DocID029937 Rev 2
7/22
AN4943
LCD-TFT display on FSMC
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The Chrom-ART Accelerator™ (DMA2D) can update the whole image on the display (full
refresh) or only a part of it (partial refresh).
The configuration of the Chrom-ART Accelerator™ (DMA2D) (full or partial refresh) is done
by programming specific registers through the high level HAL library function as shown in
Section 4: Chrom-ART Accelerator™ (DMA2D) configuration in STM32CubeL4
.
3
LCD-TFT display on FSMC
3.1 Hardware
interface
description
The below signals are used to connect the Flexible Static Memory interface (FSMC) to the
LCD-TFT display:
Table 2. FSMC signals
Signal name
FSMC I/O
Function
A[25:0]
O
Address bus
D[15:0]
I/O
Bidirectional data bus
NE[x]
O
Chip select, x=1..4
NOE
O
Output enable
NWE
O
Write enable
Table 3. LCD-TFT signals
Signal name
(1)
1. The signal names are provided according the Type B Display Bus Interface (DBI) as described in the MIPI
Alliance standard for display bus interface.
LCD-TFT I/O
Function
D/CX
I
Data/command control signal
D[15:0]
I/O
Bidirectional information signals bus
CSX
I
Chip select control signal
RDX
I
Read control signal
WRX
I
Write control signal
TE
O
Tearing effect
RESX
I
Reset