ft232hq Future Technology Devices International Ltd., ft232hq Datasheet - Page 8

• Manufacturer Part Number: ft232hq
• Description: Ft232h Single Channel Hi- Speed Usb To Multipurpose Uart/fifo Ic
• Manufacturer: Future Technology Devices International Ltd.

3.2 FT232H Pin Descriptions
This section describes the operation of the FT232H pins. Both the LQFP and the QFN packages have the
same function on each pin. The function of many pins is determined by the configuration of the FT232H.
The following table details the function of each pin dependent on the configuration of the interface. Each
of the functions is described in the following table (Note: The convention used throughout this document
for active low signals is the signal name followed by #).
Pins marked * are EEPROM selectable
Pins marked ** default to tri-stated inputs with an internal 75KΩ (approx) pull up resistor to VCCIO.
Pin
13
14
15
16
17
18
19
20
21
25
26
27
28
29
30
31
32
33
#
Pin
ADBUS0
ADBUS1
ADBUS2
ADBUS3
ADBUS4
ADBUS5
ADBUS6
ADBUS7
ACBUS0
ACBUS1
ACBUS2
ACBUS3
ACBUS4
ACBUS5
ACBUS6
ACBUS7
ACBUS8
ACBUS9
Name
Pin
(RS232)
ACBUS1
ACBUS2
RXLED#
ACBUS5
ACBUS6
USBVCC
ACBUS8
ACBUS9
TXLED#
ASYNC
TXDEN
DSR#
DCD#
Serial
RTS#
CTS#
DTR#
RXD
TXD
RI#
**
**
**
**
**
**
*
*
*
Copyright © 2011 Future Technology Devices International Limited
ACBUS8
ACBUS9
CLKOUT
SIWU#
USBVC
SYNC
RXF#
TXE#
FIFO
RD#
OE#
245
WR
D0
D1
D2
D3
D4
D5
D6
D7
**
**
C
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
245 FIFO
ACBUS5
ACBUS6
USBVCC
ACBUS8
ACBUS9
SIWU#
ASYNC
STYLE
RXF#
TXE#
RD#
WR
D0
D1
D2
D3
D4
D5
D6
D7
**
**
Pin functions (depends on configuration)
WRSTB
SIWU#
ACBUS
RDSTB
ACBUS
ACBUS
ACBUS
USBVC
ACBUS
ACBUS
ASYNC
bang
Bit-
D0
D1
D2
D3
D4
D5
D6
D7
**
**
**
#
#
FT232H
0
3
5
6
C
8
9
WRSTB
SIWU#
ACBUS
RDSTB
ACBUS
ACBUS
ACBUS
USBVC
ACBUS
ACBUS
SYNC
bang
Bit-
D0
D1
D2
D3
D4
D5
D6
D7
**
**
**
#
#
C
0
3
5
6
8
9
MPSSE
TDO/D
GPIOH
GPIOH
GPIOH
GPIOH
GPIOH
GPIOH
GPIOH
GPIOH
ACBUS
ACBUS
TMS/C
TCK/S
GPIOL
GPIOL
GPIOL
GPIOL
TDI/D
**
**
O
K
S
0
1
2
3
0
1
2
3
4
5
6
7
8
9
I
Fast Serial
TriSt-UP
TriSt-UP
TriSt-UP
TriSt-UP
USBVCC
interface
ACBUS0
ACBUS1
ACBUS2
ACBUS3
ACBUS5
ACBUS6
ACBUS8
ACBUS9
SIWU#
FSCLK
FSCTS
FSDO
FSDI
**
**
**
**
**
**
**
**
**
**
**
**
Document No.: FT_000288
Clearance No.: FTDI #199
CPU Style
Datasheet Version 1.0
ACBUS5
ACBUS6
USBVCC
ACBUS8
ACBUS9
SIWU#
CS#
RD#
FIFO
WR
D0
D1
D2
D3
D4
D5
D6
D7
A0
**
**
**
**
ACBUS3
ACBUS4
ACBUS5
ACBUS6
USBVCC
ACBUS8
ACBUS9
FT1248
MIOSI0
MIOSI1
MIOSI2
MIOSI3
MIOSI4
MIOSI5
MIOSI6
MIOSI7
SS_N
MISO
SCLK
8