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參數(shù)資料
| 型號： | PT7C4563UEX |
| 廠商： | Pericom |
| 文件頁數(shù)： | 2/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC REAL TIME CLOCK 8MSOP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 時鐘/日歷 |
| 特點(diǎn)： | 警報(bào)器，閏年，方波輸出 |
| 時間格式： | HH:MM:SS（24 小時） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 1.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-MSOP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | PT7C4563UEXDKR |
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PT0333(09/09)
Ver: 0
10
Data Sheet
PT7C4563
Real-time Clock Module (I2C Bus)
c)
Starting and Stopping I2C Bus Communications
START condition, repeated START condition, and STOP condition
START condition
SDA level changes from high to low while SCL is at high level
STOP condition
SDA level changes from low to high while SCL is at high level
Repeated START condition (RESTART condition)
In some cases, the START condition occurs between a previous START condition and the next STOP condition, in
which case the second START condition is distinguished as a RESTART condition. Since the required status is the same as for the
START condition, the SDA level changes from high to low while SCL is at high level.
d)
Data Transfers and Acknowledge Responses during I2C-BUS Communication
Data transfers
Data transfers are performed in 8-bit (1 byte) units once the START condition has occurred. There is no limit on the amount
(bytes) of data that are transferred between the START condition and STOP condition.
The address auto increment function operates during both write and read operations.
Updating of data on the transmitter (transmitting side)'s SDA line is performed while the SCL line is at low level.
The receiver (receiving side) captures data while the SCL line is at high level.
*Note with caution that if the SDA data is changed while the SCL line is at high level, it will be treated as a START, RESTART,
or STOP condition.
Fig.2 Starting and stopping on I
2C bus
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