UM232H-B-NC FTDI, UM232H-B-NC Datasheet - Page 6
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UM232H-B-NC
Manufacturer Part Number
UM232H-B-NC
Description
Interface Development Tools USB to Serial/Paral. Break Out Board
Manufacturer
FTDI
Type
USB to Serial/Parallelr
Datasheet
1.UM232H-B-01.pdf
(14 pages)
Specifications of UM232H-B-NC
Rohs
yes
Product
Development Modules
Tool Is For Evaluation Of
FT232H
Interface Type
245 FIFO, FT1248, GPIO, I2C, SPI, UART, USB
Operating Supply Voltage
3.3 V
Dimensions
38.5 mm x 19.2 mm x 2 mm
Operating Supply Current
90 mA
For Use With
FT232H
ACBUS Signal
4.3
The following options can be configured on the CBUS I/O pins. These options are all configured in the
internal MTP ROM using the utility software FT_PROG, which can be downloaded from the
www.ftdichip.com. The default configuration is described in Section 8.
Table 4.3 – CBUS Signal Options
**When in USB suspend mode the outputs clocks are also suspended.
4.4
The UM232H-B contains an on-board EEPROM. This can be used to configure the functions of each CBUS
pin, the current drive on each signal pin, current limit for the USB bus and the other descriptors of the
device. For details on using the EEPROM programming utility FT_PROG, please see the FT_PROG User
Guide.
TX&RXLED#
*PWREN#
**CLK7.5
I/O mode
**CLK30
**CLK15
Option
RXLED#
TriSt-PU
DRIVE 1
DRIVE 0
TXLED#
SLEEP#
TXDEN
CBUS Signal Options
Configuring the EEPROM
ACBUS0, ACBUS1, ACBUS2, ACBUS3,
ACBUS4, ACBUS5, ACBUS6, ACBUS8,
ACBUS0, ACBUS1, ACBUS2, ACBUS3,
ACBUS4, ACBUS5, ACBUS6, ACBUS8,
ACBUS0, ACBUS1, ACBUS2, ACBUS3,
ACBUS4, ACBUS5, ACBUS6, ACBUS8,
ACBUS0, ACBUS1, ACBUS2, ACBUS3,
ACBUS4, ACBUS5, ACBUS6, ACBUS8,
ACBUS0, ACBUS1, ACBUS2, ACBUS3,
ACBUS4, ACBUS5, ACBUS6, ACBUS8,
ACBUS0, ACBUS1, ACBUS2, ACBUS3,
ACBUS4, ACBUS5, ACBUS6, ACBUS8,
ACBUS0, ACBUS1, ACBUS2, ACBUS3,
ACBUS4, ACBUS5, ACBUS6, ACBUS8,
ACBUS0, ACBUS1, ACBUS2, ACBUS3,
ACBUS4, ACBUS5, ACBUS6, ACBUS8,
ACBUS0, ACBUS5, ACBUS6,ACBUS8,
ACBUS0, ACBUS5, ACBUS6,ACBUS8,
ACBUS0, ACBUS5, ACBUS6,ACBUS8,
ACBUS0, ACBUS5, ACBUS6,ACBUS8,
ACBUS5, ACBUS6,ACBUS8, ACBUS9
Available On ACBUS Pin
ACBUS9
ACBUS9
ACBUS9
ACBUS9
ACBUS9
ACBUS9
ACBUS9
ACBUS9
ACBUS9
ACBUS9
ACBUS9
ACBUS9
Copyright © 2012 Future Technology Devices International Limited
Document Reference No.: FT_000721
TXDEN = (TTL level). Used with RS485 level converters to
enable the line driver during data transmit. TXDEN is
active from one-bit time before the start bit is transmitted
on TXD until one bit time after the last stop bit.
Output is low after the device has been configured by
USB, then high during USB suspend mode. This output can
be used to control power to external logic P-Channel logic
level MOSFET switch. Enable the interface pull-down
option when using the PWREN# in this way.*
TXLED = Transmit signalling output. Pulses low when
transmitting data (TXD) to the external device. This can
be connected to an LED.
RXLED = Receive signalling output. Pulses low when
receiving data (RXD) from the external device. This can be
connected to an LED.
LED drive – pulses low when transmitting or receiving data
from or to the external device. For more details, refer to
the FT232H datasheet on the
Goes low during USB suspend mode. Typically used to
power down an external TTL to RS232 level converter IC
in USB to RS232 converter designs.
30MHz Clock output.
15MHz Clock output.
7.5MHz Clock output.
Input Pull Up
Output High
Output Low
ACBUS BitBang
Description
UM232H-B Datasheet
FTDI
Clearance No.: FTDI#
website.
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Version 1.0
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