VM800C Datasheet
Version 1.0
Document Reference No.: FT_000844
Clearance No.: FTDI#
345
The VM800C module is intended for direct use into existing applications that require a display.This
module is suitable for interfacing with an external microcontroller that has a SPI Master channel.
The VM800C module PCB comes in 2 types , 3.5 inch as well as a 4.3/5 inch model. The difference
between the 2 models is the flex cable receptical of the LCD. The 3.5 inch LCD uses a 54 pin receptical,
whereas the 4.3/5 inch model uses a 40 pin receptical.
The main functions of the VM800C are as follows:
Micro USB, SPI connector or 2-pin connector for power supply
3.3V regulator : Takes 5V input and outputs 3.3V for on-board circuits
LCD touch screen panel
LCD backlight driver. On board back light driver has over voltage protection (OVP).
Part No
VM800C35A-N
VM800C43A-N
VM800C35A-D
VM800C43A-D
VM800C50A-D
OVP (v)
34
34
24
24
Backlight drive current
(mA)
20
32
20
32
32
24
Table 3-1 LED backlight drive OVP and current
5V tolerant buffers between the SPI master interface and the Slave interface of the FT800
o
SPI timing requirement can be referred to FT800 datasheet. The on board level convert
buffers introduce additional delay. The actual maximum SPI clock frequency depends on
the host system timing and connection cable length to VM800C.
3 stage audio filter and power amplifier
8Ω speaker
Audio line out option
3.2
Physical Descriptions
3.2.1
PCB layout
The VM800C module is 85.6 x 54.1mm, four-layer printed circuit board. Board thickness is
approximately 1.6mm.
5
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