FT232RL datasheet(9/40 Pages) FTDI

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FT232R USB UART IC Datasheet

Version 2.16

Document No.: FT_000053 Clearance No.: FTDI# 38

3.3 QFN-32 Package

Figure 3.2 QFN-32 Package Pin Out and schematic symbol

3.4 QFN-32 Package Signal Description

Pin No.

Name

Type

Description

USBDP

I/O

USB Data Signal Plus, incorporating internal series resistor and 1.5kΩ pull

up resistor to +3.3V.

USBDM

I/O

USB Data Signal Minus, incorporating internal series resistor.

Table 3.5 USB Interface Group

Pin No.

Name

Type

Description

VCCIO

PWR

+1.8V to +5.25V supply for the UART Interface and CBUS group pins (2,3,

6,7,8,9,10,11,21,22,30,31,32). In USB bus powered designs connect this

pin to 3V3OUT to drive out at +3.3V levels, or connect to VCC to drive out

at +5V CMOS level. This pin can also be supplied with an external +1.8V

to +2.8V supply in order to drive out at lower levels. It should be noted

that in this case this supply should originate from the same source as the

supply to VCC. This means that in bus powered designs a regulator which

is supplied by the +5V on the USB bus should be used.

4, 17,

GND

PWR

Device ground supply pins.

3V3OUT

Output

+3.3V output from integrated LDO regulator. This pin should be decoupled

FT232RL Datasheet(PDF) 9 Page - Future Technology Devices International Ltd.