- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371047 > MC68HC705BD3 (Motorola, Inc.) 8-Bit Microcontroller Units (MCU).(8位微控制器) PDF資料下載
參數(shù)資料
| 型號： | MC68HC705BD3 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| 中文描述： | 8位微控制器單元（MCU）。（8位微控制器） |
| 文件頁數(shù)： | 51/112頁 |
| 文件大小： | 676K |
| 代理商： | MC68HC705BD3 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁當前第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁
MC68HC05BD3
MOTOROLA
7-5
M-BUS SERIAL INTERFACE
7
7.2.7
Clock Synchronization
Since wire-AND logic is performed on the SCL line, a high to low transition on SCL line will affect
the devices connected to the bus. The devices start counting their low period and once a device's
clock has gone low, it will hold the SCL line low until the clock high state is reached. However, the
change of low to high in this device clock may not change the state of the SCL line, if another
device clock is still in its low period. Therefore synchronized clock SCL will be held low by the
device which releases SCL to a logic high in the last place. Devices with shorter low periods enter
a high wait state during this time (see Figure 7-3). When all devices concerned have counted off
their low period, the synchronized clock SCL line will be released and go high. All of them will start
counting their high periods. The first device to complete its high period will again pull the SCL line
low.
7.2.8
Handshaking
The clock synchronization mechanism can be used as a handshake in data transfer. Slave device
may hold the SCL low after completion of one byte transfer (9 bits). In such case, it will halt the
bus clock and force the master clock in a wait state until the slave releases the SCL line.
7.3
M-Bus Registers
There are five registers used in the M-Bus interface, these are discussed in the following
paragraphs.
Figure 7-3
Clock Synchronization
SCL1
SCL2
SCL
Internal counter reset
WAIT
Start counting high period
TPG
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC05C4 | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| MC68HC05C5 | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| MC68HC05C8A | Microcontrollers |
| MC68HC05C9A | 8-Bit Microcontroller(8位微控制器) |
| MC68HCL05C9A | 8-Bit Microcontroller(8位微控制器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC705BD3P | 制造商:Motorola 功能描述:MOTOROLA NXC4C |
| MC68HC705BD7P1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC68HC705C4ACP | 制造商:Freescale Semiconductor 功能描述: |
| MC68HC705C8AB | 功能描述:IC MCU 8K OTP 2.1MHZ 42-SDIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲器容量:40KB（20K x 16） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| MC68HC705C8ACB | 制造商:Rochester Electronics LLC 功能描述:HCO5 CORE + 8K RAM + EPR - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。