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參數(shù)資料
| 型號： | AN1759 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | Add a Non-Volatile Clock to the MC68HC705J1A |
| 中文描述： | 添加非易失時鐘的MC68HC705J1A |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 316K |
| 代理商： | AN1759 |
Application Note
AN1759
8
Figure 6. Acknowledge Timing
2-Wire Protocol
Example
An example of the protocol needed to write $10 to address $07 of the
DS1307 is:
1.
The master transmits a start transfer.
2.
The master transmits the DS1307 7-bit identification code,
%1101000.
3.
Since this is a data write transfer, the master then transmits a 0.
4.
Since a byte has just been transmitted, the receiver (DS1307) will
now send out a LOW to acknowledge the transfer.
5.
The master reads the SDA pin for a LOW.
6.
The master sends out the address of $07 to the DS1307 and
receives back an acknowledge.
7.
The master sends out the data, $10, to the DS1307 and receives
back an acknowledge. The DS1307 writes $10 to address $07.
8.
Finally, a stop transfer is sent to the DS1307 to complete the
transaction.
SCL
SDA
ACK FROM SLAVE
SCL
SDA
ACK FROM MASTER
IF LAST RECEIVE, SDA IS HIGH
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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