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| MTG-12864A GENERAL SPECIFICATION Item Number of Character Module Size Viewing Area Dot Size/Dot Pitch Backlight Options Built-in Controller 128x64 93.0(W)x70.0(H)x9.7/14.5(D)mm Max 71.7(W)x39.0(H)mm 0.50(W)x0.50(H)mm/0.52(W)x0.52(H)mm Without/EL/LED Gray STN/Yellow STN/Normal/Extended Temperature/Bottom/Top Viewing KS0108 or compatible INTERFACE PIN ASSIGNMENT Content Pin No. Pin Out 1 2 3 4 V SS V DD V ADJ D/I GND Function Description Logic supply voltage P o w e r s u p p l y f o r L C D p a n e l , t u n i n g f o r m V DD- V EE Data/Instruciton D/I=high: Indicates that data of DB0~DB7 is display data. Read/Write R/W=high: Data of DB0~DB7 can be read by CPU. R/W=low: Data of DB0~DB7 can be written into LCD driver IC at the falling edge of E when CS1 and CS2 is high Enable: When write (R/W=low): Data of DB0~DB7 is latched at the fall of E. When read(R/W=high): Data is read while E is at high level. ELECTRICAL CHARACTERISTICS Item Power Supply for Logic Input Voltage LCM Recommend LCD Module Driving Voltage Power Supply Current for LCM Power Supply for LED backlight 5 R/W Symbol V DD- V SS V IL V IH Condition L level H level T a = 0 C Min. 4.5 V SS 0 . 8 V DD 8.3 8.4 7.7 - Typ 5.0 0 . 2 V DD V DD 9.0 8.7 7.92 1.5 390 0.6 Max. Unit note 5.5 9.3 9.0 8.2 1.8 585 1.0 mA Volt Volt Volt Volt - 6 E 7~14 15 16 DB0~DB7 Data Bus: 3-state I/O common terminal. CS1 CS2 Chip select for the left half of the display. Active high Chip select for the right half of the display. Active high Setting the RES signal to Low level can initialize the following registers. 1. ON/OFF register 0 set (Display off) 2. Display start line register 0 set(display starts from line 0). After releasing reset, this condition can be changed only by software. Power supply for LCD driving circuit.Please refer page 11 for DC to DC connecting V DD- V ADJ T a = 2 5 C T a = 5 0 C 17 RES I DD( L E D B/L OFF) I EE( L E D B/L ON) I EE V LED V DD= 5 . 0 V V DD- V ADJ= 8 . 7 V FLM=64Hz VLEDA-VLEDK=4.2V 18 19 VEE BKLA BKLK T a = 2 5 C - 4.2 - V DC 20 Power supply for backlight. (4.2V/390~585mA DC for LED backlight, 110V/400Hz AC for EL) BLOCK DIAGRAM POWER SUPPLY MECHANICAL |
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