參數(shù)資料
型號(hào)： ST16C552A
廠商： Exar Corporation
英文描述： Dual UART with 16-Byte FIFO and Parallel Printer Port(雙通用異步接收器/發(fā)送器（帶16字節(jié)的先進(jìn)先出和并行打印機(jī)端口）)
中文描述： 雙UART），16字節(jié)FIFO和并行打印機(jī)端口（雙通用異步接收器/發(fā)送器（帶16字節(jié)的先進(jìn)先出和并行打印機(jī)端口）
文件頁(yè)數(shù)： 9/40頁(yè)
文件大?。?/td> 463K
代理商： ST16C552A
9
ST16C552/552A
Rev. 3.30
The 552/552A is capable of operation to 1.5Mbps with
a 24 MHz external clock input. With an external clock
input of 1.8432 MHz the user can select data rates up
to 115.2 Kbps.
The rich feature set of the 552/552A is available
through internal registers. Selectable receive FIFO
trigger levels, selectable TX and RX baud rates,
modem interface controls, and a power-down mode
are all standard features. Following a power on reset
or an external reset, the 552/552A is software compat-
ible with the previous generation, 16C452.
FUNCTIONAL DESCRIPTIONS
Functional Modes
Two functional user modes are selectable for the 552/
552A package. The first of these provides the dual
UART functions, while the other provides the func-
tions of a parallel printer interface. These features are
available through selection at the package interface
select pins.
UART A-B Functions
The UART mode provides the user with the capability
to transfer information between an external CPU and
the 552/552A package. A logic 0 on chip select pins -
CSA or -CSB allows the user to configure, send data,
and/or receive data via the UART channels A-B.
Printer Port Functions
The Printer mode provides the user with the capability
to transfer information between an external CPU and
the 552/552A parallel printer port. A logic 0 on chip
select pin -CSP allows the user to configure, send
data, and/or receive data via the bi-directional parallel
8-bit data bus, PD0-PD7.
Internal Registers
The 552/552A provides 12 internal registers for moni-
toring and control of the UART functions and another
6 registers for monitoring and controlling the printer
port. These resisters are shown in Table 4 below. The
UART registers function as data holding registers
(THR/RHR), interrupt status and control registers
(IER/ISR), a FIFO control register (FCR), line status
and control registers (LCR/LSR), modem status and
control registers (MCR/MSR), programmable data
rate (clock) control registers (DLL/DLM), and a user
assessable scratchpad register (SPR). The printer
port registers functions data holding registers (PR), I/
O status register (SR), I/O select register (IOSEL), and
a command and control register (COM/CON). Regis-
ter functions are more fully described in the following
paragraphs.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST16C552ACJ68 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:
ST16C552ACJ68-F 功能描述:UART 接口集成電路 DUAL UART W/16BYTE FIFO&PARALELPRNTPORT RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
ST16C552ACJ68TR-F 功能描述:UART 接口集成電路 DUAL UART W/16BYTE FIFO&PARALELPRNTPORT RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
ST16C552AIJ68 制造商:EXAR 制造商全稱:EXAR 功能描述:DUAL UART WITH 16-BYTE FIFO AND PARALLEL PRINTER PORT
ST16C552AIJ68-F 功能描述:UART 接口集成電路 DUAL UART W/16BYTE FIFO&PARALELPRNTPORT RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
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