- 您现在的位置：买卖IC网 > PDF目录11813 > SC16C554IB64,128 (NXP Semiconductors)IC UART QUAD SOT314-2 PDF资料下载
参数资料
| 型号： | SC16C554IB64,128 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 8/55页 |
| 文件大小： | 0K |
| 描述： | IC UART QUAD SOT314-2 |
| 标准包装： | 1,500 |
| 通道数： | 4，QUART |
| FIFO's： | 16 字节 |
| 电源电压： | 2.5V，3.3V，5V |
| 带自动流量控制功能： | 是 |
| 带IrDA 编码器/解码器： | 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： | 64-LQFP |
| 供应商设备封装： | 64-LQFP（10x10） |
| 包装： | 带卷 (TR) |
| 其它名称： | 935270074128 SC16C554IB64-T SC16C554IB64-T-ND |
第1页第2页第3页第4页第5页第6页第7页当前第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页
Philips Semiconductors
SC16C554/554D
Quad UART with 16-byte FIFO and infrared (IrDA) encoder/decoder
Product data
Rev. 05 — 10 May 2004
16 of 55
9397 750 13132
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
6.6 Hardware ow control
When automatic hardware ow control is enabled, the SC16C554/554D monitors the
CTS pin for a remote buffer overow indication and controls the RTS pin for local
buffer overows. Automatic hardware ow control is selected by setting EFR[6] (RTS)
and EFR[7] (CTS) to a logic 1. If CTS transitions from a logic 0 to a logic 1 indicating
a ow control request, ISR[5] will be set to a logic 1 (if enabled via IER[6,7]), and the
SC16C554/554D will suspend TX transmissions as soon as the stop bit of the
character in process is shifted out. Transmission is resumed after the CTS input
returns to a logic 0, indicating more data may be sent.
With the Auto RTS function enabled, an interrupt is generated when the receive FIFO
reaches the programmed trigger level. The RTS pin will not be forced to a logic 1
(RTS off), until the receive FIFO reaches the next trigger level. However, the RTS pin
will return to a logic 0 after the data buffer (FIFO) is unloaded to the next trigger level
below the programmed trigger. However, under the above described conditions, the
SC16C554/554D will continue to accept data until the receive FIFO is full.
6.7 Software ow control
When software ow control is enabled, the SC16C554/554D compares one or two
sequential receive data characters with the programmed Xon/Xoff or Xoff1,2
character value(s). If received character(s) match the programmed values, the
SC16C554/554D will halt transmission (TX) as soon as the current character(s) has
completed transmission. When a match occurs, the receive ready (if enabled via Xoff
IER[5]) ags will be set and the interrupt output pin (if receive interrupt is enabled) will
be activated. Following a suspension due to a match of the Xoff characters’ values,
the SC16C554/554D will monitor the receive data stream for a match to the Xon1,2
character value(s). If a match is found, the SC16C554/554D will resume operation
and clear the ags (ISR[4]).
Reset initially sets the contents of the Xon/Xoff 8-bit ow control registers to a logic 0.
Following reset, the user can write any Xon/Xoff value desired for software ow
control. Different conditions can be set to detect Xon/Xoff characters and
suspend/resume transmissions. When double 8-bit Xon/Xoff characters are selected,
the SC16C554/554D compares two consecutive receive characters with two software
ow control 8-bit values (Xon1, Xon2, Xoff1, Xoff2) and controls TX transmissions
accordingly. Under the above described ow control mechanisms, ow control
characters are not placed (stacked) in the user accessible RX data buffer or FIFO.
In the event that the receive buffer is overlling and ow control needs to be executed,
the SC16C554/554D automatically sends an Xoff message (when enabled) via the
serial TX output to the remote modem. The SC16C554/554D sends the Xoff1,2
Table 6:
Flow control mechanism
Selected trigger level
(characters)
INT pin activation
Negate RTS or
send Xoff
Assert RTS or
send Xon
11
4
1
44
8
4
8
12
8
14
10
相关PDF资料 |
PDF描述 |
|---|---|
| SC16C554IB64,151 | IC UART QUAD SOT314-2 |
| AT89C51RB2-RLRUL | IC 8051 MCU 16K FLASH 44-VQFP |
| VI-B7N-IW-F2 | CONVERTER MOD DC/DC 18.5V 100W |
| VI-B7N-IW-F1 | CONVERTER MOD DC/DC 18.5V 100W |
| VI-B7M-IX-F4 | CONVERTER MOD DC/DC 10V 75W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SC16C554IB80 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Quad UART with 16-byte FIFO and infrared (IrDA) encoder/decoder |
| SC16C554IB80,528 | 功能描述:UART 接口集成电路 Quad 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 |
| SC16C554IB80,551 | 功能描述:UART 接口集成电路 16C 2.5V-5V 4CH UART 16B FIFO 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 |
| SC16C554IB80,557 | 功能描述:UART 接口集成电路 16C 2.5V-5V 4CH UART 16B FIFO 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 |
| SC16C650A | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Universal Asynchronous Receiver/Transmitter (UART) with 32-byte FIFO and infrared (IrDA) encoder/decoder |
发布紧急采购，3分钟左右您将得到回复。