Dot-Matrix Liquid Crystal Display Controller/Driver

HD66712U (Dot-Matrix Liquid Crystal Display Controller/Driver) Description The HD66712 dot-matrix liquid crystal display controller and driver LSI displays alphanumerics, numbers, and symbols. It can be configured to drive a dot-matrix liquid crystal display under the control of a serial or a 4- or 8-bit microprocessor. Since all the functions such as display RAM, character generator, and liquid crystal driver, required for driving a dot-matrix liquid crystal display are internally provided on one chip, a minimum system can be interfaced with this controller/driver. A single HD66712 is capable of displaying a single 24-character line, two 24-character lines, or four 12character lines. The HD66712 software is upwardly compatible with the LCDII (HD44780) which allows the user to easily replace an LCD-II with an HD66712. In addition, the HD66712 is equipped with functions such as segment displays for icon marks, a 4-line display mode, and a horizontal smooth scroll, and thus supports various display forms. This achieves various display forms. The HD66712 character generator ROM is extended to generate 240 5 × 8 dot characters. The low-voltage operation (2.7V) of the HD66712, combined with a low-power mode, is suitable for any portable battery-driven product requiring low power consumption. Features • 5 × 8 dot matrix possible • Clock-synchronized serial interface capability; can interface with 4- or 8-bit MPU • Low-power operation support:  2.7 to 5.5V (low voltage)  Wide liquid-crystal voltage range: 2.7 to 11.0V max. • Booster for liquid crystal voltage  Two/three times (13V max.) • High-speed MPU bus interface (2MHz at 5-V operation) 364 HD66712U • • • • • • • • • • • Extension driver interface Character display and independent 60-icon mark display possible Horizontal smooth scroll by 6-dot font width display possible 80 × 8-bit display RAM (80 characters max.) 9,600-bit character generator ROM  240 characters (5 × 8 dot) 64 × 8-bit character generator RAM  8 characters (5 × 8 dot) 16 × 8-bit segment icon mark  96-segment icon mark 34-common × 60-segment liquid crystal display driver Programmable duty cycle (See List 1) Software upwardly compatible with HD44780 Wide range of instruction functions:  Functions compatible with LCD-II: Display clear, cursor home, display on/off, cursor on/off, display character blink, cursor shift, display shift  Additional functions: Icon mark control, 4-line display, horizontal smooth scroll, 6-dot character width control, white-black inverting blinking cursor Automatic reset circuit that initializes the controller/driver after power on (standard version only) Internal oscillator with an external resistor Low power consumption TCP-128 pin, bare-chip • • • • List 1 Programmable Duty Cycles Number of Lines 1 2 3 5-Dot Font Width Duty Ratio 1/17 1/33 1/33 Displayed Characters One 24-character line Two 24-character lines Four 12-character lines Icons 60 60 60 6-Dot Font Width Displayed Characters One 20-character lines Two 20-character lines Four 10-character lines Icons 60 60 60 365 HD66712U Ordering Information Type No. HD66712SA00FS HD66712SA01FS HD66712SA02FS HCD66712UA02 HD66712UA02TA0 HD66712UA03TA0 HCD66712UA03 HCD66712UA03BP Package QFP1420-128 (FP-128) QFP1420-128 (FP-128) QFP1420-128 (FP-128) Chip Standard TCP-128 Standard TCP-128 Chip Chip with bump Japanese + European font CGROM Japanese standard Communication European font 366 HD66712U LCD-II Family Comparison Item Power supply voltage HD66702 5V ±10 % (standard) 2.7V to 5.5V (low voltage) 3.0V to 8.3V 20 characters × 2 lines HD66710 2.7V to 5.5V HD66712S 2.7V to 5.5V HD66712U ← Liquid crystal drive voltage Maximum display digits per chip 3.0V to 13.0V 16 characters × 2 lines/ 8 characters × 4 lines 40 segments 9,600 bits (240 5 × 8 dot characters) 3.0V to 13.0V 24 characters × 2 lines/ 12 characters × 4 lines 60 segments 1/17 and 1/33 9,600 bits (240 5 × 8 dot characters) 2.7V to 11.0V ← Segment display Display duty cycle CGROM None 7,200 bits (160 5 × 7 dot characters and 32 5 × 10 dot characters) 64 bytes 80 bytes None 100 16 B External (adjustable) ← ← ← 1/8, 1/11, and 1/16 1/17 and 1/33 CGRAM DDRAM SEGRAM Segment signals Common signals Liquid crystal drive waveform Bleeder resistor for LCD power supply Clock source Rf oscillation frequency (frame frequency) 64 bytes 80 bytes 8 bytes 40 33 B External (adjustable) 64 bytes 80 bytes 16 bytes 60 34 B External (adjustable) ← ← ← ← ← ← ← ← ← External resistor or External resistor or External resistor or external clock external clock external clock 320 kHz ±30% (70 to 130 Hz for 1/8 and 1/16 duty cycle; 51 to 95 Hz for 1/11 duty cycle) 68 kΩ: 5-V operation; 56 kΩ: (3-V operation) 270 kHz ±30% (56 to 103 Hz for 1/17 duty cycle; 57 to 106 Hz for 1/33 duty cycle) 91 kΩ: 5-V operation; 75 kΩ: 3-V operation 270 kHz ±30% (56 to 103 Hz for 1/17 duty cycle; 57 to 106 Hz for 1/33 duty cycle) 91 kΩ: 5-V operation; 75 kΩ: 3-V operation Rf resistance 130 kΩ: 5-V operation 110 kΩ: 3-V operation 367 HD66712U Item Liquid crystal voltage booster circuit Extension driver control signal Reset function Instructions Number of displayed lines Low power mode Horizontal scroll Bus interface CPU bus timing HD66702 None Independent control signal HD66710 2-3 times step-up circuit HD66712S 2-3 times step-up circuit HD66712U ← ← Used in common Independent control with a driver output signal pin Power on automatic Power on automatic Power on automatic reset reset reset or Reset input Fully compatible with the LCD-II 1 or 2 None Character unit 4 bits/8 bits 1 MHz Uppercompatible with the LCD-II 1, 2, or 4 Available Dot unit 4 bits/8 bits 2 MHz: 5-V operation; 1 MHz: 3-V operation 150 µA (typ) Upper compatible with the LCD-II 1, 2, or 4 Available Dot unit Serial; 4 bits/8 bits 2 MHz: 5-V operation; 1 MHz: 3-V operation 150 µA (typ) 100 µA (LP mode, 1/33 duty) 75 µA (LP mode, 1/17 duty) QFP-1420-128 TCP-128 128-pin bare chip ← ← ← ← ← ← ← Current consumption 150 µA (typ) 120 µA (typ) 85 µA (LP mode, 1/33 duty) 60 µA (LP mode, 1/17 duty) TCP-128 128-pin bare chip Package LQFP-2020–144 144-pin bare chip QFP-1420-100 TQFP-1414-100 100-pin bare chip 368 HD66712U HD66712 Block Diagram EXT OSC1 OSC2 CPG Reset circuit ACL RESET* Timing generator CL1 CL2 M 7 Instruction register (I R) Instruction decoder COM0– COM33 34-bit shift register Common signal driver 8 Address counter 7 RS/CS* R/SCLK RW/SID System interface • Serial • 4 bits • 8 bits Display data RAM (DDRAM) 80 × 8 bits D 7 8 SEG1– SEG60 60-bit shift register 60-bit latch circuit DB4–DB7 Input/ output buffer 8 Data register (DR) 8 Busy flag 3 7 8 Segment signal driver DB3–DB0 8 8 DB0–SOD Segment RAM (SGRAM) 16 bytes Character generator RAM (CGRAM) 64 bytes Character generator ROM (CGROM) 9,600 bytes Cursor and bling controller LCD drive voltage selector Vci C1 C2 V5OUT2 V5OUT3 Booster 5 5/6 Parallel/serial converter and smooth scroll circuit VCC GND V1 V2 V3 V4 V5 369 HD66712U HCD66712 Dummy 3 2 1 128 101 Dummy 100 Y Type code HD66712 Chip size (X × Y) Coordinate Origin Pad size (X × Y) Bump size (X × Y) : : : : : 4.95 × 5.27 mm Pad Center Chip Center 80 × 80 µm 70 × 70 µm 36 Dummy 37 X 66 67 Dummy 370 HD66712U HCD66712U Pad Coordinate Pad No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Function SEG44 SEG45 SEG46 SEG47 SEG48 SEG49 SEG50 SEG51 SEG52 SEG53 SEG54 SEG55 SEG56 SEG57 SEG58 SEG59 SEG60 COM9 COM10 COM11 COM12 COM13 COM14 COM15 COM16 COM25 COM26 COM27 COM28 COM29 COM30 COM31 COM32 COM33 Vcc OSC2 OSC1 CL1 CL2 D M RESET* IM EXT Coordinate X Y –1960 2437 –2120 2437 –2277 2293 –2277 2149 –2277 1872 –2277 1728 –2277 1600 –2277 1472 –2277 1344 –2277 1216 –2277 1088 –2277 960 –2277 832 –2277 704 –2277 576 –2277 448 –2277 320 –2277 192 –2277 64 –2277 –64 –2277 –192 –2277 –320 –2277 –448 –2277 –576 –2277 –704 –2277 –832 –2277 –960 –2277 –1088 –2277 –1216 –2277 –1344 –2277 –1472 –2277 –1600 –2277 –1728 –2277 –1856 –2286 –2158 –2286 –2302 –2120 –2446 –1968 –2446 –1832 –2446 –1704 –2446 –1576 –2446 –1448 –2446 –1320 –2446 –1192 –2446 Pad No. 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 Function TEST GND RS/CS RW/SiD E/SCLK DB0/SOD DB1 DB2 DB3 DB4 DB5 DB6 DB7 Vci C2 C1 GND V5OUT2 V5OUT3 V5 V4 V3 V2 V1 COM24 COM23 COM22 COM21 COM20 COM19 COM18 COM17 COM8 COM7 COM6 COM5 COM4 COM3 COM2 COM1 COM0 SEG1 SEG2 SEG3 Coordinate X Y –1064 –2446 –936 –2446 –792 –2446 –656 –2446 –520 –2446 –384 –2446 –248 –2446 –112 –2446 24 –2446 160 –2446 296 –2446 432 –2446 568 –2446 704 –2446 850 –2446 1001 –2426 1141 –2402 1376 –2446 1640 –2446 1800 –2446 1960 –2446 2120 –2446 2302 –2304 2302 –2162 2277 –1856 2277 –1728 2277 –1600 2277 –1472 2277 –1344 2277 –1216 2277 –1088 2277 –960 2277 –832 2277 –704 2277 –576 2277 –448 2277 –320 2277 –192 2277 –64 2277 64 2277 192 2277 320 2277 448 2277 576 Pad No. 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 — — — — Function SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 SEG41 SEG42 SEG43 Dummy1 Dummy2 Dummy3 Dummy4 X Coordinate Y 2277 704 2277 832 2277 960 2277 1088 2277 1216 2277 1344 2277 1472 2277 1600 2277 1728 2277 187