FT245RQ R FTDI, Future Technology Devices International Ltd, FT245RQ R Datasheet - Page 11

• Manufacturer Part Number: FT245RQ R
• Description: IC USB TO PARALLEL FIFO 32-QFN
• Manufacturer: FTDI, Future Technology Devices International Ltd

Specifications of FT245RQ R

• Applications: USB
• Interface: USB
• Voltage - Supply: 1.8 V ~ 5.25 V
• Package / Case: 32-QFN
• Mounting Type: Surface Mount
• For Use With: 768-1020 - MODULE USB-PAR FIFO TTL 24-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 768-1012-2; FT245RQ R

Pin No.
1
4, 17,
20
16
19
24
Table 3.6 Power and Ground Group
Pin No.
5, 12,
13, 23,
25, 29
18
26
27
28
Table 3.7 Miscellaneous Signal Group
Pin
No.
30
31
32
2
3
Name
D0
D4
D2
D1
D7
Name
VCCIO
GND
3V3OUT
VCC
AGND
Name
NC
RESET#
TEST
OSCI
OSCO
Copyright © 2010 Future Technology Devices International Limited
Type
I/O
I/O
I/O
I/O
I/O
Type
PWR
PWR
Output
PWR
PWR
Type
NC
Input
Input
Input
Output
Description
FIFO Data Bus Bit 0
FIFO Data Bus Bit 4
FIFO Data Bus Bit 2
FIFO Data Bus Bit 1
FIFO Data Bus Bit 7
Description
+1.8V to +5.25V supply for the FIFO Interface group pins (2, 3, 6,7,8,9,10 11, 21,
22, 30,31,32). In USB bus powered designs connect this pin to 3V3OUT to drive out
at +3.3V levels, or connect to VCC to drive out at +5V CMOS level. This pin can also
be supplied with an external +1.8V to +2.8V supply in order to drive out at lower
levels. It should be noted that in this case this supply should originate from the
same source as the supply to VCC. This means that in bus powered designs a
regulator which is supplied by the +5V on the USB bus should be used.
Device ground supply pins.
+3.3V output from integrated LDO regulator. This pin should be decoupled to
ground using a 100nF capacitor. The purpose of this output is to provide the
internal +3.3V supply to the USB transceiver cell and the internal 1.5kΩ pull up
resistor on USBDP. Up to 50mA can be drawn from this pin to power external logic if
required. This pin can also be used to supply the VCCIO pin.
+3.3V to +5.25V supply to the device core. (see Note 1).
Device analogue ground supply for internal clock multiplier.
Description
No internal connection. Do not connect.
Active low reset. Can be used by an external device to reset the FT245R. If
not required can be left unconnected, or pulled up to VCC.
Puts the device into IC test mode. Must be tied to GND for normal
operation, otherwise the device will appear to fail.
Input 12MHz Oscillator Cell. Optional – Can be left unconnected for normal
operation. (see Note 2).
Output from 12MHZ Oscillator Cell. Optional – Can be left unconnected for
normal operation if internal Oscillator is used.
FT245R USB FIFO IC Datasheet Version 2.10
Document No.: FT_000052
Clearance No.: FTDI# 39
(see Note 2).
11