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参数资料
| 型号： | SC16IS762IBS-T |
| 厂商： | NXP Semiconductors |
| 文件页数： | 8/60页 |
| 文件大小： | 0K |
| 描述： | IC UART DUAL I2C/SPI 32-HVQFN |
| 标准包装： | 6,000 |
| 特点： | 低电流 |
| 通道数： | 2，DUART |
| FIFO's： | 64 字节 |
| 规程： | RS232，RS485 |
| 电源电压： | 2.5V, 3.3V |
| 带自动流量控制功能： | 是 |
| 带故障启动位检测功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-HVQFN（5x5） |
| 包装： | 带卷 (TR) |
| 配用： | 568-4000-ND - DEMO BOARD SPI/I2C TO DUAL UART 568-3510-ND - DEMO BOARD SPI/I2C TO UART |
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SC16IS752_SC16IS762
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 9 — 22 March 2012
16 of 60
NXP Semiconductors
SC16IS752; SC16IS762
Dual UART with I2C-bus/SPI interface, 64-byte FIFOs, IrDA SIR
7.6 Sleep mode
Sleep mode is an enhanced feature of the SC16IS752/SC16IS762 UART. It is enabled
when EFR[4], the enhanced functions bit, is set and when IER[4] is set. Sleep mode is
entered when:
The serial data input line, RX, is idle (see Section 7.7 “Break and time-out
The TX FIFO and TX shift register are empty.
There are no interrupts pending except THR.
Remark: Sleep mode will not be entered if there is data in the RX FIFO.
In Sleep mode, the clock to the UART is stopped. Since most registers are clocked using
these clocks, the power consumption is greatly reduced. The UART will wake up when
any change is detected on the RX line, when there is any change in the state of the
modem input pins, or if data is written to the TX FIFO.
Remark: Writing to the divisor latches DLL and DLH to set the baud clock must not be
done during Sleep mode. Therefore, it is advisable to disable Sleep mode using IER[4]
before writing to DLL or DLH.
7.7 Break and time-out conditions
When the UART receives a number of characters and these data are not enough to set off
the receive interrupt (because they do not reach the receive trigger level), the UART will
generate a time-out interrupt instead, 4 character times after the last character is
received. The time-out counter will be reset at the center of each stop bit received or each
time the receive FIFO is read.
A break condition is detected when the RX pin is pulled LOW for a duration longer than
the time it takes to send a complete character plus start, stop and parity bits. A break
condition can be sent by setting LCR[6], when this happens the TX pin will be pulled LOW
until LSR[6] is cleared by the software.
7.8 Programmable baud rate generator
The SC16IS752/SC16IS762 UART contains a programmable baud rate generator that
takes any clock input and divides it by a divisor in the range between 1 and (216
1). An
additional divide-by-4 prescaler is also available and can be selected by MCR[7], as
shown in Figure 10. The output frequency of the baud rate generator is 16
the baud
rate. The formula for the divisor is:
(1)
where:
prescaler = 1, when MCR[7] is set to logic 0 after reset (divide-by-1 clock selected)
prescaler = 4, when MCR[7] is set to logic 1 after reset (divide-by-4 clock selected).
Remark: The default value of prescaler after reset is divide-by-1.
divisor
XTAL1 crystal input frequency
prescaler
-----------------------------------------------------------------------------------
desired baud rate
16
-----------------------------------------------------------------------------------------
=
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SC16IS762IPW | 功能描述:UART 接口集成电路 DUAL UART 64BYTE 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 |
| SC16IS762IPW,112 | 功能描述:UART 接口集成电路 DUAL UART 64BYTE 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 |
| SC16IS762IPW,128 | 功能描述:UART 接口集成电路 I2C/SPI-UARTBRIDGE 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 |
| SC16IS762IPW112 | 制造商:NXP Semiconductors 功能描述:IC DUAL UART FIFO 5MBPS 3.6V TSSOP28 |
| SC16IS762IPW-F | 功能描述:UART 接口集成电路 I2C/SPI-UARTBRIDGE W/IRDA AND GPIO 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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