FT245BL/TR FTDI, FT245BL/TR Datasheet - Page 8

• Manufacturer Part Number: FT245BL/TR
• Description: IC, USB FIFO INTERFACE, 480MBPS, LQFP-32
• Manufacturer: FTDI

Specifications of FT245BL/TR

• Usb Type: FIFO
• Usb Version: 1.1, 2.0
• Data Rate: 480Mbps
• No. Of Ports: 2
• Supply Voltage Range: 4.35V To 5.25V
• Operating Temperature Range: 0°C To +70°C
• Digital Ic Case Style: LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.1
Table 1 - FT245BL - PINOUT DESCRIPTION
FIFO DATA BUS GROUP (*** Note 1)
FIFO CONTROL INTERFACE GROUP
USB INTERFACE GROUP
EEPROM INTERFACE GROUP
Pin#
25
24
23
22
21
20
19
18
Pin#
16
15
14
12
Pin#
7
8
Pin#
32
1
2
DS245BL Version 1.6
Signal Descriptions
Signal
DO
D1
D2
D3
D4
D5
D6
D7
Signal
RD#
WR
TXE#
RXF#
Signal
USBDP
USBDM
Signal
EECS
EESK
EEDATA
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Type
IN
IN
OUT
OUT
Type
I/O
I/O
Type
I/O
OUT
I/O
© Future Technology Devices Intl. Ltd. 2005
Description
FIFO Data Bus Bit 0
FIFO Data Bus Bit 1
FIFO Data Bus Bit 2
FIFO Data Bus Bit 3
FIFO Data Bus Bit 4
FIFO Data Bus Bit 5
FIFO Data Bus Bit 6
FIFO Data Bus Bit 7
Description
Enables Current FIFO Data Byte on D0..D7 when low. Fetches the next FIFO
Data Byte (if available) from the Receive FIFO Buffer when RD# goes from low
to high.
Writes the Data Byte on the D0..D7 into the Transmit FIFO Buffer when WR goes
from high to low.
When high, do not write data into the FIFO. When low, data can be written into
the FIFO by strobing WR high then low.
When high, do not read data from the FIFO. When low, there is data available in
the FIFO which can be read by strobing RD# low then high again
Description
USB Data Signal Plus (Requires 1.5K pull-up to 3V3OUT or RSTOUT#)
USB Data Signal Minus
Description
EEPROM – Chip Select. For 48MHz operation pull EECS to GND using a 10K
resistor. 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 2.2K resistor. Also pull Data-Out of the EEPROM to
VCC via a 10K resistor for correct operation.
*** Note 1
*** Note 1
FT245BL USB FIFO ( USB - Parallel ) I.C.
*** Note 2
*** Note 3
*** Note 3
*** Note 3
Page 8 of 24
*** Note 2