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PCF88331 数据表(PDF) 28 Page - NXP Semiconductors |
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PCF88331 数据表(HTML) 28 Page - NXP Semiconductors |
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28 / 112 page  2003 Feb 14 28 Philips Semiconductors Objective specification STN RGB - 132 × 132 × 3 driver PCF8833 6.2.22 COLOUR SET With the Colour set (RGBSET) command the mapping from the 256-colour interface data is translated to the 4 kbyte colour RAM data of the PCF8833 can be changed. The translation table must be changed, if necessary, before sending 256 colour data. For the red and green pixel 8 from the available 16 grey scales can be selected. For the blue pixel 4 from the 16 grey scales can be selected. The default or reset state of the colour mapping can be found in Table 32. If the 256-to-4 kbyte colour mapping needs to be changed, the whole table must be sent. The mapping of colours is done when writing data into the RAM, through the application of the Look-Up Table (LUT). Table 32 Colour set register bits 6.2.23 PARTIAL AREA The Partial area command (PTLAR) sets the partial display area and displays the RAM content of this area. In the partial Display mode the drive voltage can be reduced. Table 33 Partial area register bits D/C D7 D6 D5 D4 D3 D2 D1 D0 DEFAULT DESCRIPTION 000101101 2DH 1 X X X X R3 R2 R1 R0 00H red tone 000 1 X X X X R3 R2 R1 R0 02H red tone 001 1 X X X X R3 R2 R1 R0 04H red tone 010 1 X X X X R3 R2 R1 R0 06H red tone 011 1 X X X X R3 R2 R1 R0 09H red tone 100 1 X X X X R3 R2 R1 R0 0BH red tone 101 1 X X X X R3 R2 R1 R0 0DH red tone 110 1 X X X X R3 R2 R1 R0 0FH red tone 111 1 X X X X G3 G2 G1 G0 00H green tone 000 1 X X X X G3 G2 G1 G0 02H green tone 001 1 X X X X G3 G2 G1 G0 04H green tone 010 1 X X X X G3 G2 G1 G0 06H green tone 011 1 X X X X G3 G2 G1 G0 09H green tone 100 1 X X X X G3 G2 G1 G0 0BH green tone 101 1 X X X X G3 G2 G1 G0 0DH green tone 110 1 X X X X G3 G2 G1 G0 0FH green tone 111 1 X X X X B3 B2 B1 B0 00H blue tone 00 1 X X X X B3 B2 B1 B0 04H blue tone 01 1 X X X X B3 B2 B1 B0 0BH blue tone 10 1 X X X X B3 B2 B1 B0 0FH blue tone 11 D/C 76543210 DEFAULT 000110000 30H 1 AA1S7 AA1S6 AA1S5 AA1S4 AA1S3 AA1S2 AA1S1 AA1S0 tbf 1 AA1E7 AA1E6 AA1E5 AA1E4 AA1E3 AA1E2 AA1E1 AA1E0 tbf |
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