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ST7789V2 Datasheet(PDF) 229 Page - Sitronix Technology Co., Ltd. |
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ST7789V2 Datasheet(HTML) 229 Page - Sitronix Technology Co., Ltd. |
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229 / 319 page  ST7789V2 Version 1.0 Page 229 of 319 2016/11 Sitronix Confidential The information contained herein is the exclusive property of Sitronix and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of Sitronix. 9.1.34 RDMEMC (3Eh): Read Memory Continue 3EH RDMEMC (Read Memory Continue) Inst / Para D/CX WRX RDX D17-8 D7 D6 D5 D4 D3 D2 D1 D0 HEX RDMEMC 0 ↑ 1 - 0 0 1 1 1 1 1 0 (3Eh) 1ST parameter 1 1 ↑ - - - - - - - - - 2nd parameter 1 1 ↑ D1[17]-D1[8] D1[7] D1[6] D1[5] D1[4] D1[3] D1[2] D1[1] D1[0] 1 1 ↑ Dx[17]-Dx[8] Dx[7] Dx[6] Dx[5] Dx[4] Dx[3] Dx[2] Dx[1] Dx[0] Nth parameter 1 1 ↑ Dn[17]-Dn[8] Dn[7] Dn[6] Dn[5] Dn[4] Dn[3] Dn[2] Dn[1] Dn[0] Description -This command transfers image data from the host processor to the display module’s frame memory continuing from the pixel location following the previous read memory continue or memory read command. -If MV=0: Pixels are read continuing from the pixel location after the read range of the previous memory read or read memory continue. The column register is then incremented and pixels are read from the frame memory until the column register equals the end column (XE) value. The column register is then reset to XS and the page register is incremented. Pixels are read from the frame memory until the page register equals the end page (YE) value and the column register equals the XE value, or the host processor sends another command. If MV=1: Pixels are read continuing from the pixel location after the read range of the previous memory read or read memory continue. The page register is then incremented and pixels are read from the frame memory until the page register equals the end page (YE) value. The page register is then reset to YS and the column register is incremented. Pixels are read from the frame memory until the column register equals the end column (XE) value and the page register equals the YE value, or the host processor sends another command. Restriction Regardless of the color mode set in interface pixel format, the pixel format returned by read memory continue is always 18-bit so there is no restriction on the length of data Register availability Status Availability Normal Mode On, Idle Mode Off, Sleep Out Yes Normal Mode On, Idle Mode On, Sleep Out Yes Partial Mode On, Idle Mode Off, Sleep Out Yes Partial Mode On, Idle Mode On, Sleep Out Yes Sleep In Yes Default Status Default Value Power On Sequence Contents of memory is set randomly S/W Reset Contents of memory is not cleared |
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