FIFO Obsolete See FT245RL
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Packaging : | Reel |
Parameter |
Value |
Units |
Storage Temperature |
65oC to + 150oC |
Degrees C |
Floor Life (Out of Bag) at Factory Ambient (30oC/60% Relative Humidity) |
192 Hours (Level 3 Compliant) **Note 5 |
|
Ambient Temperature (Power Applied) |
0oC to + 70oC |
Degrees C |
M.T.B.F. (at 35oC) |
247484 Hours 28 Years |
|
VCC Supply Voltage |
-0.5 to +6.00 |
V |
DC Input Voltage - Inputs |
-0.5 to +(VCC + 0.5) |
V |
DC Input Voltage - High Impedance Bidirectionals |
-0.5 to +(VCC + 0.5) |
V |
DC Output Current Outputs |
24 |
mA |
DC Output Current Low Impedance Bidirectionals |
24 |
mA |
Power Dissipation (VCC = 5.25V) |
500 |
mW |
Electrostatic Discharge Voltage (Human Body Model) (I < 1uA) |
+/- 3000 |
V |
Latch Up Current (Vi = +/- 10V maximum, for 10 ms) |
+/-200 |
mA |
The FT245BM provides an easy cost-effective method of transferring data to / from a peripheral and a host P.C. at up to 8 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 fills up or is busy storing the previously written byte, the FT245BM keeps TXE# high in order to stop further data from being written until some of the FIFO data has been transferred over USB to the host. TXE# goes high after every byte written.
When the host sends data to the peripheral over USB, the FT245BM will take RXF# low to let the peripheral know that at least one byte of data is available. The peripheral can read a data byte every time RXF# goes low. RXF# goes high after every byte read.
By using FTDI's virtual COM port drivers, the peripheral looks like a standard COM port to the application software. Commands to set the baud rate are ignored - the device always transfers data at its fastest rate regardless of the application's baud-rate setting. Alternatively, FTDI's D2XX drivers allow application software to access the FT245BM"directly" through a published DLL based API. Details of the current VCP and D2XX driver can be found on FTDI's web site ( http://www.ftdichip.com )