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68HC05CL48 Datasheet(PDF) 105 Page - Motorola, Inc |
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68HC05CL48 Datasheet(HTML) 105 Page - Motorola, Inc |
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105 / 145 page  June 11, 1997 GENERAL RELEASE SPECIFICATION MC68HC05CL48 LCD DRIVER MOTOROLA REV 2.0 12-9 12.5 ELECTRICAL REQUIREMENTS The contrast network will be monotonic under the normal operating conditions. Note: Both ladder resistors and the contrast resistors are implemented using poly resistor to minimize process and temperature variation. 12.5.1 DC Requirements The DC voltage between Front-plane to Back-plane will be less than 50mV, average over one frame. For VLCD = 3 to 5 volts and temperature range of –10°C to 70 °C. Table 12-4. Ladder Voltage Values VLCD=5.0 volts 4:1 Bias V5-V4 1.25 ± 4% V4-V3 1.25 ± 4% V3-V2 0 ± 4% V2-V1 1.25 ± 4% V1-V0 1.25 ± 4% Table 12-5. Contrast Resistor Values Resistor Resistor Values (ohm) +/- 25% RC0 10k RC1 20k RC2 40k RC3 80k R1 100k R2 100k R3 100k R4 100k R5 100k |
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