Limitations; Table 19. Tft Lcd Module Connector Cn20 - ST STM32L4R9I-EVAL User Manual

UM2248
mount on STM32L4R9I-EVAL board with RGB mode.
CN20 and STM32L4R9AII6 terminals.
.
Pin RGB mode
No. description
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
9.30.1

Limitations

The TFT LCD module connector supports RGB mode or FMC mode only on the same time.
The signal INT is used both for TFT LCD and DSI display connector. When RGB mode TFT
LCD used, STM32L4R9AII6 cannot access SRAM and NOR Flash memory on board.

Table 19. TFT LCD module connector CN20

FMC mode
description
GND GND
R0 -
R1 RS(A19)
R2 D12
R3 D13
R4 D14
R5 D15
R6 -
R7 -
GND GND
B0 -
B1 -
B2 D0
B3 D1
B4 D2
B5 D3
B6 D4
B7 D5
GND GND
INT INT
- RS
BL_CTRL BL_CTRL
BL+5 V BL+5 V
BLGND BLGND
BLGND BLGND
DocID030791 Rev 2
Hardware layout and configuration
Table 19
Pin Pin RGB mode
connection No. description
- 2
PE2 4
PE3 6
PE15 8
PD8 10
PD9 12
PD10 14
PD11 16
PD12 18
- 20
PE4 22
PF13 24 LCD_DSIP
PD14 26 HSYNC
PD15 28 VSYNC
PD0 30
PD1 32
PE7 34
PE8 36
- 38
PC2 40
PE2 42
PA5 44
- 46
- 48
- 50
shows the assignment of
FMC mode
description
GND GND
G0 -
G1 -
G2 D6
G3 D7
G4 D8
G5 D9
G6 D10
G7 D11
GND GND
DE TE
-
-
-
GND GND
PCLK -
GND GND
RST# RST#
SDA SDA
SCL SCL
- NOE
- NWE
- CS
VDD VDD
+3.3 V +3.3 V
Pin
connection
-
PF14
PF15
PE9
PE10
PE11
PE12
PE13
PE14
-
PF11
MFX_
GPIO11
PE0
PE1
-
PD3
-
MFX_
GPIO12
PH5
PH4
PD4
PD5
PG12
-
-
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