参数资料
| 型号： | PT7C4307WEX |
| 厂商： | Pericom |
| 文件页数： | 15/16页 |
| 文件大小： | 0K |
| 描述： | IC RTC ALARM NVSRAM 8SOIC |
| 标准包装： | 1 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，NVSRAM，方波输出 |
| 存储容量： | 56B |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | I²C，2 线串口 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 电压 - 电源，电池： | 2 V ~ 3.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 标准包装 |
| 其它名称： | PT7C4307WEXDKR |
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PT0206(08/09)
Ver: 3
8
Data Sheet
PT7C4307
Real-time Clock Module (I
2C Bus)
Starting and Stopping I
2C Bus Communications
Fig 2. Starting and stopping on I
2C bus
1) START condition, repeated START condition, and STOP condition
a) START condition
SDA level changes from high to low while SCL is at high level
b) STOP condition
SDA level changes from low to high while SCL is at high level
c) 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.
2) Data Transfers and Acknowledge Responses during I
2C-BUS Communication
a)
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.
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相关代理商/技术参数 |
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| PT7C4311WEX | 功能描述:IC RTC LEAP YEAR Y2K 8SOIC RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 实时时钟 系列:- 标准包装:2,500 系列:- 类型:时钟/日历 特点:警报器，闰年，监控器，监视计时器 存储容量:- 时间格式:HH:MM:SS（12/24 小时） 数据格式:YY-MM-DD-dd 接口:I²C，2 线串口 电源电压:2.7 V ~ 5.5 V 电压 - 电源，电池:1.8 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) |
| PT7C4337 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Real-time Clock Module (I2C Bus) |
| PT7C4337PE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Real-time Clock Module (I2C Bus) |
| PT7C4337UE | 制造商:Pericom Semiconductor Corporation 功能描述: |
| PT7C4337WE | 制造商:Pericom Semiconductor Corporation 功能描述:1.8V - 5.5V, REA TIME CLOCK, 12C BUS, ALARM/CLOCK OUTPUT - Bulk |
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