Document No.: FT_000288
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 1.82
Clearance No.: FTDI #199
3.3 Signal Description
The operation of the following FT232H pins are the same regardless of the configured mode:-
Pin No.
Name
Type
Description
**
POWER
input
40
+5.0V or 3V3 power supply input.
VREGIN
POWER
output
+1.8V output. Should not be used. Terminate with 0.1uF
capacitor to GND
37
38
VCCA
POWER
output
+1.8V output. Should not be used. Terminate with a 0.1uF
capacitor to GND
VCORE
POWER
**
39
+3.3V output or input.
output or
input
VCCD
POWER
input
12, 24, 46
8
VCCIO
VPLL
+3.3V input. I/O interface power supply input
+3.3V input. Internal PLL power supply input. It is
recommended that this supply is filtered using an LC filter.
(See figure 6.1)
POWER
Input
+3.3V input. Internal USB PHY power supply input. Note that
this cannot be connected directly to the USB supply. A +3.3V
regulator must be used. It is recommended that this supply is
filtered using an LC filter.(See figure 6.1)
POWER
Input
3
VPHY
POWER
Input
4,9,41
AGND
GND
0V Ground input.
0V Ground input.
POWER
Input
10,11,22,23,35,36,47,48
Table 3.1 Power and Ground
** If pin 40 (VREGIN) is +5.0V, pin 39 becomes an output and If pin 40 (VREGIN) is 3V3 pin 39 becomes
an input.
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