Future Technology Devices International Ltd UM245R USB - Parallel FIFO Development Module Datasheet Document Reference No.: FT_000202 Version 1.04 Issue Date: 2009-12-10 Future Technology Devices International Ltd (FTDI) Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41 1HH, United Kingdom Tel: +44 (0) 141 429 2777, Fax: +44 (0) 141 429 2758 E-Mail (Support): support1@ftdichip.com Web: http://www.ftdichip.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 1 Introduction The UM245R is a development module which uses FTDI‟s FT245RL, the latest device to be added to FTDI‟s range of USB to parallel 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.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 Table of Contents 1 Introduction .................................................................... 1 2 Typical Applications ........................................................ 3 3 2.1 Driver Support .......................................................................... 3 2.2 Features ..............................................................................
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 2.2 Features The UM245R USB Parallel FIFO has the following features: Single chip USB to parallel FIFO bidirectional data transfer interface. Integrated 3.3V level converter for USB I/O. Integrated level converter on FIFO interface Entire USB protocol handled on the chip – No USB-specific firmware programming required.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 3 FT245RL Features and Enhancement 3.1 Key Features This section summarises the key features and enhancements of the FT245R IC device which is used in the UM245R Module. For further details, consult the FT245R datasheet, which is available from the FTDI website.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 5V / 3.3V / 2.8V / 1.8V Logic Interface – The FT245R provides true CMOS Drive Outputs and TTL level Inputs. Integrated Power-On-Reset (POR) Circuit – The device incorporates an internal POR function. A RESET# pin is available in order to allow external logic to reset the FT245R where required. With many applications the RESET# pin can be left unconnected, or pulled up to VCCIO.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 4 UM245R Pin Out and Signal Descriptions 4.1 UM245R Pin Out Figure 4.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 4.2 Signal Descriptions Pin No. Name Type Description 1 DB0 I/O FIFO Data Bus Bit 0* 2 DB4 I/O FIFO Data Bus Bit 4* 3 DB2 I/O FIFO Data Bus Bit 2* 4 VIO PWR +1.8V to +5.25V supply to the FIFO Interface and Control group pins (1...3, 5, 6, 9...14, 22, 23). In USB bus powered designs connect to 3V3OUT to drive out at 3.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 Pin No. Name Type Description 22 TXE# I/O When high, do not write data into the FIFO. When low, data can be written into the FIFO by strobing WR high, then low. During reset this signal pin is tri-state, but pulled up to VCCIO via an internal 200kΩ resistor. See Section 4.4 for timing diagram. 23 RXF# I/O When high, do not read data from the FIFO.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 4.4 FT245 FIFO Control Interface Read Cycle Timing Diagrams Figure 4.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 4.5 FT245 FIFO Control Interface Write Cycle Timing Diagrams Figure 4.3 FIFO Write Cycle Time Description Min Max Unit T7 WR Active Pulse Width 50 ns T8 WR to RD Pre-Charge Time 50 ns T9 Data Setup Time before WR Inactive 20 ns T10 Data Hold Time from RD Inactive 0 T11 WR Inactive to TXE# 0 T12 TXE# Inactive After WR Cycle 80 ns 25 ns ns Table 4.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 5 Module Dimensions Figure 5.1 UM245R Module Dimensions All dimensions are shown in millimeters with inches shown in parenthesis. The FT245RL IC device used by the UM245R is supplied in a RoHS compliant 28 pin SSOP package. The package is lead (Pb) free and uses a „green‟ compound. The date code format is YYXX where XX = 2 digit week number, YY = 2 digit year number.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 6 FT245RL 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 device.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 Parameter Description Minimum Typical Maximum Units Conditions Voh Output Voltage High 3.2 4.1 4.9 V I source = 2mA Vol Output Voltage Low 0.3 0.4 0.6 V I sink = 2mA 1.3 1.6 1.9 V ** 50 55 60 mV ** Vin VHys Input Switching Threshold Input Switching Hysteresis Table 6.3 FIFO Interface and Control Bus Pin Characteristics (VCCIO = 5.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 Parameter Description Minimum Typical Maximum Units Conditions Voh Output Voltage High 3.2 4.1 4.9 V I source = 6mA Vol Output Voltage Low 0.3 0.4 0.6 V I sink = 6mA 1.3 1.6 1.9 V ** 50 55 60 mV ** Vin VHys Input Switching Threshold Input Switching Hysteresis Table 6.6 FIFO Interface and Control Bus Pin Characteristics (VCCIO = 5.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 Parameter UVoh UVol UVse UCom UVDif UDrvZ Description Minimum Typical Maximu m Units Conditions RI = 1.5kΩ to 3V3Out I/O Pins Static Output 2.8 (High) --- 3.6 V (D+) RI = 15KΩ to GND (D-) RI = 1.5kΩ to 3V3Out I/O Pins Static Output 0 (Low) --- 0.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 6.4 Internal Clock Characteristics The internal Clock Oscillator has the following characteristics: Value Parameter Unit Minimum Typical Maximum Frequency of Operation 11.98 12.00 12.02 MHz Clock Period 83.19 83.33 83.47 ns 45 50 55 % Duty Cycle Table 6.12 Internal Clock Characteristics NOTE: Use of the internal clock requires VCC to be in the range of 4.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 7 Module Configurations 7.1 BUS Powered Configuration Figure 7.1 Bus Powered Configuration Figure 7.1 illustrates the UM245R in a typical USB bus powered design configuration. This can easily be done by fitting the jumper link on J2, as shown above. The UM245R is supplied in this configuration by default. A USB Bus Powered device gets its power from the USB bus.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 7.2 Self Powered Configuration Figure 7.2 Self-Powered Configuration Figure 7.2 illustrates the UM245R in a typical USB self powered configuration. In this case the link on jumper J2 is removed, and an external supply is connected to the module VCC pins. Figure 7.2 illustrate a design which has a 4.0V - 5V supply.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 7.3 USB Bus Powered with Power Switching Confiduration Figure 7.3 Bus Powered with Power Switching Configuration USB Bus powered circuits need to be able to power down in USB suspend mode in order to meet the <= 500μA (2.5mA with remote wake-up enabled) total USB suspend current requirement, including external logic.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 7.4 Bus Powered with 3.3V Logic Drive / IO Supply Voltage Figure 7.4 USB Bus Powered 3.3V Logic Drive Figure 7.4 shows a configuration where a jumper switch is used to allow the FT245R to be interfaced with a 3.3V or 5V logic devices. The FT245R‟s VCCIO pin is either supplied with 5V from the USB bus (connect together pins 2 and 3 on J1), or with 3.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 8 UM245R Module Circuit Schematic Figure 8.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 9 Internal EEPROM Configuration Following a power-on reset or a USB reset the FT245R will scan its internal EEPROM and read the USB configuration descriptors stored there. The default values programmed into the internal EEPROM in the FT245RL used on the UM245R are shown in Table 9.1.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 10 Contact Information Head Office – Glasgow, UK Future Technology Devices International Limited Unit 1, 2 Seaward Place, Centurion Business Park Glasgow G41 1HH United Kingdom Tel: +44 (0) 141 429 2777 Fax: +44 (0) 141 429 2758 E-mail (Sales) E-mail (Support) E-mail (General Enquiries) Web Site URL Web Shop URL sales1@ftdichip.com support1@ftdichip.com admin1@ftdichip.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 Appendix A – List of Tables and Figures List of Table Table 4.1 Module Pin-Out Description .......................................................................................................... 9 Table 4.2 Jumper J1 Pin Description ............................................................................................................ 9 Table 4.
Document Reference No.: FT_000202 UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04 Clearance No.: FTDI# 124 Appendix B – Revision History Version 0.9 Initial Datasheet Created December 2005 Version 1.00 Full Datasheet Release December 2005 Version 1.01 Circuit Schematic Diagram Update January 2006 Version 1.02 Module PCB Length Dimensions added January 2006 Version 1.03 Table 4.