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 155 of 233
8.3.2. Frame Rate Control (In Normal Mode/Full Colors) (B1h)
B1h FRMCTR1 (Frame Rate Control (In Normal Mode / Full colors))
D/CX
RDX
WRX
D17-8 D7 D6 D5 D4 D3 D2 D1 D0 HEX
Command 0 1
↑
XX 1 0 1 1 0 0 0 1 B1h
1
st
Parameter
1 1
↑
XX 0 0 0 0 0 0 DIVA [1:0] 00
2
nd
Parameter
1 1
↑
XX 0 0 0 RTNA [4:0] 1B
Description
Formula to calculate frame frequency:
Frame Rate=
VFP)VBP (Lines x ratioDivision x lineper Clocks
fosc
++
Sets the division ratio for internal clocks of Normal mode at MCU interface.
fosc : internal oscillator frequency
Clocks per line : RTNA setting
Division ratio : DIVA setting
Lines : total driving line number
VBP : back porch line number
VFP : front porch line number
RTNA [4:0] Frame Rate (Hz)
RTNA [4:0] Frame Rate (Hz)
1
0
0
0
0
119 1
1
0
0
0
79
1
0
0
0
1
112 1
1
0
0
1
76
1
0
0
1
0
106 1
1
0
1
0
73
1
0
0
1
1
100 1
1
0
1
1
70(default)
1
0
1
0
0
95 1
1
1
0
0
68
1
0
1
0
1
90 1
1
1
0
1
65
1
0
1
1
0
86 1
1
1
0
1
63
1
0
1
1
1
83
1
1
1
1
1
61
DIVA [1:0]
: division ratio for internal clocks when Normal mode.
DIVA [1:0]
Division Ratio
0 0 fosc
0 1 fosc / 2
1 0 fosc / 4
1 1 fosc / 8
RTNA [4:0]
:
RTNA[4:0] is used to set 1H (line) period of Normal mode at MCU interface.
RTNA [4:0]
Clock per
Line
RTNA [4:0]
Clock per
Line
RTNA [4:0]
Clock per
Line
0
0
0
0
0
Setting prohibited
0
1
0
1
1
Setting prohibited
1
0
1
1
0
22 clocks
0
0
0
0
1
Setting prohibited
0
1
1
0
0
Setting prohibited
1
0
1
1
1
23 clocks
0
0
0
1
0
Setting prohibited
0
1
1
0
1
Setting prohibited
1
1
0
0
0
24 clocks
0
0
0
1
1
Setting prohibited
0
1
1
1
0
Setting prohibited
1
1
0
0
1
25 clocks
0
0
1
0
0
Setting prohibited
0
1
1
1
1
Setting prohibited
1
1
0
1
0
26 clocks
0
0
1
0
1
Setting prohibited
1
0
0
0
0
16 clocks 1
1
0
1
1
27 clocks
0
0
1
1
0
Setting prohibited
1
0
0
0
1
17 clocks 1
1
1
0
0
28 clocks
0
0
1
1
1
Setting prohibited
1
0
0
1
0
18 clocks 1
1
1
0
1
29 clocks
0
1
0
0
0
Setting prohibited
1
0
0
1
1
19 clocks 1
1
1
1
0
30 clocks
0
1
0
0
1
Setting prohibited
1
0
1
0
0
20 clocks 1
1
1
1
1
31 clocks
0
1
0
1
0
Setting prohibited
1
0
1
0
1
21 clocks