參數(shù)資料
型號： SC16C550BIBS,157
廠商： NXP Semiconductors
文件頁數(shù)： 6/48頁
文件大小： 0K
描述： IC UART SOT617-1
標準包裝： 2,450
特點： 可編程
通道數(shù)： 1，UART
FIFO's： 16 字節(jié)
電源電壓： 2.5V，3.3V，5V
帶自動流量控制功能： 是
帶故障啟動位檢測功能： 是
帶調(diào)制解調(diào)器控制功能： 是
帶CMOS： 是
安裝類型： 表面貼裝
封裝/外殼： 32-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 32-HVQFN（5x5）
包裝： 托盤
其它名稱： 935279497157
SC16C550BIBS
SC16C550BIBS-ND
SC16C550B_5
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 05 — 1 October 2008
14 of 48
NXP Semiconductors
SC16C550B
5 V, 3.3 V and 2.5 V UART with 16-byte FIFOs
6.5 Programmable baud rate generator
The SC16C550B supports high speed modem technologies that have increased input
data rates by employing data compression schemes. For example, a 33.6 kbit/s modem
that employs data compression may require a 115.2 kbit/s input data rate. A 128.0 kbit/s
ISDN modem that supports data compression may need an input data rate of 460.8 kbit/s.
The SC16C550B can support a standard data rate of 921.6 kbit/s.
A single baud rate generator is provided for the transmitter and receiver, allowing
independent TX/RX channel control. The programmable baud rate generator is capable of
accepting an input clock up to 48 MHz, as required for supporting a 3 Mbit/s data rate.
The SC16C550B can be congured for internal or external clock operation. For internal
clock oscillator operation, an industry standard microprocessor crystal is connected
externally between the XTAL1 and XTAL2 pins (see Figure 10). Alternatively, an external
clock can be connected to the XTAL1 pin to clock the internal baud rate generator for
standard or custom rates (see Table 6).
The generator divides the input 16
× clock by any divisor from 1 to (216 1). The
SC16C550B divides the basic crystal or external clock by 16. The frequency of the
BAUDOUT output pin is exactly 16
× (16 times) the selected baud rate
(BAUDOUT = 16
× baud rate). Customized baud rates can be achieved by selecting the
proper divisor values for the MSB and LSB sections of the baud rate generator.
Programming the baud rate generator registers DLM (MSB) and DLL (LSB) provides a
user capability for selecting the desired nal baud rate. The examples in Table 6 shows
selectable baud rates when using a 1.8432 MHz crystal.
For custom baud rates, the divisor value can be calculated using the following equation:
(1)
Fig 10. Crystal oscillator connection
002aaa870
C2
47 pF
XTAL1
XTAL2
X1
1.8432 MHz
C1
22 pF
C2
33 pF
XTAL1
XTAL2
1.5 k
X1
1.8432 MHz
C1
22 pF
divisor in decimal
()
XTAL1 clock frequency
serial data rate
16
×
----------------------------------------------------------------
=
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SC16C550BIBS-F 功能描述:UART 接口集成電路 16CB 2.5V-5V 1CH UART 16B FIFO 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
SC16C550BIBS-S 功能描述:UART 接口集成電路 16CB 2.5V-5V 1CH UART 16B FIFO 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
SC16C550BIN40 制造商:NXP Semiconductors 功能描述:UART 16BYTE FIFO 16C550 DIP40
SC16C550BIN40,112 功能描述:UART 接口集成電路 16CB 2.5V-5V 1CH UART 16B FIFO 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
SC16C550IA44 制造商:NXP Semiconductors 功能描述:UART 16BYTE FIFO 16C550 PLCC44
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