VNCLO-PSU-USA FTDI, Future Technology Devices International Ltd, VNCLO-PSU-USA Datasheet - Page 6

• Manufacturer Part Number: VNCLO-PSU-USA
• Description: POWER SUPPLY FOR VNCLO-MB1A USA
• Manufacturer: FTDI, Future Technology Devices International Ltd
• Series: Vinculor

Specifications of VNCLO-PSU-USA

• Accessory Type: Power Supply
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: FTDI Vinculo Boards
• Other names: 768-1092

3
3.1 Power
The Vinco module may be powered from the USB port on CN3 (5V) or via an external power converter
(9V/1A DC) to CN1 (for example the FTDI
As this application provides power to external circuitry (the LCD display), the Vinco is powered from an
external 9V supply.
To ensure this power source is routed to the PCB, JP1 on the Vinco module must be set to the 2-3
position.
Power from the Vinco module is taken from J1 pin 5 to give a +5V supply for the Topway LCD display.
3.2 LCD Control
The Topway LCD display may be controlled in either an 4-bit data mode or an 8-bit data mode. This
application uses the 4 bit data mode. These are the signals labelled DB4 – DB7 on the block diagram in
section 2. These and the remaining signals required between Vinco and the LCD display are described in
Table 3.1.
Table 3.1 - Signal Name and Description – LCD Interface
10k variable resistor between VO and
Interconnect
DB4-DB7
BLA/BLK
Signal
R/W
GND
RS
E
Copyright © 2010 Future Technology Devices International Limited
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VNCLO-PSU-UK)
The E bit is used to enable the device for access (E =
Tied to GND as the LCD is only ever written in this
information being sent to the LCD panel is display
Data lines for sending information to the LCD
Register Select is used to determine if the
data (RS=1) or an instruction (RS = 0).
allows for control of the LCD contrast
Supply (5V) for the LCD backlight
AN_153 Vinco LCD Interface Example
Function
Document Reference No.: FT_000332
demo.
1).
Clearance No.: FTDI# 177
Version
5
2.0