参数资料
| 型号： | ST16C552IJ68TR-F |
| 厂商： | Exar Corporation |
| 文件页数： | 7/39页 |
| 文件大小： | 0K |
| 描述： | IC UART FIFO 16B DUAL 68PLCC |
| 标准包装： | 250 |
| 特点： | * |
| 通道数： | 2，DUART |
| FIFO's： | 16 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： | 带卷 (TR) |
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15
ST16C552/552A
Rev. 3.40
input and/or output functions. The signals have internal
pull-up resistors and can be wire-or’d. Normally, -
STROBE is used to strobe PD0-PD7 bus data into a
printer input buffer. -SLCTIN normally selects the printer
while AutoFDXT signals the printer to auto-linefeed.
Other signals provide similar printer functions but are
not bi-directional. The printer functions for these signals
are described in table 1, Symbol Description.
The interface provides a mode steering signal called
BIDEN. BIDEN controls the bi-directional 8-bit data bus
(PD0-PD7) direction, input or output. When BIDEN is a
logic 1 a single control bit (D5) in the control register
sets the input or output mode. Setting BIDEN to a logic
0 however sets an IBM interface compatible mode. In
this mode the bus direction (input/output) is set by eight
data bits in the IOSEL register. An AA (Hex) pattern
sets the input mode while a 55 (hex) pattern sets the
output mode. I/O direction is depicted in Table 6 below.
Printer Port
The 552/552A contains a general purpose 8-bit parallel
interface port that is designed to directly interface with
a CENTRONICS Printer. A number of the control/
interrupt signals and the 8-bit data bus have been
designed as bi-directional data buses. This allows the
interface to function with other device parallel data bus
applications. Signal -ACK is used to generate an -INTP
interface interrupt that would normally be connected to
the user CPU. -INTP can be made to follow the -ACK
signal, normal mode (see Figure 7) or it can be config-
ured for the latch mode. In the latch mode the interrupt
is not cleared until printer status register (SR) is read.
Another signal (INIT) can be made to function as an
outgoing or incoming interrupt, or combined with other
interrupts to provide a common wire-or interrupt output.
Interface signals -STROBE, -AutoFDXT, and -SLCTIN
are bi-directional and can be used as combinations of
Table 6, PD0-PD7 I/O DIRECTION MODE SELECTION
PORT DIRECTION
BIDEN
CONTROL REGISTER (D5)
I/O SELECT REGISTER
Input mode
0
X (Note 4)
AA Hex
Output mode
0
X (Note 4)
55 Hex
Output mode
1
0
X (Note 4)
Input mode
1
X (Note 4)
Note: 4 = don’t care
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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST16C554 | 制造商:EXAR 制造商全称:EXAR 功能描述:2.97V TO 5.5V QUAD UART WITH 16-BYTE FIFO |
| ST16C554CJ-0A-EVB | 功能描述:界面开发工具 Supports C554D 68 ld PLCC, ISA Interface RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| ST16C554CQ-0A-EVB | 功能描述:界面开发工具 Supports C554 64 ld TQFP, ISA Interface RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| ST16C554CQ64 | 制造商:EXAR 制造商全称:EXAR 功能描述:2.97V TO 5.5V QUAD UART WITH 16-BYTE FIFO |
| ST16C554CQ64-F | 功能描述:UART 接口集成电路 2.97V-5.5V 16B FIFO temp 0C to 70C; UART 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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