参数资料
| 型号： | ST16C452CJ68-F |
| 厂商： | Exar Corporation |
| 文件页数： | 29/30页 |
| 文件大小： | 0K |
| 描述： | IC UART W/PAR PORT DUAL 68PLCC |
| 标准包装： | 19 |
| 特点： | * |
| 通道数： | 2，DUART |
| FIFO's： | 1 字节 |
| 规程： | 打印机 |
| 电源电压： | 2.97 V ~ 5.5 V |
| 带并行端口： | 是 |
| 带故障启动位检测功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 带CMOS： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 68-LCC（J 形引线） |
| 供应商设备封装： | 68-PLCC |
| 包装： | 管件 |
| 其它名称： | ST16C452CJ68-F-ND |
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8
ST16C452/452PS
Rev. 3.20
GENERAL DESCRIPTION
The 452/452PS provides serial asynchronous receive
data synchronization, parallel-to-serial and serial-to-
parallel data conversions for both the transmitter and
receiver sections. These functions are necessary for
converting the serial data stream into parallel data that
is required with digital data systems. Synchronization
for the serial data stream is accomplished by adding
start and stops bits to the transmit data to form a data
character (character orientated protocol). Data integ-
rity is insured by attaching a parity bit to the data
character. The parity bit is checked by the receiver for
any transmission bit errors. The electronic circuitry to
provide all these functions is fairly complex especially
when manufactured on a single integrated silicon
chip. The 452/452PS represents such an integration
with greatly enhanced features. The 452/452PS is
fabricated with an advanced CMOS process.
The 452/452PS combines the package functions of a
dual UART and a printer interface on a single inte-
grated chip. The 452/452PS UART is indented to be
software compatible with the ST16C450, and
NS16C450 while the bi-directional printer interface
mode is intended to operate with a CENTRONICS
type parallel printer. However, the printer interface is
designed such that it may be configured to operate
with other parallel printer interfaces or used as a
general purpose parallel interface. The 452 is avail-
able in two versions, the ST16C452 and the
ST16C452PS. The ST16C452 provides single hard-
ware pin to control the printer port data direction while
the 452PS provides an additionally software control
bit to control the printer port data direction to become
compatible PS/2 operating system.
The 452/452PS 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.
FUNCTIONAL DESCRIPTIONS
Functional Modes
Two functional user modes are selectable for the 452/
452PS 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 452/452PS 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 452/452PS 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 452/452PS provides 11 internal registers for
monitoring 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), 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 regis-
ter (SR), I/O select register (IOSEL), and a command
and control register (COM/CON). Register functions
are more fully described in the following paragraphs.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST16C452CJ68PS | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| ST16C452CJ68PS-F | 功能描述:UART 接口集成电路 DUAL UART W/PARALEL PRINTER PORT RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| ST16C452CJ68TR-F | 功能描述:UART 接口集成电路 DUAL UART W/PARALEL PRINTER PORT RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| ST16C452IJ68 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| ST16C452IJ68-F | 功能描述:UART 接口集成电路 DUAL UART W/PARALEL PRINTER PORT RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
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