FT245BL-REEL FTDI, Future Technology Devices International Ltd, FT245BL-REEL Datasheet
FT245BL-REEL
Specifications of FT245BL-REEL
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FT245BL-REEL Summary of contents
Page 1
... The FT245BL is the lead free version of the 2 adds extra functionality to its FT8U245AM predecessor and reduces external component count, but also maintains a high degree of pin compatibility with the original, making it easy to upgrade or cost reduce existing designs as well as increasing the potential for using the device in new application areas. ...
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... General Description The FT245BL provides an easy cost-effective method of transferring data to / from a peripheral and a host P. Million bits (1 Megabyte) per second. Its simple, FIFO-like design makes it easy to interface to any microcontroller or microprocessor via IO ports. To send data from the peripheral to the host computer, simply write the byte-wide data into the module when TXE# is low. If the (384-byte) transmit buffer fi ...
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... Programmable FIFO TX Buffer Timeout In the previous device, the TX buffer timeout used to flush remaining data from the TX buffer DS245BL Version 1.7 FT245BL USB FIFO ( USB - Parallel ) I.C. • • Bit Bang Mode © Future Technology Devices Intl. Ltd. 2005 was fixed at 16ms timeout. This timeout is now ...
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... USB 2.0 device descriptor as opposed to USB 1.1. Note : The device would be a USB 2.0 Full Speed device (12Mb/s) as opposed to a USB 2.0 High Speed device (480Mb/s). DS245BL Version 1.7 FT245BL USB FIFO ( USB - Parallel ) I.C. • Multiple Device Support without EEPROM party rd • ...
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... The output drivers provide 3.3 volt level slew rate control signalling, whilst a differential receiver and two single ended receivers provide USB data in, SEO and USB Reset condition detection. DS245BL Version 1.7 FT245BL USB FIFO ( USB - Parallel ) I.C. Send Immediate / WakeUP PWREN# FIFO Receive Buffer ...
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... If no EEPROM is connected (or the EEPROM is blank), the FT245BL will use its built-in default VID, PID Product Description and Power Descriptor Value. In this case, the device will not have a serial number as part of the USB descriptor. ...
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... Device Pin-Out Figure 1 Pin-Out (Lead free LQFP-32 Package ) 32 EESK 1 FTDI EEDATA VCC RESET# FT245BL RSTO# 3V3OUT XXYY USBDP USBDM 8 9 DS245BL Version 1.7 FT245BL USB FIFO ( USB - Parallel ) I. GND 16 © Future Technology Devices Intl. Ltd. 2005 Figure 2 Pin-Out (Schematic Symbol ) ...
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... For 6MHz operation no resistor is required. Clock signal to EEPROM. Adding a 10K pull down resistor onto EESK will cause the FT245BL to use USB Product ID 6005 (hex) instead of 6001 (hex). All of the other USB device descriptors are unchanged. EEPROM – Data I/O Connect directly to Data-In of the EEPROM and to Data- Out of the EEPROM via a 2 ...
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... This can be used to optimise USB transfer speed for some applications. Tie this pin to VCCIO if not used. Description Can be used by an external device to reset the FT245BL. If not required, tie to VCC. Output of the internal Reset Generator. Stays high impedance for ~ 5ms after VCC > ...
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... Note 3: During device reset, these pins are tri-state but pulled up to VCC via internal 200K resistors. DS245BL Version 1.7 FT245BL USB FIFO ( USB - Parallel ) I.C. Description 3.3 volt Output from the integrated L.D.O. regulator This pin should be decoupled to GND using a 33nF ceramic capacitor in close proximity to the device pin. Its prime purpose is to provide the internal 3.3V supply to the USB transceiver cell and the RSTOUT# pin. A small amount of current (< ...
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... Data Hold Time from WR inactive T11 WR Inactive to TXE# T12 TXE inactive after WR cycle DS245BL Version 1 valid data Min *** Note 4 20 *** Note Min © Future Technology Devices Intl. Ltd. 2005 FT245BL USB FIFO ( USB - Parallel ) I. Max Unit T12 T11 T8 T10 valid data Max Unit ...
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... Min 0.15 Max The FT245BL is supplied pin lead free LQFP package as standard. This package has a 7mm x 7mm body ( 9mm x 9mm including leads ) with leads on a 0.8mm pitch. The above drawing shows the LQFP-32 package – all dimensions are in millimetres. Note that there are two date code formats used - XXYY = Date Code where digit year number digit week number) ...
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... Absolute Maximum Ratings These are the absolute maximum ratings for the FT245BL device i Exceeding these may cause permanent damage to the device. (IEC 60134). Parameter Storage Temperature Floor Life (Out of Bag) at Factory Ambient (30 C/60% Relative Humidity) o Ambient Temperature (Power Applied) M.T.B.F. (at 35 ...
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... Differential Common Mode Differential Input Sensitivity UVDif Driver Output Impedance UDrvZ Note 9 – Driver Output Impedance includes the external 27R series resistors on USBDP and USBDM pins. DS245BL Version 1.7 FT245BL USB FIFO ( USB - Parallel ) I.C. Min Typ 2.2 2.7 0.3 0.4 1.0 1 ...
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... Figure 4 illustrates how to use the FT245BL with a 3-Pin Ceramic Resonator. A suitable part would be a ceramic resonator from Murata’s CERALOCK range. (Murata Part Number CSTCR6M00G15), or equivalent. 3-Pin ceramic resonators have the load capacitors built into the resonator so no external loading capacitors are required. This makes for an economical confi ...
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... It is possible to “share” the EEPROM between the FT245BL and another external device such as an MCU. However, this can only be done when the FT245BL is in its reset condition as it tri-states its EEPROM interface at that time. A typical configuration would use four bits of an MCU IO Port. One bit would be used to hold the FT245BL reset (using RESET#) on power-up, the other three would connect to the EECS, EESK and EEDATA pins of the FT245BL in order to read / write data to the EEPROM at this time ...
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... Ferrite Beads is available from Steward (www.steward.com) for example Steward Part # MI0805K400R-00 also available as DigiKey Part # 240-1035-1. DS245BL Version 1.7 Ferrite Bead VCC 27R FT245BM 27R 33nF 1k5 VCC 10uF © Future Technology Devices Intl. Ltd. 2005 FT245BL USB FIFO ( USB - Parallel ) I.C. 470R ...
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... To meet requirement a) the 1.5K pull-up resistor on USBDP is connected to RSTOUT# as per the bus-power circuit. However, the USB Bus Power is used to control the RESET# Pin of the FT245BL device. When the USB Host or Hub is powered up RSTOUT# will pull the 1.5K resistor on USB DP to 3.3V, thus identifying the device as a full speed device to USB ...
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... VCCIO to the 3V3OUT pin of the FT245BL. Note : It should be emphasised that the 3.3V supply for VCCIO in a bus powered design with a 3.3V logic interface should come from an LDO which is supplied by USB bus, or from the 3V3OUT pin of the FT245BL, and not from any other source. ...
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... As with bus powered 3.3V interface designs, in some cases, where only a small amount of current is required (<5mA), it may be possible to use the in-built regulator of the FT245BL to supply the 3.3V without any other components being required. In this case, connect VCCIO to the 3v3OUT pin of the FT245BL. ...
Page 21
... MOSFET turns on. Without the soft start circuit there is a danger that the transient power surge of the MOSFET turning on will reset the FT245BL, or the USB host / hub controller. The values used here allow attached circuitry to power up with a slew rate of ~12.5 V per millisecond, in other words the output voltage will transition from GND approximately 400 microseconds. Alternatively, a dedicated power switch I.C. with inbuilt “ ...
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... IO Ports of the MCU, one port (8 bits) to transfer data and the other port ( bits) to monitor the TXE# and RXF# status bits and generate the RD# and WR strobes to the FT245BL as required. Optionally can be connected to another IO pin if this function is required. If the function is not required, tie this pin of the FT245BL to VCCIO. If the MCU is handling power management functions, then PWREN# should also be connected pin of the MCU ...
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... Section 1 - Win CE VCP drivers now available • Section 1 - D2XX drivers for Win CE and Linux now available • Section 5 FT245BL (lead free) and FT245BQ (lead free QFN package) now available DS245B Version 1.6 – Updated February 2005 • Section 1 - Driver OS availabillity updated • ...
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... At the time of writing our Sales Network covers over 40 different countries world-wide. Please visit the Sales Network page of our Web Site for the contact details our distributor(s) in your country. DS245BL Version 1.7 FT245BL USB FIFO ( USB - Parallel ) I.C. Future Technology Devices International Ltd. (USA) ...