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S1D13706F00A Datasheet(PDF) 31 Page - Epson Company |
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S1D13706F00A Datasheet(HTML) 31 Page - Epson Company |
31 / 94 page ![]() S1D13305 Series EPSON 25 Technical Manual 8.2.1.8. WF Selects the AC frame drive waveform period. WF is usually set to 1. WF = 0: 16-line AC drive WF = 1: two-frame AC drive In two-frame AC drive, the WF period is twice the frame period. In 16-line AC drive, WF inverts every 16 lines. Although 16-line AC drive gives a more readable display, horizontal lines may appear when using high LCD drive voltages or at high viewing angles. 8.2.1.9. FY Sets the vertical character size. The height in pixels is equal to FY + 1. FY can range from 00 to 0FH inclusive. Set FY to zero (vertical size equals one) when in graphics mode. Table 4. Vertical character size selection FY [FY] character HEX D3 D2 D1 D0 height (pixels) 00 0000 1 01 0001 2 ↓ ↓↓↓↓ ↓ 07 0111 8 ↓ ↓↓↓↓ ↓ 0E 1110 15 0F 1111 16 8.2.1.10. C/R Sets the address range covered by one display line, that is, the number of characters less one, multiplied by the number of horizontal bytes per character. C/R can range from 0 to 239. For example, if the character width is 10 pixels, then the address range is equal to twice the number of characters, less 2. See Section 16.1.1 for the calculation of C/R. [C/R] cannot be set to a value greater than the address range. It can, however, be set smaller than the address range, in which case the excess display area is blank. The number of excess pixels must not exceed 64. Table 5. Display line address range C/R [C/R] bytes per display line HEX D7 D6 D5 D4 D3 D2 D1 D0 00 00000000 1 01 00000001 2 ↓ ↓↓↓↓↓↓↓↓ ↓ 4F 01001111 80 ↓ ↓↓↓↓↓↓↓↓ ↓ EE 11101110 239 EF 11101111 240 INSTRUCTION SET |
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