參數(shù)資料
型號(hào)： 81C17
廠商： SMSC Corporation
英文描述： TWENTY PIN UART (TPUART)
中文描述： 第二十七密碼器（UART TPUART）
文件頁數(shù)： 1/18頁
文件大?。?/td> 71K
代理商： 81C17
COM81C17
Twenty Pin UART (TPUART)
FEATURES
!
Single Chip UART With Baud Rate
Generator
Asynchronous Operation
-
16 Selectable Baud Rate Clock
Frequencies (Internal)
-
External 16x Clock (100 KBaud)
-
Character Length: 7 or 8 Bits
-
1 or 2 Stop Bit Selection
Small 20 Pin DIP (300 mil) or PLCC
Full or Half Duplex Operation
!
!
!
!
!
!
!
!
!
!
Double Buffering of Data
Programmable Interrupt Generation
Programmable Modem/Terminal Signals
Odd or Even Parity Generate and Detect
Parity, Overrun and Framing Error Detection
TTL Compatible Inputs and Outputs
High Speed Host Bus Operation (with no
wait state)
Low Power CMOS
Single +5V Power Supply
!
!
GENERAL DESCRIPTION
The COM81C17 TPUART is an asynchronous
only
receiver/transmitter
programmable baud rate generator housed in a
twenty pin package. The TPUART receives
serial data streams and converts them into
parallel data characters for the processor. While
receiving serial data, the TPUART will also
accept data characters from the processor in
parallel format and convert them into serial
with
a
built
in
format along with start, stop and optional parity
bus. The TPUART will signal the processor via
interrupt when it has completely transmitted or
received a character and requires service.
Complete status information is available to the
processor through the status register. The
TPUART features two general purpose control
pins that can be individually programmed to
perform
as
terminal
handshake signals.
or
modem
control
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