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參數(shù)資料
| 型號： | SC16IS741IPW,128 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 13/17頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART 16TSSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 特點： | RS-485 |
| 通道數(shù)： | 1，UART |
| FIFO's： | 64 字節(jié) |
| 規(guī)程： | RS232，RS485 |
| 電源電壓： | 2.5V, 3.3V |
| 帶自動流量控制功能： | 是 |
| 帶IrDA 編碼器/解碼器： | 是 |
| 帶調(diào)制解調(diào)器控制功能： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-TSSOP |
| 包裝： | 帶卷 (TR) |
SC16IS741_1
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 01 — 29 April 2010
5 of 52
NXP Semiconductors
SC16IS741
Single UART with I2C-bus/SPI interface, 64-byte FIFOs, IrDA SIR
[1]
7.
Functional description
The UART will perform serial-to-I2C conversion on data characters received from
peripheral devices or modems, and I2C-to-serial conversion on data characters
transmitted by the host. The complete status the SC16IS741 UART can be read at any
time during functional operation by the host.
The SC16IS741 can be placed in an alternate mode (FIFO mode) relieving the host of
excessive software overhead by buffering received/transmitted characters. Both the
receiver and transmitter FIFOs can store up to 64 characters (including three additional
bits of error status per character for the receiver FIFO) and have selectable or
programmable trigger levels.
The SC16IS741 has selectable hardware flow control and software flow control. Hardware
flow control significantly reduces software overhead and increases system efficiency by
automatically controlling serial data flow using the RTS output and CTS input signals.
Software flow control automatically controls data flow by using programmable Xon/Xoff
characters.
The UART includes a programmable baud rate generator that can divide the timing
reference clock input by a divisor between 1 and (216 –1).
VSS
9
-
ground
RTS
10
O
UART request to send (active LOW). A logic 0 on the RTS pin
indicates the transmitter has data ready and waiting to send. Writing a
logic 1 in the modem control register MCR[1] will set this pin to a
logic 0, indicating data is available. After a reset this pin is set to a
logic 1. This pin only affects the transmit and receive operations when
auto RTS function is enabled via the Enhanced Feature Register
(EFR[6]) for hardware flow control operation.
CTS
11
I
UART clear to send (active LOW). A logic 0 (LOW) on the CTS pin
indicates the modem or data set is ready to accept transmit data from
the SC16IS741. Status can be tested by reading MSR[4]. This pin
only affects the transmit and receive operations when auto CTS
function is enabled via the Enhanced Feature Register EFR[7] for
hardware flow control operation.
TX
12
O
UART transmitter output. During the local Loopback mode, the TX
output pin is disabled and TX data is internally connected to the
UART RX input.
RX
13
I
UART receiver input. During the local Loopback mode, the RX input
pin is disabled and TX data is connected to the UART RX input
internally.
RESET
14
I
device hardware reset (active LOW)[1]
XTAL1
15
I
Crystal input or external clock input. Functions as a crystal input or as
an external clock input. A crystal can be connected between XTAL1
and XTAL2 to form an internal oscillator circuit (see Figure 11).
Alternatively, an external clock can be connected to this pin.
XTAL2
16
O
Crystal output or clock output. (See also XTAL1.) XTAL2 is used as a
crystal oscillator output.
Table 2.
Pin description …continued
Symbol
Pin
Type Description
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| SC16IS74Q900 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single UART with I2C-bus/SPI interface, 64 bytes of transmit and receive FIFOs |
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| SC16IS750IBS | 功能描述:UART 接口集成電路 I2C/SPI-UARTBRIDGE W/IRDA AND GPIO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16IS750IBS,128 | 功能描述:UART 接口集成電路 I2C/SPI-UARTBRIDGE W/IRDA AND GPIO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16IS750IBS,151 | 功能描述:UART 接口集成電路 UART I2C/SPI RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
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