FT232RQ FTDI, FT232RQ Datasheet

IC, USB UART INTERFACE, QFN-32

FT232RQ

Manufacturer Part Number
FT232RQ
Description
IC, USB UART INTERFACE, QFN-32
Manufacturer
FTDI
Datasheet

Specifications of FT232RQ

Supply Voltage Range
1.8V To 5.25V, 3.3V To 5.25V
Operating Temperature Range
-40°C To +85°C
Digital Ic Case Style
QFN
No. Of Pins
32
Termination Type
SMD
Bandwidth
48MHz
Ic Generic Number
232
Filter Terminals
SMD
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Future Technology Devices International Ltd.
FT232R USB UART I.C.
Incorporating Clock Generator Output
and FTDIChip-ID™ Security Dongle
The FT232R is the latest device to be added to FTDI’s range of USB UART interface Integrated Circuit Devices. The
FT232R is a USB to serial UART interface with optional clock generator output, and the new FTDIChip-ID™ security
dongle feature. In addition, asynchronous and synchronous bit bang interface modes are available. USB to serial
designs using the FT232R have been further simplified by fully integrating the external EEPROM, clock circuit and
USB resistors onto the device.
The FT232R adds two new functions compared with its predecessors, effectively making it a “3-in-1” chip for some
application areas. The internally generated clock (6MHz, 12MHz, 24MHz, and 48MHz) can be brought out of the
device and used to drive a microcontroller or external logic. A unique number (the FTDIChip-ID™) is burnt into the
device during manufacture and is readable over USB, thus forming the basis of a security dongle which can be used
to protect customer application software from being copied.
The FT232R is available in Pb-free (RoHS compliant) compact 28-Lead SSOP and QFN-32 packages.
Copyright © Future Technology Devices International Ltd. 2005

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FT232RQ Summary of contents

Page 1

... Incorporating Clock Generator Output and FTDIChip-ID™ Security Dongle The FT232R is the latest device to be added to FTDI’s range of USB UART interface Integrated Circuit Devices. The FT232R is a USB to serial UART interface with optional clock generator output, and the new FTDIChip-ID™ security dongle feature. In addition, asynchronous and synchronous bit bang interface modes are available. USB to serial designs using the FT232R have been further simplifi ...

Page 2

... MAC OS-X • Linux 2.4 and greater The drivers listed above are all available to download for free from the FTDI website. Various 3rd Party Drivers are also available for various other operating systems - see the * Currently Under Development. Contact FTDI for availability. ...

Page 3

... USBDP and USBDM lines, and a 1.5 kΩ pull up resistor on USBDP. These three resistors have now been integrated onto the device. Integrated AVCC Filtering - Previous generations of FTDI’s USB UART devices had a separate AVCC pin - the supply to the internal PLL. This pin required an external R-C filter. The separate AVCC pin is now connected internally to VCC, and the fi ...

Page 4

... C thus allowing the device to be used in automotive and industrial applications. New Package Options - The FT232R is available in two packages - a compact 28 pin SSOP ( FT232RL) and an ultra-compact 5mm x 5mm pinless QFN-32 package ( FT232RQ). Both packages are lead ( Pb ) free, and use a ‘green’ compound. Both packages are fully compliant with European Union directive 2002/95/EC. ...

Page 5

Block Diagram 3.1 Block Diagram (Simplified) VCC 3.3 Volt LDO 3V3OUT Regulator USB Transceiver USBDP Serial Interface with Integrated Series USBDM Resistors and 1.5K Pull-up USB DPLL OSCO (optional) Internal 12MHz Multiplier / OCSI Oscillator (optional) TEST GND Figure ...

Page 6

... This gives achievable baud rates in the range 183.1 baud to 3,000,000 baud. When a non-standard baud rate is required simply pass the required baud rate value to the driver as normal, and the FTDI driver will calculate the required divisor, and set the baud rate. See FTDI application note AN232B-05 for more details. ...

Page 7

Device Pin Out and Signal Descriptions 4.1 28-LD SSOP Package TXD DTR# RTS# VCCIO RXD RI# GND NC DSR# DCD# CTS# CBUS4 CBUS2 CBUS3 Figure Pin SSOP Package Pin Out Figure Pin SSOP ...

Page 8

... Configurable CBUS I/O Pin. Function of this pin is configured in the device internal EEPROM. Factory Default function is TXLED#. See CBUS Signal Options, * Contact FTDI technical support FT232R. ** When used in Input Mode, these pins are pulled to VCCIO via internal 200kΩ resistors. These pins can be programmed to gently pull low during USB suspend ( PWREN# = “ ...

Page 9

... Figure 4 - QFN-32 Package Pin Out Figure 5 - QFN-32 Package Pin Out (Schematic Symbol) FT232R USB UART I.C. Datasheet Version 1. FTDI YYXX-A FT232RQ AGND CBUS0 22 CBUS1 21 GND 20 VCC 19 RESET# 18 GND VCCIO 19 VCC 15 USBDM 14 USBDP 5 NC FT232RQ RESET OSCI 28 OSCO 16 3V3OUT VCCIO 1 RXD 2 RI# 3 GND 4 ...

Page 10

... Configurable CBUS I/O Pin. Function of this pin is configured in the device internal EEPROM. Factory Default function is TXLED#. See CBUS Signal Options, * Contact FTDI technical support FT232R. ** When used in Input Mode, these pins are pulled to VCCIO via internal 200kΩ resistors. These pins can be programmed to gently pull low during USB suspend ( PWREN# = “ ...

Page 11

... BitBangWRn CBUS0, CBUS1, CBUS2, CBUS3 BitBangRDn CBUS0, CBUS1, CBUS2, CBUS3 FT232R USB UART I.C. Datasheet Version 1.04 FTDI website. The default configuration is described in Description Enable transmit data for RS485 Goes low after the device is configured by USB, then high during USB suspend ...

Page 12

... Package Parameters The FT232R is supplied in two different packages. The FT232RL is the SSOP-28 option and the FT232RQ is the QFN-32 package option. The solder reflow profile for both packages is described in 5.1 SSOP-28 Package Dimensions 7.80 +/-0.40 5.30 +/-0.30 1 0.30 +/-0.012 0.65 +/-0.026 ...

Page 13

... Figure 7 - QFN-32 Package Dimensions The FT232RQ is supplied in a RoHS compliant leadless QFN-32 package. The package is lead ( Pb ) free, and uses a ‘green’ compound. The package is fully compliant with European Union directive 2002/95/EC. This package has a compact 5.00mm x 5.00mm body. The solder pads are on a 0.50mm pitch. The above mechanical drawing shows the QFN-32 package – ...

Page 14

QFN-32 Package Typical Pad Layout 0.500 Optional GND Connection 0.30 0.200 Min Figure 8 - Typical Pad Layout for QFN-32 Package 5.4 QFN-32 Package Typical Solder Paste Diagram 0.500 0.30 0.200 Min 0.100 Figure 9 - Typical Solder Paste ...

Page 15

Solder Reflow Profile The FT232R is supplied in Pb free 28 LD SSOP and QFN-32 packages. The recommended solder reflow profile for both package options is shown in Figure 10 Max S T Min ...

Page 16

Device Characteristics and Ratings 6.1 Absolute Maximum Ratings The absolute maximum ratings for the FT232R devices are as follows. These are in accordance with the Absolute Maximum Rating System (IEC 60134). Exceeding these may cause permanent damage to the ...

Page 17

Table 9 - UART and CBUS I/O Pin Characteristics (VCCIO = 2.8V, Standard Drive Level) Parameter Description Voh Output Voltage High Vol Output Voltage Low Vin Input Switching Threshold VHys Input Switching Hysteresis Table 10 - UART and CBUS I/O ...

Page 18

... Unit 15 Years 100,000 Cycles Value Min Typical Max 11.98 12.00 12.02 83.19 83.33 83. Min Typ 2.8 - 0.1 - 1.8 2.5 FTDI technical support. Unit MHz**** ns % Max Units Conditions 3.6 V Fosc = 12MHz 1.0 V Fosc = 12MHz 3.2 V © Future Technology Devices International Ltd. 2005 ...

Page 19

... Device Configurations Please note that pin numbers on the FT232R chip in this section have deliberately been left out as they vary between the FT232RL and FT232RQ versions of the device. All of these configurations apply to both package options for the FT232R device. Please refer to Section 4 7.1 Bus Powered Confi ...

Page 20

Self Powered Configuration SHIELD GND 100nF 100nF Figure 12 Self Powered Configuration Figure 12 illustrates the FT232R in a typical USB self powered configuration. A USB Self Powered device gets its power from its ...

Page 21

USB Bus Powered with Power Switching Configuration 10nF 5 SHIELD 100nF Figure 13 - Bus Powered with Power Switching Configuration USB Bus powered circuits need to be able to power down in USB suspend mode ...

Page 22

USB Bus Powered with 3. Supply and Logic Drive / IO Supply Voltage Ferrite 10nF + 5 SHIELD GND 100nF Figure 14 - Bus Powered with 3. Supply and Logic Drive ...

Page 23

... As in the Device Configurations section, please note that pin numbers on the FT232R chip in this section have deliberately been left out as they vary between the FT232RL and FT232RQ versions of the device. All of these configurations apply to both package options for the FT232R device. Please refer to pin-out and signal descriptions. 8.1 USB to RS232 Converter Confi ...

Page 24

USB to RS485 Converter Configuration Ferrite Bead 10nF + 5 SHIELD + 100nF 4.7uF Figure 16 - Example USB to RS485 Converter Configuration Figure 16 illustrates how to connect the FT232R’s UART interface to a ...

Page 25

USB to RS422 Converter Configuration Vcc Ferrite Bead 10nF + 5 SHIELD Vcc + 100nF 4.7uF Figure 17 -Example USB to RS422 Converter Configuration Figure 17 illustrates how to connect the UART interface of the ...

Page 26

USB to MCU UART Interface GND Vcc + 4.7uF 100nF GND Figure 18 -Example USB to MCU UART Interface Figure example of interfacing the FT232R to a Microcontroller (MCU) UART interface. ...

Page 27

LED Interface Any of the 5 CBUS I/O pins can be configured to drive an LED. The FT232R has 3 options for driving an LED - these are TXLED#, RXLED#, and TX&RXLED#. Figure 19 -Dual LED Configuration Figure 19 ...

Page 28

... FTDI website. Version 2.8a or later is required for the FT232R chip. Users who do not have their own USB Vendor ID but who would like to use a unique Product ID in their design can apply to FTDI for a free block of unique PIDs. Contact FTDI support FT232R USB UART I ...

Page 29

... This product or any variant not intended for use in any medical appliance, device or system in which the failure of the product might reasonably be expected to result in personal injury. This document provides preliminary information that may be subject to change without notice. Contact FTDI Head Office - Future Technology Devices International Ltd. ...

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