欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號： MC68HC11A8VCFU2
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： HCMOS Single-Chip Microcontroller
中文描述： 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP64
封裝： QFP-64
文件頁數： 46/158頁
文件大小： 776K
代理商： MC68HC11A8VCFU2
MOTOROLA
5-2
SERIAL COMMUNICATIONS INTERFACE
MC68HC11A8
TECHNICAL DATA
5
1. The idle line is brought to a logic one state prior to transmission/reception of a
character.
2. A start bit (logic zero) is used to indicate the start of a frame.
3. The data is transmitted and received least-significant-bit first.
4. A stop bit (logic one) is used to indicate the end of a frame. A frame consists of
a start bit, a character of eight or nine data bits, and a stop bit.
5. A break is defined as the transmission or reception of a low (logic zero) for at
least one complete frame time.
Figure 5-1 Data Format
5.3 Wake-Up Feature
The receiver wake-up feature reduces SCI service overhead in multiple receiver sys-
tems. Software in each receiver evaluates the first character(s) of each message. If
the message is intended for a different receiver, the SCI can be placed in a sleep mode
so that the rest of the message will not generate requests for service. Whenever a new
message is started, logic in the sleeping receivers causes them to wake up so they
can evaluate the initial character(s) of the new message.
A sleeping SCI receiver can be configured (using the WAKE control bit in serial com-
munications control register 1 (SCCR1)) to wake up using either of two methods: idle
line wake up or address mark wake up.
In idle line wake up, a sleeping receiver wakes up as soon as the RxD line becomes
idle. Idle is defined as a continuous logic high on the RxD line for ten (or eleven) full
bit times. Systems using this type of wake up must provide at least one character time
of idle between messages to wake up sleeping receivers but must not allow any idle
time between characters within a message.
In address mark wake up, the most significant bit (MSB) in a character is used to indi-
cate that the character is an address (1) or a data (0) character. Sleeping receivers will
wake up whenever an address character is received. Systems using this method for
wake up would set the MSB of the first character in each message and leave it clear
for all other characters in the message. Idle periods may be present within messages
and no idle time is required between messages for this wake up method.
5.4 Receive Data (RxD)
Receive data is the serial data which is applied through the input line and the serial
communications interface to the internal bus. The receiver circuitry clocks the input at
a rate equal to 16 times the baud rate and this time is referred to as the RT clock.
0
1
2
3
4
5
6
7
8
*
0
IDLE LINE
SCI DATA FORMAT
1
START
STOP
START
* CONTROL BIT M IN SCCR1 SELECTS EITHER 8-BIT OR 9-BIT DATA.
相關PDF資料
PDF描述
MC68HC11A1VFU2 HCMOS Single-Chip Microcontroller
MC68HC11E0CB2 Microcontrollers
MC68S711E9CFN2 Microcontrollers
MC68HC711E20FS3 Microcontrollers
MC68L11E20FU2 Microcontrollers
相關代理商/技術參數
參數描述
MC68HC11AOFNR2 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述:
MC68HC11AX 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Bit Microcontrollers
MC68HC11C0 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller
MC68HC11C0CFN2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller
MC68HC11C0CFN3 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller
發布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發布成功！您可以繼續發布采購。也可以進入我的后臺，查看報價

發布成功！您可以繼續發布采購。也可以進入我的后臺，查看報價

*型號 *數量 廠商 批號 封裝
添加更多采購

我的聯系方式

*
*
*
主站蜘蛛池模板： 巴青县| 嵊泗县| 天峨县| 温州市| 唐河县| 凤城市| 德令哈市| 新乐市| 广南县| 含山县| 仙桃市| 泗洪县| 定西市| 余干县| 彩票| 呼图壁县| 临颍县| 麟游县| 高淳县| 潞西市| 峨山| 微山县| 鹤山市| 易门县| 潞城市| 闻喜县| 登封市| 汝南县| 台江县| 西乌| 丰原市| 平塘县| 利川市| 德惠市| 沁源县| 浦县| 阿尔山市| 普兰店市| 巫溪县| 汤原县| 兰州市|