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參數(shù)資料
| 型號： | PT7C4311WEX |
| 廠商： | Pericom |
| 文件頁數(shù)： | 17/17頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC LEAP YEAR Y2K 8SOIC |
| 標準包裝： | 1 |
| 類型： | 時鐘/日歷 |
| 特點： | 閏年，方波輸出，Y2K |
| 存儲容量： | 56B |
| 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： | 1.2 V ~ 5.5 V |
| 電壓 - 電源，電池： | 2 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-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 標準包裝 |
| 其它名稱： | PT7C4311WEXDKR |
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PT0322(08/09)
Ver: 2
9
Data Sheet
PT7C4311
Real-time Clock Module (I
2C Bus)
c)
Starting and Stopping I
2C 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 I
2C-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 I2C bus
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| PT7C4337WEX | 功能描述:IC RTC ALARM 8SOIC RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 實時時鐘 系列:- 標準包裝:2,500 系列:- 類型:時鐘/日歷 特點:警報器，閏年，監(jiān)控器，監(jiān)視計時器 存儲容量:- 時間格式:HH:MM:SS（12/24 小時） 數(shù)據(jù)格式:YY-MM-DD-dd 接口:I²C，2 線串口 電源電壓:2.7 V ~ 5.5 V 電壓 - 電源，電池:1.8 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
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