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 159 of 233
8.3.4. Frame Rate control (In Partial Mode/Full Colors) (B3h)
B3h FRMCTR3 (Frame Rate Control (In Partial 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 1 1 B3h
1
st
Parameter
1 1
↑
XX 0 0 0 0 0 0 DIVC [1:0] 00
2
nd
Parameter
1 1
↑
XX 0 0 0 RTNC [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 Partial mode (Idle mode off) at MCU interface.
fosc : internal oscillator frequency
Clocks per line : RTNC setting
Division ratio : DIVC setting
Lines : total driving line number
VBP : back porch line number
VFP : front porch line number
RTNC [4:0] Frame Rate (Hz)
RTNC [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
DIVC [1:0]
: division ratio for internal clocks when Partial mode.
DIVC [1:0]
Division Ratio
0 0 fosc
0 1 fosc / 2
1 0 fosc / 4
1 1 fosc / 8
RTNC [4:0]
:
RTNC [4:0] is used to set 1H (line) period of Partial mode at MCU interface.
RTNC [4:0]
Clock per
Line
RTNC [4:0]
Clock per
Line
RTNC [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