DS_FT2232D Datasheet, PDF (9/61 Pages) List of Unclassifed Manufacturers – Future Technology Devices International Ltd

Document No.: FT_000173
FT2232D DUAL USB TO SERIAL UART/FIFO IC Datasheet
Version 2.05
Clearance No.: FTDI# 127
Pin No. Name
Type
Description
6
3, 42
14
31
9,18,
25, 34
46
45
3V3OUT
VCC
VCCIOA
VCCIOB
GND
AVCC
AGND
OUTPUT
PWR
PWR
PWR
PWR
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. It‟s prime purpose is to provide the internal 3.3V supply
to the USB transceiver cell and the RSTOUT# pin. A small amount of
current (<= 5mA) can be drawn from this pin to power external 3.3V
logic if required.
+4.35 volt to +5.25 volt VCC to the device core, LDO and non-UART /
FIFO controller interface pins.
+3.0 volt to +5.25 volt VCC to the UART / FIFO A Channel interface pins
10..13, 15..17 and 19..24. When interfacing with 3.3V external logic in a
bus powered design connect VCCIO to a 3.3V supply generated from the
USB bus. When interfacing with 3.3V external logic in a self powered
design connect VCCIO to the 3.3V supply of the external logic.
Otherwise connect to VCC to drive out at 5V CMOS level.
+3.0 volt to +5.25 volt VCC to the UART / FIFO B Channel interface pins
26..30, 32..33 and 35..40. When interfacing with 3.3V external logic in a
bus powered design connect VCCIO to a 3.3V supply generated from the
USB bus. When interfacing with 3.3V external logic in a self powered
design connect VCCIO to the 3.3V supply of the external logic.
Otherwise connect to VCC to drive out at 5V CMOS level.
Device - Ground Supply Pins
PWR
PWR
Device - Analog Power Supply for the internal x8 clock multiplier. A low
pass filter consisting of a 470 Ohm series resistor and a 100 nF to GND
should be used on the supply to this pin.
Device - Analog Ground Supply for the internal x8 clock multiplier
Table 3.4.4 Power and Ground Group
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