Data Sheet
a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9341
The information contained herein is the exclusive property of ILI Technology Corp. and shall not be distributed,
reproduced, or disclosed in whole or in part without prior written permission of ILI Technology Corp.
Page 120 of 233
8.2.26. Vertical Scrolling Definition (33h)
33h VSCRDEF (Vertical Scrolling Definition)
D/CX
RDX
WRX
D17-8 D7 D6 D5 D4 D3 D2 D1 D0 HEX
Command 0 1
↑
XX 0 0 1 1 0 0 1 1 33h
1
st
Parameter
1
↑
1 XX TFA [15:8] 00
2
nd
Parameter
1
↑
1 XX TFA [7:0] 00
3
rd
Parameter
1
↑
1 XX VSA [15:8] 01
4
th
Parameter
1
↑
1 XX VSA [7:0] 40
5
th
Parameter
1
↑
1 XX BFA [15:8] 00
6
th
Parameter
1
↑
1 XX BFA [7:0] 00
Description
This command defines the Vertical Scrolling Area of the display.
When MADCTL B4=0
The 1st & 2nd parameter TFA [15...0] describes the Top Fixed Area (in No. of lines from Top of the Frame Memory and
Display).
The 3rd & 4th parameter VSA [15...0] describes the height of the Vertical Scrolling Area (in No. of lines of the Frame
Memory [not the display] from the Vertical Scrolling Start Address). The first line read from Frame Memory appears
immediately after the bottom most line of the Top Fixed Area.
The 5th & 6th parameter BFA [15...0] describes the Bottom Fixed Area (in No. of lines from Bottom of the Frame Memory
and Display). TFA, VSA and BFA refer to the Frame Memory Line Pointer.
Top Fixed Area
Bottom Fixed Area
TFA[15:0]
BFA[15:0]
(0, 0)
First line
read from
memory
Scroll Area
When MADCTL B4=1
The 1st & 2nd parameter TFA [15...0] describes the Top Fixed Area (in No. of lines from Bottom of the Frame Memory and
Display).
The 3rd & 4th parameter VSA [15...0] describes the height of the Vertical Scrolling Area (in No. of lines of the Frame
Memory [not the display] from the Vertical Scrolling Start Address). The first line read from Frame Memory appears
immediately after the top most line of the Top Fixed Area.
The 5th & 6th parameter BFA [15...0] describes the Bottom Fixed Area (in No. of lines from Top of the
Frame Memory and Display).