F81232
F81232
USB to UART Chip
Release Date: August, 2008
Version: V0.10P
F81232
.
Aug., 2008
V0.10P
F81232
F81232 Datasheet Revision History
Version
V0.10P
Date
2008/8/25
Page
-
Revision History
Preliminary Version
Please note that all data and specifications are subject to change without notice. All the trade marks of products
and companies mentioned in this data sheet belong to their respective owners.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Fintek for any damages resulting from
such improper use or sales.
F81232
.
Aug., 2008
V0.10P
F81232
Table of Content
1. General Description.................................................................................................................................1
2. Feature List..............................................................................................................................................1
3. Pin Configuration ....................................................................................................................................2
4. Pin Description........................................................................................................................................2
6. Electrical Characteristics Request ...........................................................................................................8
7. Ordering Information ............................................................................................................................10
8. Package Dimensions .............................................................................................................................11
9. Application Circuit. ...............................................................................................................................12
F81232
.
Aug., 2008
V0.10P
F81232
1. General Description
The F81232 is a highly-integrated USB to UART bridge controller providing a simple
solution for updating RS-232 design to USB using a minimum of components. A programmable
generator is provided to select baud rate from 1200 to 115.2kbps.
In USB interface function, The F81232 communications with host by full-speed USB
interface (12Mb/s). It supports 4 suits endpoint, one control endpoint( endpoint zero) is for bus
enumeration, one output endpoint is for UART transmit data and two input endpoint is transmit
UART data and status to host.
In I2C interface function, The F81232 builds 256 bytes SRAM to save from I2C flash/ROM
information for USB bus enumeration. The I2C flash/ROM contains IdVendor/ IdProduct/
BcdDevice/ Manufacturer string / IProduct string / iSerialNumber string information.
In power function, The F81232 supports remote-wakeup function for USB interface, when
PC system into S3 state. The F81232 receive UART data to asserted USB interface to wakeup
PC system.
2. Feature List
Full compliance with the USB specification Rev 1.1.
Support RS-232 serial interface.
Install as a standard COM port.
Support baud rate from 1200 to 115.2kbps.
Support remote-wakeup and power management
Single chip USB to serial communication.
Power by 3.3V and package in 16SSOP.
F81232.
Aug., 2008
V0.10P
F81232
3. Pin Configuration
4. Pin Description
OD
12_5v
- Open-drain output pin with 12 mA sink 5v tolerance capability.
IOD
12st_5v
- TTL level bi-directional pin with schmitt trigger and with 12 mA sink 5v tolerance capability.
O
12
IN
st_5v
IN
t
AIO
AIO
1.5k
P
- output pin with 12 mA driving/sink capability.
- TTL level input pin with schmitt trigger 5v tolerance.
- TTL level input pin.
- USB PAD compatible USB 1.1 spec( internal resistor 28ohm~44ohm)
- USB PAD compatible USB 1.1 spec( internal resistor 28ohm~44ohm),and internal pull high 1.5kohm
- Power.
F81232.
Aug., 2008
V0.10P
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