参数资料
| 型号： | SC16C650BIB48,128 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 3/48页 |
| 文件大小： | 0K |
| 描述： | IC UART SOT313-2 |
| 标准包装： | 2,000 |
| 通道数： | 1，UART |
| FIFO's： | 32 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： | 带卷 (TR) |
| 其它名称： | 935274391128 SC16C650BIB48-F SC16C650BIB48-F-ND |
第1页第2页当前第3页第4页第5页第6页第7页第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
SC16C650B_4
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 14 September 2009
11 of 48
NXP Semiconductors
SC16C650B
UART with 32-byte FIFOs and IrDA encoder/decoder
In the event that the receive buffer is overlling and ow control needs to be executed, the
SC16C650B automatically sends an Xoff message (when enabled) via the serial TX
output to the remote modem. The SC16C650B sends the Xoff1/Xoff2 characters as soon
as received data passes the programmed trigger level. To clear this condition, the
SC16C650B will transmit the programmed Xon1/Xon2 characters as soon as receive data
drops below the next low or programmed trigger level.
6.5 Special feature software ow control
A special feature is provided to detect an 8-bit character when EFR[5] is set. When 8-bit
character is detected, it will be placed on the user-accessible data stack along with normal
incoming RX data. This condition is selected in conjunction with EFR[3:0]. Note that
software ow control should be turned off when using this special mode by setting
EFR[3:0] to a logic 0.
The SC16C650B compares each incoming receive character with Xoff2 data. If a match
exists, the received data will be transferred to the FIFO, and ISR[4] will be set to indicate
detection of a special character. Although Table 8 “SC16C650B internal registers” shows
each X-register with eight bits of character information, the actual number of bits is
dependent on the programmed word length. Line Control Register bits LCR[1:0] dene the
number of character bits, i.e., either 5 bits, 6 bits, 7 bits or 8 bits. The word length selected
by LCR[1:0] also determine the number of bits that will be used for the special character
comparison. Bit 0 in the X-registers corresponds with the LSB bit for the receive character.
6.6 Hardware/software and time-out interrupts
Three special interrupts have been added to monitor the hardware and software ow
control. The interrupts are enabled by IER[7:5]. Care must be taken when handling these
interrupts. Following a reset, the transmitter interrupt is enabled, the SC16C650B will
issue an interrupt to indicate that the Transmit Holding Register is empty. This interrupt
must be serviced prior to continuing operations. The ISR register provides the current
singular highest priority interrupt only. It could be noted that CTS and RTS interrupts have
lowest interrupt priority. A condition can exist where a higher priority interrupt may mask
the lower priority CTS/RTS interrupt(s). Only after servicing the higher pending interrupt
will the lower priority CTS/RTS interrupt(s) be reected in the status register. Servicing the
interrupt without investigating further interrupt conditions can result in data errors.
When two interrupt conditions have the same priority, it is important to service these
interrupts correctly. Receive Data Ready and Receive Time-Out have the same interrupt
priority (when enabled by IER[0]). The receiver issues an interrupt after the number of
characters have reached the programmed trigger level. In this case, the SC16C650B
FIFO may hold more characters than the programmed trigger level. Following the removal
of a data byte, the user should re-check LSR[0] for additional characters. A Receive
Time-Out will not occur if the receive FIFO is empty. The time-out counter is reset at the
center of each stop bit received or each time the Receive Holding Register (RHR) is read.
The actual time-out value is 4 character time.
相关PDF资料 |
PDF描述 |
|---|---|
| AT32UC3L016-ZAUR | IC MCU AVR32 16K FLASH 48VQFN |
| ATMEGA88-15MZ | MCU AVR 8K FLASH 15MHZ 32-QFN |
| ATMEGA168P-20MQR | MCU AVR 16K FLASH 20MHZ 32-QFN |
| ATMEGA164A-MCHR | IC MCU AVR 16K 20MHZ 44QFN |
| SC16C2550BIBS,151 | IC UART DUAL W/FIFO 32-HVQFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD524CD/+ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Instrumentation Amp， Pin-Programmable |
| AD524CDZ | 功能描述:IC AMP INST 1MHZ PREC LN 16CDIP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:45nA 电压 - 输入偏移:2000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:40mA 电压 - 电源，单路/双路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) 其它名称:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| AD524CE | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述: |
| AD524S | 制造商:AD 制造商全称:Analog Devices 功能描述:Precision Instrumentation Amplifier |
| AD524SCHIPS | 制造商:AD 制造商全称:Analog Devices 功能描述:Precision Instrumentation Amplifier |
发布紧急采购，3分钟左右您将得到回复。