Document No.: FT_000288
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 1.82
Clearance No.: FTDI #199
Pin No.
Name
OSCI
OSCO
REF
Type
INPUT
OUTPUT
INPUT
I/O
Description
Oscillator input.
Oscillator output.
1
2
Current reference – connect via a 12KΩ resistor @ 1% to GND.
USB Data Signal Minus.
5
DM
6
DP
I/O
USB Data Signal Plus.
7
TEST
RESET#
INPUT
INPUT
IC test pin – for normal operation must be connected to GND.
Reset input (active low).
42
34
USB Power Save input. This is an EEPROM configurable option which
is set using a ’Suspend on ACBus7 Low’ bit in FT_PROG . This option
is available when the FT232H is on a self powered mode and is used
to prevent forcing current down the USB lines when the host or hub
is powered off.
PWRSAV# = 1 : Normal Operation
PWRSAV#
INPUT
31
PWRSAV# = 0 : FT232H forced into SUSPEND mode.
PWRSAV# can be connected to VBUS of the USB connector (via a
39KΩ resistor). When this input goes high, then it indicates to the
FT232H that it is connected to a host PC. When the host or hub is
powered down then the FT232H is held in SUSPEND mode.
Table 3.2 Common Function pins
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