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HD66740 Datasheet(PDF) 4 Page - Hitachi Semiconductor |
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HD66740 Datasheet(HTML) 4 Page - Hitachi Semiconductor |
4 / 95 page HD66740 4 LCD Specification Comparison (Under development) Items HD66725 HD66728 HD66740 Character display sizes 16 characters x 3 lines 16 characters x 10 lines — Graphic display sizes 96 x 26 dots 112 x 80 dots 112 x 80 dots Multiplexing icons 192 — — Annunciator 1/2 duty: 192 — — Key scan control 8 x 4 8 x 4 — LED control ports — — — General output ports 3 3 — Operating power voltages 1.8 V to 5.5 V 1.8 V to 5.5 V 1.8 V to 3.6 V Liquid crystal drive voltages 3 V to 6 V 4.5 V to 15 V 4.5 V to 15 V I2C bus — — I2C bus interface (HD66740W) Serial bus Clock-synchronized serial Clock-synchronized serial Clock-synchronized serial Parallel bus 4 bits, 8 bits 4 bits, 8 bits 4 bits, 8 bits Expansion driver control Impossible Impossible Impossible Liquid crystal drive duty ratios 1/2, 10, 18, 26 1/8, 16, 24, 32, 40, 48, 56, 64 72, 80 1/8, 16, 24, 32, 40, 48, 56, 64 72, 80 Liquid crystal drive biases 1/4 to 1/6.5 1/4 to 1/10 1/4 to 1/10 Liquid crystal drive waveforms B B, C B, C Liquid crystal voltage booster Single, double, or triple Triple, quadruple, or five- times Triple, quadruple, or five- times Bleeder-resistor for liquid crystal drive Incorporated (external) Incorporated (external) Incorporated (external) Liquid crystal drive operational amplifier Incorporated Incorporated Incorporated Liquid crystal contrast adjuster Incorporated Incorporated Incorporated Horizontal smooth scroll 3-dot unit — — Vertical smooth scroll Line unit Line unit Line unit Double-height display Yes Yes Yes DDRAM 80 x 8 160 x 8 — CGROM 20,736 20,736 — CGRAM 384 x 8 1,120 x 8 1,120 x 8 SEGRAM 96 x 8 — — No. of CGROM fonts 240 + 192 240 + 192 — No. of CGRAM fonts 64 64 — Font sizes 6 x 8 6 x 8 — Bit map areas 96 x 26 112 x 80 112 x 80 R-C oscillation resistor/ oscillation frequency External resistor, incorporated (32 kHz) External resistor (70–90 kHz) External resistor (70–90 kHz) Reset function External External External Low power control Partial display off Oscillation off Liquid crystal power off Key wake-up interrupt Partial display off Oscillation off Liquid crystal power off Key wake-up interrupt Partial display off Oscillation off Liquid crystal power off SEG/COM direction switching SEG, COM SEG, COM SEG, COM QFP package — — — TQFP package — — — TCP package TCP-170 TCP-243 TCP-233 Bare chip — — — Bumped chip Yes Yes Yes No. of pins 170 243 243 Chip sizes 10.97 x 2.51 13.67 x 2.78 9.40 x 2.18 Pad intervals 80 µm 70 µm 50 µm |
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