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EM62100AGH Datasheet(PDF) 28 Page - ELAN Microelectronics Corp |
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EM62100AGH Datasheet(HTML) 28 Page - ELAN Microelectronics Corp |
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28 / 60 page ![]() EM62100 65 COM/132 SEG STN LCD Driver 22 • ••• Product Specification (V1.1) 09.13.2005 (This specification is subject to change without further notice) V0 = (1+ Ra Rb ) x VEV = (1+ Ra Rb ) x (1- 162 63 − ) x VREG ------------------- (a) VEV Rb V 0 V SS V OUT - + VEV (constant voltage supply + electronic volume) Fig. 9 VREG is the IC internal fixed voltage supply, and its voltage at Ta = 25°C is as shown below. Equipment Type Thermal Gradient Units VREG Internal power supply -0.05 % / 2.1 The α is set to 1 level of 64 possible levels of the electronic volume function depending on the data set in the 6-bit electronic volume register. Table 12 shows the value for α depending on the electronic volume register settings. Table 12 D5 D4 D3 D2 D1 D0 V0 0 0 0 0 0 0 0 Minimum 0 0 0 0 0 1 1 : 0 0 0 0 1 0 2 : : : : : 1 0 0 0 0 0 32 (Default) : : : : 1 1 1 1 1 0 62 : 1 1 1 1 1 1 63 Maximum Rb/Ra is the V0 voltage regulator internal resistor ratio and can be set to 8 different levels through the V0 voltage regulator internal resistor ratio set command. The (1+Rb/Ra) ratio assumes the values shown in Table 13 depending on the 3-bit data settings in the V0 voltage regulator internal resistor ratio register. |
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