參數(shù)資料
型號(hào)： TL16C554I
廠商： Texas Instruments, Inc.
英文描述： ASYNCHRONOUS COMMUNICATIONS ELEMENT
中文描述： 異步通信元
文件頁(yè)數(shù)： 28/33頁(yè)
文件大?。?/td> 478K
代理商： TL16C554I
TL16C554, TL16C554I
ASYNCHRONOUS COMMUNICATIONS ELEMENT
SLLS165D – JANUARY 1994 – REVISED JULY 1998
28
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
programmable baud rate generator (continued)
Table 11. Baud Rates Using an 16-MHz Clock
BAUD RATE
DESIRED
DIVISOR (N) USED TO
GENERATE 16
×
CLOCK
20000
13334
9090
7434
6666
3334
1666
834
554
500
416
278
208
138
104
52
26
18
PERCENT ERROR DIFFERENCE
BETWEEN DESIRED AND ACTUAL
50
75
110
0
0.00
0.01
0.01
0.01
–0.02
0.04
–0.08
0.28
0.00
0.16
–0.08
0.16
0.64
0.16
0.16
0.16
–0.79
–2.34
–2.34
–2.34
0.00
134.5
150
300
600
1200
1800
2000
2400
3600
4800
7200
9600
19200
38400
56000
128000
256000
512000
1000000
8
4
2
1
receiver
Serial asynchronous data is input into the RXx terminal. The ACE continually searches for a high-to-low
transition from the idle state. When the transition is detected, a counter is reset and counts the 16
×
clock to
7 1/2, which is the center of the start bit. The start bit is valid when the RXx is still low. Verifying the start bits
prevents the receiver from assembling a false data character due to a low going noise spike on the RXx input.
The LCR determines the number of data bits in a character (LCR0, LCR1). When parity is enabled, LCR3 and
the polarity of parity LCR4 are needed. Status for the receiver is provided in the LSR. When a full character is
received including parity and stop bits, the data received indicator in LSR0 is set. The CPU reads the RBR, which
clears LSR0. If the character is not read prior to a new character transfer from the RSR to the RBR, the overrun
error status indicator is set in LSR1. If there is a parity error, the parity error is set in LSR2. If a stop bit is not
detected, a framing error indicator is set in LSR3.
In the FIFO mode operation, the data character and the associated error bits are stored in the receiver FIFO.
If the data into RXx is a symmetrical square wave, the center of the data cells occurs within
±
3.125% of the actual
center, providing an error margin of 46.875%. The start bit can begin as much as one 16
×
clock cycle prior to
being detected.
相關(guān)PDF資料
PDF描述
TL2575-15I 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
TL2575-33I 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
TL2575_0701 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
TL3414AIPE4 DUAL HIGH OUTPUT CURRENT OPERATIONAL AMPLIFIER
TL3414AIP DUAL HIGH OUTPUT CURRENT OPERATIONAL AMPLIFIER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TL16C554IFN 功能描述:UART 接口集成電路 Quad UART with 16-Byte FIFOs 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
TL16C554IFNG4 功能描述:UART 接口集成電路 Quad UART w/16-Byte FIFOs 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
TL16C554IFNR 功能描述:UART 接口集成電路 Quad UART with 16-Byte FIFOs 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
TL16C554IFNRG4 功能描述:UART 接口集成電路 Quad UART w/16-Byte FIFOs 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
TL16C554IPN 功能描述:UART 接口集成電路 Qd UART w/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
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

*
*
*