UMFT230XA-02 Datasheet, PDF (8/21 Pages) Future Technology Devices International Ltd. – UMFT230XA USB to Basic UART Development Module

UMFT230XA Datasheet
Version 1.4
D oc ument Reference N o.: FT _000519 C learance N o.: FT DI# 2 6 9
5 Module Configurations
5.1 Solder Link Configuration Options
Solder
Link No.
Setting
Status
Description
JP1
Shorted
Default
C onnects internal 3.3V regulator to VCCIO. This restricts signal drive to only 3.3V
level signals.
Disconnects internal 3.3V regulator connection to VCCIO. This mode allows for the
JP1
Opened
Non-
supply of 1.8V-3.3V power from an external power supply, thus allows the
Default processing of signals with logic levels between 1.8V and 3.3V. VCCIO can be
adjusted to match the interface requirements of external circuitry.
Table 5.1 – Solder Links JP1 Pin Description
Solder
Link No.
Setting
Status
Description
JP2
Shorted Default C onnects VBUS to VCC. This mode is known as “BUS-Powered” mode.
JP2
Opened
Non-
Disconnects VBUS to VCC. This allows the supply of power form an external power
Default supply. This mode is known as “Self-Powered” mode.
Table 5.2 – Solder Links JP2 Pin Description
Note: There should never be more than one power output supplied to the same net. Failure to properly
remove solder from JP1 and JP2 can cause a direct short between two different power supplies (when a
self-powered set-up is applied and the USB bus is connected) resulting in damage to the UMFT230XA
module and the target circuit.
5.2 Solder Link Modifications
The UMFT230XA has two solder links fixed to the top side of the PCB. These solder link can be adjusted
by removing the solder linking the two PADs to produce an open o r by placing a solder bridge to produce
a short.
By default the UMFT230XA has both solder links shorting their pads. To allow for enhanced flexibility of
this module remove both solder links and wire the header pins according to the power setup required.
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