User’s Guide ATM2002D Liquid Crystal Display Module CONTENTS Mechanical Diagram… … … … … … … … … … … … … … … … .… … … 2 Absolute Maximum Ratings… … … … … … … … … … … … … … … … 3 Description of Terminals… … … … … … … … … … … … … … … … .... 3 Optical Characteristics… … … … … … … … … … … … … … … … … … Electrical Characteristics DC Characteristics… … … … … … … … .… … … … … … … AC Characteristics … … … … … … … … … .… … … … … .... 4 4 4 5 Write Cycle … … … … … … … … … … … … … .… … … … … … … … ..… .. 5 Timing Characteristics… … … … … … … … … … ....… … … 6 Block Diagram… … … … … … … … … ..… … … … … … … .. 7 Display Commands… … … … … … … … .… … … … … … … … … … … … 8 Reliability and Lift Time… … … … … … … … .… … … … … … … … … … . 9 Standard Character Pattern… … … … … … … … .… … … … … … … … . 10 １ Mechanical Diagram ０．１ １ ２ Absolute Maximum Ratings Item Symbol Min Max Unit Power Voltage VDD -VSS 0 7.0 V Input Voltage Vin VSS VDD Operating Temperature Range T OP 0 +50 Storage Temperature Range T ST -20 +60 *wide Temperature range is available (operating/storage temperature as wide as -20 +70/-30 +80 ) Description Of Terminals Pin No. 1 2 3 Pin Name VSS VDD VO 4 RS INPUT MPU 5 R/W Input MPU 6 E Input MPU DB0-DB3 Input MPU DB4-DB7 Input MPU 7 / 10 11 / 14 15 / 16 LED + LED - Input/ Output Input External Connection Power Supply LED BACKLIGHT POWER SUPPLY Function VSS:GND VDD: +5V VLCD adjustment Register select signal “0”:Instruction register (when writing) Busy flag & address counter (When reading) “1”:Data register (when writing & reading) Read/write select signal “0” for writing , “1” for reading Operation (data read/write) enable signal Low-order lines of data bus with 3-state, bi-directional function for use in data transaction with the MPU. These lines are not used when interfacing with a 4-bit microprocessor. High-order lines of data bus with 3-state, bi-directional function for use in data transactions with the MPU. DB7 may also be used to check the busy flag. LED + VOLTAGE TYPE:4.2V MAX : 4.5V LED - : GND ３ Optical Characteristics for TN Type Display Module (Ta=25 , VDD=5.0V 0.25V) Item Symbol Condition Min. Typ. Viewing angle Cr 4 -25 -30 Contrast ratio Cr 2 Response time(rise) Tr 120 Response time(fall) Tr 120 Max. Unit deg 30 for STN Type Display Module (Ta=25 , VDD=5.0V 0.25V) Item Symbol Condition Min. Typ. Viewing angle Cr 2 -60 -40 Contrast ratio Cr 6 Response time(rise) Tr 150 Response time(fall) Tr 150 150 150 ms ms Max. 35 40 Unit deg 250 250 ms ms Electrical Characteristics DC Characteristics Parameter Supply voltage for LCD Input voltage Supply current Input leakage current “H” level input voltage “L” level input voltage “H” level output voltage “L” level output voltage Backlight supply power Symbol VDD VO VDD IDD ILKG VIH VIL VOH VOL VF Conditions TA=25 Min. Type 4.6 4.7 VDD=5.0V;TA=25 Twice initial value or less LOH= -0.25MA LOL=1.6MA 1.5 2.2 0 Max. 5.5 2.5 1.0 VDD 0.6 Unit V V mA A V V 0.4 4.5 V V V 2.4 4.2 ４ AC Characteristics Read Cycle (V DD=5.0V+10%,V SS=OV, Ta=25 ) Parameter Symbol Test pin Enable cycle time tc E Enable pulse width tw E Enable rise/fall time tr, tf E RS,R/W setup time tsu RS; R/W RS.R/W address hold time th RS; R/W Read data output delay tD DB0-DB7 Read data hold time tDH DB0-DB7 Min. 500 300 Type Max. Unit 25 100 10 60 20 ns 190 Write Cycle Parameter Enable cycle time Enable pulse width Enable rise/fall time RS,R/W setup time RS,R/W address hold time Data setup time Data hold time Symbol tc tw tr,tf tsu1 th1 t su2 t h2 Test pin E E E RS; R/W RS; R/W DB0-DB7 DB0-DB7 Min. 500 300 Type Max. Unit 25 100 10 60 10 ns ５ Timing Characteristics ６ Block Diagram LCD PANEL 8 OR 16 LCD CONTROLLER AND 40 ＤＲＩＶＥＲ LCD DRIVER +5V VDD VDD-V0 VR LCM V0 VSS GND VDD-Vo: LCD DRIVING VOLTAGE VR: 10K-20K ７ Display command Parameter Clear Display Cursor home Entry Mode Set Display on/off RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1/D * S 0 Cursor / Display Shift 0 System Set 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 Set CG RAM Address 0 0 0 Set DD RAM Address 0 0 1 Read Busy Flag/Address Counter 0 1 BF Write Data Read Data 1 1 0 1 Write data Read data DL 1 S/C N D C R/L B * F * * * 1 CG RAM address corresponds to cursor address DD RAM address Address counter used for both DD&CG RAM address Note Executing time fosc=250kh z 1.64ms 1.64ms DB1=1:Increment DB1=0:Decrement DB0=1:The display is shifted DB0=0:The display is not shifted DB2=1:Display on DB2=0: Display off DB1=1:Cursor on DB1=0: Cursor off DB0=1:Brinking on DB0=0: Brinking off DB3=1:Shifts display one character DB2=1:Right shift DB2=0:Left shift DB4=1:8 bits DB4=0:4 bits DB3=1:2 lines display (1/16 duty) DB3=0:1 line display DB2=1:5 10 dots , 1/11 duty DB2=1:5 7 dots , 1/8 duty The address length that can be set is 64 address The address length that can be set is 80 address DB7=1:Busy (instruction not accepted) DB7=0:Ready(for instruction) 40 s 40 s 40 s 40 s 40 s 40 s 0 s 46 46 s s DD RAM Address: Address for line 1 Address for line 2 1 00 40 2 01 41 3 02 42 4 03 43 5 04 44 6 05 45 7 06 46 8 07 47 9 08 48 10 09 49 11 12 13 14 15 16 A B C D E F 4A 4B 4C 4D 4E 4F ８ Reliability and Life Time 1.Reliability Test Storage Condition Content Operation at high temperature and humidity High temperature storage Low temperature storage 40 ,90% RH,240hrs Evaluations and Assessment* Current Oozing Contrast consumption Twice initial none More than 80% of value or less initial value 60 , 240hrs -20 , 240hrs Twice initial value or less Twice initial value or less none More than 80% of initial value More than 80% of initial value Other appearances No abnormality No abnormality No abnormality *Evaluations and assessment to be made two hours after returning to room temperature (25 5 ). *The LCDs subjected to the test must not have dew condensation. 2. Liquid crystal panel service life 50,000 hours minimum at 25 10 ,45 20%RH. ９ Standard Character Pattern Note: The user can specify any pattern for character-generator RAM. １０