DS_UMFT311GP 参数 Datasheet PDF下载

DS_UMFT311GP Datasheet

Version 1.0

Document No.: FT_000690 Clearance No.: FTDI# 304

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Function Description

The FT311 GPIO Board is intended for use as a hardware platform to enable easy evaluation of GPIO and

PWM interfaces in the FT311D Development Module. The FT311 GPIO Board has LEDs and switches to

validate the GPIO and PWM interface of the FT311D device by a user to begin developing Android Open

Accessory applications based on the FT311D device. The FT311 GPIO Board can also be used with the

Vinco Development Module as a LED and keypad interface.

3.1 Key Features

FT311 GPIO Board consists of

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8 LEDs. They are LED7, LED6, LED5, LED4, LED3, LED2, LED1 and LED0

8 switches. They are PB7, PB6, PB5, PB4, PB3, PB2, PB1 and PB0

8 jumpers for enabling 3.3V supply for the LEDs. They are JP7, JP6, JP5, JP4, JP3, JP2,

JP1 and JP0

Connector P8 to interface with the FT311D Module

Power supply socket CN1 to connect external 5V DC supply.

Connectors to interface with Vinco Development Module. They are J1, J2, J3, J4, J5 and

J6

Voltage regulator U1 to convert 5V to 3.3V

3.2 Functional Block Descriptions

The following paragraphs describe each function within FT311 GPIO Board. Please refer

to the block diagram shown in

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Power Supply

The FT311 GPIO Board consists of a power supply socket CN1. External power is

plugged into CN1. The 5V power is converted to 3.3V using linear voltage regulator U1.

Jumpers

The Jumpers JP7-JP0 are used to open or close a 3.3V supply to the corresponding

resistors R7-R0.

Resistors

The resistors R7-R0 are the current limiting resistors limiting the current flow to the

corresponding LED.

LEDs

The LED7–LED0 can be controlled from any of the 3 interfaces; Push Button Switch,

FT311D Module Interface Connector and Vinco Interface connectors.

Push Button Switch

The Push Button Switches PB7-PB0 can be used to switch ON the LEDs. When a Push

button switch is pressed the corresponding LED is ON. When Push button switch is not

pressed the LED is OFF. The Push button will send a logic 1 in the default state and

logic 0 in the pressed state to the corresponding interface pins to act as GPIO inputs to

the FT311D device.

Copyright © 2012 Future Technology Devices International Limited

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