IMP16C552-CJ68 IMP Inc, IMP16C552-CJ68 Datasheet - Page 2

• Manufacturer Part Number: IMP16C552-CJ68
• Description: Dual Universal Asynchronous Receiver/Transmitter (UART) with 16-BYTE FIFO & Parallel Printer Port
• Manufacturer: IMP Inc

2
Description
General Description
The low power COMS IMP16C522 is a single
device
input/output ports simultaneously and one fully
bi-directional parallel port for the IBM PC ATM
PS/2 and compatible systems. The parallel
port is full compatible to the Centronics printer
port and IBM serial parallel Adapter. Each
Universal
transmitter (UART) is fully programmable.
Each UART in the IMP16C522 is capable of
buffering up to 16 bytes of data upon reception,
relieving the CPU of interrupt overhead.
Buffering of data also allows greater latency
time in interrupt servicing which is vital
in a multitasking environment, DMA signaling
between the internal FIFO buffers and host
CPU allows single or multiple character
transfers.
recommended data rate of 256k with a clock
frequency of 80MHZ
The IMP16C552 is an enhanced dual channel
version
solution
of
Asynchronous
Each UART has a maximum
the
for
IMP16C550A
serving
Receiver
two
408-432-9100/www.impweb.com
Universal
serial
and
Asynchronous
(UART) plus a bi-directional parallel data port
which fully support a Centronics compatible
printer interface
The
Asynchronous Receiver/Transmitter interface
simultaneously
system. Each UART performs parallel-to-serial
conversion on the output and serial-to parallel
conversion on the input. Two modes of
operation exits for each I/0 channel after
a hardware reset. Each UART is functionally
compatible
mode)and
mode)which is only available on the IMP16C552
It can be activated through software relieving
the CPU of excessive overhead due to due to
interrupts. The complete status of each UART
can be read at any time from internal
registers. The parallel port allows information
received from the data base to be printed. The
parallel port together with the two serial ports,
provides IBM PC ATM and PS/2tm compatible
with a single device solution.
two
an
serial
to
IMP16C552
IMP16C552
Receiver
in
the
alternate
input/output
microprocessor-based
IMP16C450(character
and
mode
Transmitter
Universal
(FIFO
© 2002 IMP, Inc.