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| www..com LM12864LFW LCD Module User Manual Prepared by: K.C. Checked by: Approved by: Date: 2008-07-01 Date: Date: Rev. 0.1 Descriptions Preliminary New release Release Date 2008-07-01 URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM12864LFW-Manual-Rev0.1.DOC Page: 1 of 10 TOPWAY Table of Content 1. 1.1 1.2 1.3 1.4 LCD Module User Manual LM12864LFW Basic Specifications................................................................................................................ 3 Display Specifications ............................................................................................................................................ 3 Mechanical Specifications...................................................................................................................................... 3 Block Diagram........................................................................................................................................................ 3 Terminal Functions................................................................................................................................................. 4 2. 3. 3.1 3.2 3.3 Absolute Maximum Ratings.................................................................................................... 5 Electrical Characteristics........................................................................................................ 5 DC Characteristics ................................................................................................................................................. 5 LED Backlight Circuit Characteristics..................................................................................................................... 5 AC Characteristics ................................................................................................................................................. 6 www..com 4. Function Specifications .......................................................................................................... 7 Basic Setting .......................................................................................................................................................... 7 Adjusting the LCD display contrast ........................................................................................................................ 7 Resetting the LCD module ..................................................................................................................................... 7 Display Memory Map ............................................................................................................................................. 8 Internal Registers ................................................................................................................................................... 8 Display Control Instructions ................................................................................................................................... 9 4.1 4.3 4.4 4.5 4.6 4.2 5. Design and Handling Precaution ......................................................................................... 10 URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM12864LFW-Manual-Rev0.1.DOC Page: 2 of 10 TOPWAY 1. Basic Specifications 1.1 LCD Module User Manual LM12864LFW Display Specifications 1) LCD Display Mode : STN, Negative, Transmissive 2) Display Color : Display Data = "1" : Light Gray (*1) : Display Data = "0" : Deep Blue (*2) 3) Viewing Angle :6H 4) Driving Method : 1/64 duty, 1/ 9bias 5) Back Light : White LED backlight Note: *1. Color tone may slightly change by Temperature and Driving Condition. *2. The Color is defined as the inactive / background color www..com 1.2 Mechanical Specifications 1) Outline Dimension : 93.0 x 70.0 x 13.8MAX (see attached Outline Drawing for details) Block Diagram 1.3 BLA, BLK LED Backlight Circuit S6B0107 or equivalent LCD Panel 128 x 64 pixels VDD, VSS VOUT, V0 DB0 - DB7 RS, R/W, E, /RST CS1 CS2 Power Booster Circuit S6B0108 or equivalent S6B0108 or equivalent URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM12864LFW-Manual-Rev0.1.DOC Page: 3 of 10 TOPWAY LCD Module User Manual LM12864LFW 1.4 Terminal Functions Pin Pin I/O Descriptions No. Name 1 VSS Power Negative Power Supply, Ground (0V) 2 VDD Power Positive Power Supply 3 V0 Power LCD Contrast reference 4 RS Input RS = H; DB0 - DB7 = Display RAM data RS = L; DB0 - DB7 = Instruction data 5 R/W Input In read mode R/W = H; 6 E Input Data read form the LCD module, data appears at DB0 - DB7 and can be read by the host www..com while, E = H and the device is being selected In write mode R/W = L; Data write to the LCD module, data appears at DB0 - DB7 will be written into the LCD module at E = H L and device is being selected 7 DB0 I/O Data bus; Three state I/O terminal for display data or instruction data : : : 14 DB7 I/O 15 CS1 Input Chip selection, When CS1=1 (*1) enable access to the Left Side (64 column) of the LCD module 16 CS2 Input Chip selection When CS2=1 (*1) enable access to the Right Side (64 column) of the LCD module 17 /RST Input Reset signal /RST = L, Display off display start line register becomes 0 no command or instruction data could be accepted /RST = H, Normal running 18 VOUT Output Power Booster output for V0 19 BLA Power Positive Power for LED backlight 20 BLK Power Negative Power for LED backlight Note: *1. Display or instruction data could write into the LCD module's driver/controllers individually or at the same time. Only read display or instruction data form one of the driver/controller in the LCD module at a time, otherwise unexpected data collision may occur. URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM12864LFW-Manual-Rev0.1.DOC Page: 4 of 10 TOPWAY LCD Module User Manual LM12864LFW 2. Absolute Maximum Ratings Items Symbol Min. Max. Unit Condition Supply Voltage VDD 0 7.0 V VSS = 0V Operating Temperature TOP -20 70 No Condensation C Storage Temperature TST -30 80 No Condensation C Cautions: Any Stresses exceeding the Absolute Maximum Ratings may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. www..com 3. Electrical Characteristics 3.1 DC Characteristics Symbol VDD VIH VIL IDD MIN. 4.8 3.5 0 TYP. 5.0 6.5 MAX. 5.2 VDD 0.4 15 Unit V V V mA VSS=0V, VDD =5V, TOP =25C Applicable Pin VDD RS, R/W, E, CS1, CS2, DB0-DB7 VDD, VSS Items Operating Voltage Input High Voltage Input Low Voltage Operating Current 3.2 LED Backlight Circuit Characteristics Symbol VfBLA IfBLA MIN. TYP. 4.9 MAX. 120 VBLK=0V, IfBLA=80mA, TOP=25C Unit Applicable Pin V BLA, BLK mA BLA, BLK Items Forward Voltage Forward Current BLA BLK URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM12864LFW-Manual-Rev0.1.DOC Page: 5 of 10 TOPWAY 3.3 AC Characteristics LCD Module User Manual LM12864LFW Item E cycle time E high level width E low level width E rise time E fall time Address set-up time Address hold time Data set-up time Data delay time www..com Data hold time (write) Data hold time (read) Symbol tc twh twl tr tf tasu tah tdsu td tdhw tdhr MIN. 1500 700 700 210 15 300 15 30 TYP. - VSS=0V, VDD =5V, TOP =25C MAX. Unit ns ns ns 18 ns 18 ns ns ns ns 480 ns ns ns Host Write Timing Diagram Host Read Timing Diagram URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM12864LFW-Manual-Rev0.1.DOC Page: 6 of 10 TOPWAY LCD Module User Manual LM12864LFW 4. Function Specifications 4.1 Basic Setting To drive the LCD module correctly and provide normally display, please use the following setting Display start line (Z address)= 0 LCD Display = on Note: These setting/commands should issue to both controllers while start up. See the Display Control Instructions section for details. www..com LCD module VDD Power Supply 4.2 Adjusting the LCD display contrast A Variable-Resistor must be connected to the LCD module for providing a reference to V0. Adjusting the VR will result the change of LCD display contrast. The recommended value of VR is 25k to 50k VR V0 VOUT VSS 4.3 Resetting the LCD module The LCD module should be initialized by setting /RST terminal at low level when turning the power on. When /RST pull low, the LCD module will: - Display off - Display start line register becomes 0. (Z-address=0) While /RST is low, no instruction can be accepted except status read. Therefore, execute other instructions after making sure that DB4=0 (clear /RST) and DB7=0 (ready) by status read instruction. The conditions of power supply at initial power up are as follow: Item Reset time Rise time Symbol trs tr MIN. 2.0 TYP. MAX. 150 Unit us ns URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM12864LFW-Manual-Rev0.1.DOC Page: 7 of 10 TOPWAY 4.4 Display Memory Map Page (X) data address 0 1 2 3 www..com D0 : D7 D0 : D7 D0 : D7 D0 : D7 D0 : D7 D0 : D7 D0 : D7 D0 : D7 LCD Module User Manual LM12864LFW LCD Display (front view) 4 5 6 7 128x64 pixels Column(Y) Address 00h 3Fh 00h 3Fh Chip Select CS1=1, CS2=0 CS1=0, CS2=1 Note: 1) Display star line (Z address) = 0 2) The Display Data store separately in two drivers. 3) The Display Data for the left section could be accessed by CS1=1. The Display Data for the right section could be accessed by CS2=1. 4.5 Internal Registers There are three registers in each section of LCD module. Each of them could be controlled independently. Page (X) Address Register X address register designates pages of the internal display data RAM. Count function is not available. The address should set by instruction. Column (Y) Address Counter Y address counter designates address of the internal display data RAM. It could be set by instruction and is increased by 1 automatically by read or write display data operations. Display Start Line (Z) Register Z address register indicates of display data RAM to LCD top line. It may be used for scrolling the display pattern on the LCD. URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM12864LFW-Manual-Rev0.1.DOC Page: 8 of 10 TOPWAY 4.6 Display Control Instructions Code LCD Module User Manual LM12864LFW RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Instructions Function Note Display on/off Set Column (Y) Address Set Page (X) Address Set Display Start www..com address) Line (Z Status Read 0 0 0 0 Controls the display on or off. Internal status and 0 0 0 1 1 1 1 1 1/0 display data in RAM is not affected 0=off, 1=on Set the Column address into the Y address Y address (0-63) 001 counter 010111 011 Busy X address Set the Page address into the X address register (0-7) *2 *2 *2 *2 *1 *2 *1 Z address (0-63) 0 1 0 0000 Write Display Data Read Display Data 1 1 0 1 Write data Read data Indicates the display data RAM displayed at the top of the screen Read status Busy=L, Driver ready; Busy=H, Driver busy on/off=L, Display is on; on/off=H, Display is off Reset=L, Normal Running; Reset=H, reset Write display data into display data RAM, After writing instruction, Y address counter increased by 1 automatically Read display data form the display data RAM Note: *1. Only one section (driver) could be read at the same time. i.e. only the following setting is valid for the operation: CS1=1, CS2=0 is valid CS1=0, CS2=1 is valid *2. Instruction could be write into both drivers at the same time. *3. For the details of the Display Control Instructions, please refer to Samsung S6B0108 handbook. on/off Reset URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM12864LFW-Manual-Rev0.1.DOC Page: 9 of 10 TOPWAY LCD Module User Manual LM12864LFW 5. Design and Handling Precaution 1. 2. 3. 4. 5. 6. www..com 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. The LCD panel is made by glass. Any mechanical shock (eg. dropping form high place) will damage the LCD module. Do not add excessive force on the surface of the display, which may cause the Display color change abnormally. The polarizer on the LCD is easily get scratched. If possible, do not remove the LCD protective film until the last step of installation. Never attempt to disassemble or rework the LCD module. Only Clean the LCD with Isopropyl Alcohol or Ethyl Alcohol. Other solvents (eg. water) may damage the LCD. When mounting the LCD module, make sure that it is free form twisting, warping and distortion. Ensure to provide enough space (with cushion) between case and LCD panel to prevent external force adding on it, or it may cause damage to the LCD or degrade the display result. Only hold the LCD module by its side. Never hold LCD module by add force on the heat seal or TAB. Never add force to component of the LCD module. It may cause invisible damage or degrade of the reliability. LCD module could be easily damaged by static electricity. Be careful to maintain an optimum anti-static work environment to protect the LCD module. When peeling off the protective film from LCD, static charge may cause abnormal display pattern. It is normal and will resume to normal in a short while. Take care and prevent get hurt by the LCD panel sharp edge. Never operate the LCD module exceed the absolute maximum ratings. Keep the signal line as short as possible to prevent noisy signal applying to LCD module. Never apply signal to the LCD module without power supply. IC chip (eg. TAB or COG) is sensitive to the light. Strong lighting environment could possibly cause malfunction. Light sealing structure casing is recommend. LCD module reliability may be reduced by temperature shock. When storing the LCD module, avoid exposure to the direct sunlight, high humidity, high temperature or low temperature. They may damage or degrade the LCD module URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM12864LFW-Manual-Rev0.1.DOC Page: 10 of 10 |
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