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| 型号： | SC16C2550IB48,157 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 9/46页 |
| 文件大小： | 0K |
| 描述： | IC DUART SOT313-2 |
| 标准包装： | 1,250 |
| 特点： | 2 通道 |
| 通道数： | 2，DUART |
| 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： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 管件 |
| 其它名称： | 935270020157 SC16C2550IB48 SC16C2550IB48-ND |
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Philips Semiconductors
SC16C2550
Dual UART with 16 bytes of transmit and receive FIFOs and IrDA
encoder/decoder
Product data
Rev. 03 — 19 June 2003
17 of 46
9397 750 11621
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
7.1 Transmit (THR) and Receive (RHR) Holding Registers
The serial transmitter section consists of an 8-bit Transmit Hold Register (THR) and
Transmit Shift Register (TSR). The status of the THR is provided in the Line Status
Register (LSR). Writing to the THR transfers the contents of the data bus (D7-D0) to
the TSR and UART via the THR, providing that the THR is empty. The THR empty
ag in the LSR register will be set to a logic 1 when the transmitter is empty or when
data is transferred to the TSR. Note that a write operation can be performed when the
THR empty ag is set (logic 0 = at least one byte in FIFO/THR, logic 1 = FIFO/THR
empty).
The serial receive section also contains an 8-bit Receive Holding Register (RHR) and
a Receive Serial Shift Register (RSR). Receive data is removed from the SC16C2550
and receive FIFO by reading the RHR register. The receive section provides a
mechanism to prevent false starts. On the falling edge of a start or false start bit, an
internal receiver counter starts counting clocks at the 16
× clock rate. After 7-12
clocks, the start bit time should be shifted to the center of the start bit. At this time the
start bit is sampled, and if it is still a logic 0 it is validated. Evaluating the start bit in
this manner prevents the receiver from assembling a false character. Receiver status
codes will be posted in the LSR.
7.2 Interrupt Enable Register (IER)
The Interrupt Enable Register (IER) masks the interrupts from receiver ready,
transmitter empty, line status and modem status registers. These interrupts would
normally be seen on the INTA, INTB output pins.
Table 8:
Interrupt Enable Register bits description
Bit
Symbol
Description
7
IER[7]
CTS interrupt.
Logic 0 = Disable the CTS interrupt (normal default condition).
Logic 1 = Enable the CTS interrupt. The SC16C2550 issues an
interrupt when the CTS pin transitions from a logic 0 to a logic 1.
6
IER[6]
RTS interrupt.
Logic 0 = Disable the RTS interrupt (normal default condition).
Logic 1 = Enable the RTS interrupt. The SC16C2550 issues an
interrupt when the RTS pin transitions from a logic 0 to a logic 1.
5
IER[5]
Xoff interrupt.
Logic 0 = Disable the software ow control, receive Xoff interrupt
(normal default condition).
Logic 1 = Enable the software ow control, receive Xoff interrupt.
4
IER[4]
Sleep mode.
Logic 0 = Disable sleep mode (normal default condition).
Logic 1 = Enable sleep mode.
3
IER[3]
Modem Status Interrupt. This interrupt will be issued whenever
there is a modem status change as reected in MSR[0-3].
Logic 0 = Disable the modem status register interrupt (normal
default condition).
Logic 1 = Enable the modem status register interrupt.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SC16C2550IN40 | 制造商:PHILIP 功能描述: |
| SC16C2550IN40,112 | 功能描述:IC UART DUAL W/FIFO 40-DIP RoHS:是 类别:集成电路 (IC) >> 接口 - UART（通用异步接收器/发送器） 系列:- 标准包装:250 系列:- 特点:* 通道数:2，DUART FIFO's:16 字节 规程:RS232，RS485 电源电压:2.25 V ~ 5.5 V 带并行端口:- 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:48-TQFP 供应商设备封装:48-TQFP（7x7） 包装:托盘 其它名称:XR16L2551IM-F-ND |
| SC16C2552 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Dual UART with 16-byte transmit and receive FIFOs |
| SC16C2552B | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs |
| SC16C2552BIA44 | 功能描述:UART 接口集成电路 16CB 2.5V-5V 2CH 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 |
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