參數(shù)資料
型號(hào)： SC16C652B
廠商： NXP Semiconductors N.V.
英文描述： 5V, 3.3 V and 2.5V dual UART, 5 Mbit/s (max.),with 32-byte FIFOs and infrared(IrDA) encoder/decoder
中文描述： 5V的，3.3V和2.5V雙，5兆的UART /秒（最大），32字節(jié)的FIFO和紅外線（IrDA）編碼器/解碼器
文件頁(yè)數(shù)： 12/44頁(yè)
文件大小： 205K
代理商： SC16C652B
Philips Semiconductors
SC16C652B
Dual UART with 32-byte FIFOs and IrDA encoder/decoder
Product data
Rev. 03 — 10 December 2004
12 of 44
9397 750 14452
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
6.8 Programmable baud rate generator
The SC16C652B 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 SC16C652B 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 operating with a frequency of up to 80 MHz. To obtain maximum data rate,
it is necessary to use full rail swing on the clock input. The SC16C652B can be
configured 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. 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 2
16
1. The
SC16C652B divides the basic external clock by 16. The basic 16
×
clock provides
table rates to support standard and custom applications using the same system
design. The rate table is configured via the DLL and DLM internal register functions.
Customized Baud Rates can be achieved by selecting the proper divisor values for
the MSB and LSB sections of baud rate generator.
Programming the Baud Rate Generator Registers DLM (MSB) and DLL (LSB)
provides a user capability for selecting the desired final baud rate. The example in
Table 6
shows the selectable baud rate table available when using a 1.8432 MHz
external clock input.
Fig 4.
Crystal oscillator connection.
002aaa586
X1
1.8432 MHz
C1
22 pF
C2
47 pF
X
X
X1
1.8432 MHz
C1
22 pF
C2
33 pF
X
X
1.5 k
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SC16C652BIB48 功能描述:UART 接口集成電路 16CB 2.5V-5V 2CH UART 32B 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
SC16C652BIB48,128 功能描述:UART 接口集成電路 16CB 2.5V-5V 2CH 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
SC16C652BIB48,151 功能描述:UART 接口集成電路 2CH. UART 32B 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
SC16C652BIB48,157 功能描述:UART 接口集成電路 16CB 2.5V-5V 2CH 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
SC16C652BIB48151 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述:
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