 17 SC162B Power on VER2.1 4bits interface Waite time > 15ms after VDD>4.5V RS 0 R/W D7 0 0 D6 0 D5 1 D4 1 BF cannot be checked before this instruction Function set (interface is 8 bits length). D6 0 D5 1 D4 1 BF cannot be checked before this instruction Function set (interface is 8 bits length). Wait time > 4.1ms RS 0 R/W D7 0 0 Wait time > 100us RS 0 R/W D7 0 0 D6 0 D5 1 D4 1 BF cannot be checked before this instruction Function set (interface is 8 bits length). RS 0 0 0 0 0 0 0 0 0 R/W D7 0 0 0 0 0 N 0 0 0 1 0 0 0 0 0 0 0 0 D6 0 0 F 0 0 0 0 0 1 D5 D4 1 0 1 0 X X 0 0 0 0 0 0 0 1 0 0 I/D S BF cannot be checked after the following Instructions Function set (set interface to be 4 bits length) Interface 8 bits length Function set (interface is 8 bits length. specify The number of display lines and character Font.) The number of display lines and character cannot be changed afterwards. Display off Display clear Entry mode set Initialization end AKIHABARA INC. www.akiba-tech.com Page 17 of 17