HX8347 - Adafruit

HX8347-G(T)240RGB x 320 dot, 262K color, TFT Mobile Single Chip Driver4.1.3.2 4-wire serial interfaceDATA SHEET Preliminary V014-pin serial case, data packet contains just transmission byte and control bit DNC istransferred by DNC pin. If DNC is low, the transmission byte is command byte. If DNC ishigh, the transmission byte is stored to index register or GRAM. The MSB is transmittedfirst. The serial interface is initialized when NCS is high. In this state, NWR_SCL clockpulse or SDA data have no effect. A falling edge on NCS enables the serial interfaceand indicates the start of data transmission.4-Wire Serial Peripheral Interface ProtocolDNCNCSNWR_SCLSDAD7D6D5D4D3D2D1D0D7D6D5D4D3D2D1D0CommandParameterNCS can be "H" betweenCommand and parameterFigure 4.29: Index register write timing in 4-wire serial bus system interface16-bit Data Transfer Timing Format in 4-wire Serial Bus Interface for GRAM write ( Index 17h= 05)SCLSDAR14R13 R12 R11 R10 G15 G14 G13 G12 G11 G10B14B13B12B11B1016-bitLook-Up Table for 65K data mapping (16-bit to 18 bit)GRAM18-bitR1 G1 B1 R2 G2 B218-bit Data Transfer Timing Format in 4-wire Serial Bus Interface for GRAM write ( Index 17h= 06)SCLSDAR15R14R13 R12 R11 R10G15 G14 G13 G12 G11 G10B15B14B13B12B11B10GRAM18-bitR1 G1 B1 R2 G2 B2 R3 G3 B3Figure 4.30: Data write timing in 4-wire serial bus system interfaceHimax ConfidentialFor Go-tek OnlyThis information contained herein is the exclusive property of Himax and shall not be distributed, reproduced, or disclosedin whole or in part without prior written permission of Himax.-P.48-October, 2009