Copyright © 2013 Future Technology Devices International Limited

9

FT240X USB 8-BIT FIFO IC Datasheet

Version 1.3

Document No.: FT_000626 Clearance No.:

FTDI# 259

DATA7

2

DATA4

22

DATA5

4

DATA2

23

DATA3

6

SI/WU#

7

RD#

8

WR#

9

USBDP

10

USBDM

11

3V3OUT

12

RESET#

13

TXE#

17

RXF#

18

CBUS5

20

CBUS6

19

DATA0

21

DATA6

5

DATA1

1

Figure 3.2 QFN-24 Package Pin Out and schematic symbol

Note: The convention used throughout this document for active low signals is the signal name followed by

a #

Pin No.

Name

Type

Description

10

USBDP

I/O

USB Data Signal Plus, incorporating 1.5kΩ pull up resistor to 3.3V.

11

USBDM

I/O

USB Data Signal Minus.

Table 3.5 USB Interface Group

Pin No.

Name

Type

Description

24

VCCIO

PWR

1V8 - 3V3 supply for the IO cells

3, 16

GND

PWR

Device ground supply pins

12

**

3V3OUT

Output

3V3 output at 50mA. May be used to power VCCIO.

When VCC is 3V3; pin 12 is an input pin and should be connected to

pin 15.

15

**

VCC

PWR

+5V (or 3V3) supply to the device core.

14

VCORE

PWR

+1V8 Output. May be left unterminated

Table 3.6 Power and Ground Group

*Pin 25 is the centre pad on package base. Connect to GND.

**If VCC is 3V3 then 3V3OUT must also be driven with 3V3 input