IC, USB FIFO INTERFACE, SSOP-28

FT245RL

Manufacturer Part NumberFT245RL
DescriptionIC, USB FIFO INTERFACE, SSOP-28
ManufacturerFTDI
FT245RL datasheet
 


Specifications of FT245RL

Data Rate1MbpsSupply Voltage Range1.8V To 5.25V, 3.3V To 5.25V
Operating Temperature Range-40°C To +85°CDigital Ic Case StyleSSOP
No. Of Pins28Termination TypeSMD
Ic Generic Number245Filter TerminalsSMD
Rohs CompliantYesLead Free Status / RoHS StatusLead free / RoHS Compliant
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Future Technology Devices International Ltd.
FT245R USB FIFO I.C.
Incorporating FTDIChip-ID™ Security Dongle
The FT245R is the latest device to be added to FTDI’s range of USB FIFO interface Integrated Circuit Devices.
The FT245R is a USB to parallel FIFO interface, with the new FTDIChip-ID™ security dongle feature. In addition,
asynchronous and synchronous bit bang interface modes are available. USB to parallel designs using the FT245R
have been further simplified by fully integrating the external EEPROM, clock circuit and USB resistors onto the device.
The FT245R adds a new function compared with its predecessors, effectively making it a “2-in-1” chip for some
application areas. 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 FT245R is available in Pb-free (RoHS compliant) compact 28-Lead SSOP and QFN-32 packages.
Copyright © Future Technology Devices International Ltd. 2005

FT245RL Summary of contents

  • Page 1

    ... FT245R USB FIFO I.C. Incorporating FTDIChip-ID™ Security Dongle The FT245R is the latest device to be added to FTDI’s range of USB FIFO interface Integrated Circuit Devices. The FT245R is a USB to parallel FIFO interface, with the new FTDIChip-ID™ security dongle feature. In addition, asynchronous and synchronous bit bang interface modes are available. USB to parallel designs using the FT245R 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

    ... Enhanced Asynchronous Bit Bang Mode with RD# and WR# Strobes - The FT245R supports FTDI’s BM chip bit bang mode. In bit bang mode, the eight parallel FIFO data bus lines can be switched from the regular interface mode to an 8-bit general purpose I/O port ...

  • Page 4

    ... Extended Operating Temperature Range - The FT232R operates over an extended temperature range of -40º to +85º C thus allowing the device to be used in automotive and industrial applications. New Package Options - The FT245R is available in two packages - a compact 28 pin SSOP ( FT245RL) and an ultra-compact 5mm x 5mm pinless QFN-32 package ( FT245RQ). Both packages are lead ( Pb ) free, and use a ‘ ...

  • 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 1 ...

  • Page 6

    USB Protocol Engine - The USB Protocol Engine manages the data stream from the device USB control endpoint. It handles the low level USB protocol (Chapter 9) requests generated by the USB host controller and the commands for controlling the ...

  • Page 7

    ... Device Pin Out and Signal Descriptions 4.1 28-LD SSOP Package VCCIO D1 D7 GND PWREN# RD# WR Figure Pin SSOP Package Pin Out Figure Pin SSOP Package Pin Out (Schematic Symbol) FT245R USB UART I.C. Datasheet Version 1. VCCIO 20 VCC 16 USBDM 15 USBDP FT245RL RESET OSCI 28 OSCO 17 3V3OUT ...

  • Page 8

    ... USB bus. *Contact FTDI Support for details of how to use an external crystal, ceramic resonator, or oscillator with the FT245R. ** When used in Input Mode, these pins are pulled to VCCIO via internal 200kΩ resistors. These can be programmed to gently pull low during USB suspend ( PWREN# = “ ...

  • Page 9

    ... QFN-32 Package TOP BOTTOM Figure 4 - QFN-32 Package Pin Out Figure 5 - QFN-32 Package Pin Out (Schematic Symbol) FT245R USB UART I.C. Datasheet Version 1. FTDI YYXX-A FT245RQ AGND RXF# 22 TXE# 21 GND 20 VCC 19 RESET# 18 GND VCCIO 19 VCC 15 USBDM 14 USBDP 5 NC FT245RQ RESET OSCI ...

  • Page 10

    ... RXF# becomes an input which can be used to wake up the host from suspend mode. Strobing the pin low will cause the device to request a resume on the USB bus. *Contact FTDI Support for details of how to use an external crystal, ceramic resonator, or oscillator with the FT245R. ** When used in Input Mode, these pins are pulled to VCCIO via internal 200kΩ resistors. These can be programmed to gently pull low during USB suspend ( PWREN# = “ ...

  • Page 11

    FT245R FIFO Timing Diagrams Figure 6 - FIFO Read Cycle RXF# RD# T3 D[7...0] Table 3 - FIFO Read Cycle Timings Time Description T1 RD Active Pulse Width Pre-Charge Time T3 RD Active to Valid ...

  • Page 12

    ... Figure 8 - SSOP-28 Package Dimensions The FT245RL is supplied in a RoHS compliant 28 pin SSOP 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 5.30mm x 10.20mm body ( 7.80mm x 10.20mm including pins ). The pins are on a 0.65 mm pitch. ...

  • Page 13

    ... The centre pad on the base of the FT245RQ is not internally connected, and can be left unconnected, or connected to ground (recommended). The date code format is YYXX where digit week number digit year number. FT245R USB UART I.C. Datasheet Version 1.05 TOP 32 1 FTDI YYXX-A FT245RQ 8 9 5.000 25 ...

  • Page 14

    QFN-32 Package Typical Pad Layout 0.500 Optional GND Connection 0.30 0.200 Min Figure 10 - 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 11 - Typical Solder Paste ...

  • Page 15

    Solder Reflow Profile The FT245R 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 12 Max S T Min ...

  • Page 16

    Device Characteristics and Ratings 6.1 Absolute Maximum Ratings The absolute maximum ratings for the FT245R 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 10 - FIFO Interface and Control Bus 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 11 - FIFO Interface and ...

  • 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 FT245R chip in this section have deliberately been left out as they vary between the FT245RL and FT245RQ versions of the device. All of these configurations apply to both package options for the FT245R device. Please refer to Section 4 7.1 Bus Powered Confi ...

  • Page 20

    Self Powered Configuration SHIELD GND 100nF 100nF Figure 14 Self Powered Configuration Figure 14 illustrates the FT245R 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 15 - 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 16 - Bus Powered with 3. Supply and Logic Drive ...

  • Page 23

    Example Interface Configurations 8.1 USB to MCU FIFO Interface Example GND Vcc + 4.7uF 100nF GND Figure 17 -Example USB to MCU FIFO Interface Figure 17 illustrates a typical interfacing between the FT245R and ...

  • Page 24

    ... FTDI website. Version 2.8a or later is required for the FT245R 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 FT245R USB UART I ...

  • Page 25

    ... 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. ...