參數(shù)資料
型號(hào)： 935270050151
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 4 CHANNEL(S), 5M bps, SERIAL COMM CONTROLLER, PQFP64
封裝： 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-314-2, LQFP-64
文件頁(yè)數(shù)： 8/55頁(yè)
文件大?。?/td> 706K
代理商： 935270050151
Philips Semiconductors
SC16C654/654D
Quad UART with 64-byte FIFO and infrared (IrDA) encoder/decoder
Product data
Rev. 02 — 13 March 2003
16 of 52
9397 750 10985
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
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
SC16C654/654D 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.
In the 16 mode for the PLCC68 package, the system/board designer can optionally
provide software controlled 3-State interrupt operation. This is accomplished by
INTSEL and MCR[3]. When INTSEL interface pin is left open or made a logic 0,
MCR[3] controls the 3-State interrupt outputs, INTA-INTD. When INTSEL is a logic 1,
MCR[3] has no effect on the INTA-INTD outputs, and the package operates with
interrupt outputs enabled continuously.
6.11 Programmable baud rate generator
The SC16C654/654D 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.
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 80 MHz (for 3.3 V and 5 V operation), as
required for supporting a 5 Mbits/s data rate. The SC16C654/654D can be congured
for internal or external clock operation. For internal clock oscillator operation, an
industry standard microprocessor crystal (parallel resonant/22-33 pF load) is
connected externally between the XTAL1 and XTAL2 pins (see Figure 6).
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 7).
The generator divides the input 16
× clock by any divisor from 1 to 216 1. The
SC16C654/654D divides the basic external clock by 16. Further division of this 16
×
clock provides two table rates to support low and high data rate applications using the
same system design. After a hardware reset and during initialization, the
SC16C654/654D sets the default baud rate table according to the state of the
Fig 6.
Crystal oscillator connection.
002aaa169
X1
1.8432 MHz
C1
68 pF
C2
68 pF
XT
AL1
XT
AL2
相關(guān)PDF資料
PDF描述
935270051512 4 CHANNEL(S), 5M bps, SERIAL COMM CONTROLLER, PQCC68
935270053529 1 CHANNEL(S), 3M bps, SERIAL COMM CONTROLLER, PQCC44
935270053512 1 CHANNEL(S), 3M bps, SERIAL COMM CONTROLLER, PQCC44
935270053518 1 CHANNEL(S), 3M bps, SERIAL COMM CONTROLLER, PQCC44
935270054157 1 CHANNEL(S), 3M bps, SERIAL COMM CONTROLLER, PQFP64
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
935270713557 制造商:NXP Semiconductors 功能描述:SUB ONLY IC CHP
935270792551 制造商:NXP Semiconductors 功能描述:IC BUFF DVR TRI-ST 16BIT 56VFBGA
935270792557 制造商:NXP Semiconductors 功能描述:IC BUFF DVR TRI-ST 16BIT 56VFBGA
935270793551 制造商:NXP Semiconductors 功能描述:IC BUS TRCVR 3-ST 16BIT 56VFBGA
935270793557 制造商:NXP Semiconductors 功能描述:IC BUS TRCVR 3-ST 16BIT 56VFBGA
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*