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参数资料
| 型号： | PT7C4307PE |
| 厂商： | PERICOM SEMICONDUCTOR CORP |
| 元件分类： | XO, clock |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDIP8 |
| 封装： | LEAD FREE, MS-001BA, DIP-8 |
| 文件页数： | 2/20页 |
| 文件大小： | 517K |
| 代理商： | PT7C4307PE |
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PT0206(02/05)
Ver: 0
10
Preliminary Data Sheet
PT7C4307
Real-time Clock Module (I
2C Bus)
I
2C Bus Interface
Overview of I
2C-BUS
The I
2C bus supports bi-directional communications via two signal lines: the SDA (data) line and SCL (clock) line. A combination
of these two signals is used to transmit and receive communication start/stop signals, data signals, acknowledge signals, and so on.
Both the SCL and SDA signals are held at high level whenever communications are not being performed. The starting and
stopping of communications is controlled at the rising edge or falling edge of SDA while SCL is at high level. During data
transfers, data changes that occur on the SDA line are performed while the SCL line is at low level, and on the receiving side the
data is captured while the SCL line is at high level. In either case, the data is transferred via the SCL line at a rate of one bit per
clock pulse. The I
2C bus device does not include a chip select pin such as is found in ordinary logic devices. Instead of using a
chip select pin, slave addresses are allocated to each device and the receiving device responds to communications only when its
slave address matches the slave address in the received data.
System Configuration
All ports connected to the I
2C bus must be either open drain or open collector ports in order to enable AND connections to
multiple devices.
SCL and SDA are both connected to the VDD line via a pull-up resistance. Consequently, SCL and SDA are both held at high
level when the bus is released (when communication is not being performed).
Fig 1. System configuration
Master
MCU
Slave
RTC
Other Peripheral
Device
Vcc
SDA
SCL
Note: When there is only one master, the MCU is ready for driving SCL to "H" and R
P of SCL may not required.
R
P
R
P
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PT7C4307W | 制造商:PERICOM 制造商全称:Pericom Semiconductor Corporation 功能描述:Real-time Clock Module (I2C Bus) |
| PT7C4307WEX | 功能描述:IC RTC ALARM NVSRAM 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) |
| 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) |
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