参数资料
| 型号： | PT7C43390WEX |
| 厂商： | Pericom |
| 文件页数： | 23/23页 |
| 文件大小： | 0K |
| 描述： | IC REAL TIME CLOCK 8SOIC |
| 标准包装： | 1 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，方波输出 |
| 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： | 1.3 V ~ 5.5 V |
| 电压 - 电源，电池： | 1.1 V ~ 5.5 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： | PT7C43390WEXDKR |
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PT0280(08/09)
Ver: 3
9
Data Sheet
PT7C43390
2-Wire Real-time Clock Module
5.
Clock adjustment register
The clock adjustment register is a 1-byte register that is used to logically correct real-time data. When not using the clock
adjustment register, set this register to 00h using the clock adjustment register write command.
For the “register value”, refer to “Clock Adjustment Function”.
R/W: Read/Write-enabled
6.
Free register
The free register is a 1-byte SRAM type register that can be set freely by users. It can be read and written within the operating
voltage range (1.3 to 5.5 V).
R/W: Read/Write-enabled
Initialization at Power-on and Power-on Detector
When power is applied to this IC, status register_1 is set to “80h” (bit 7 (POC flag) of status register_1 is set to “1”) by the power-
on detector and a 1 Hz clock is output from the INT pin. This function is provided to adjust the oscillation frequency. In normal
use, the IC must be initialized at power-on. Initialization is performed by writing “1” to bit 0 (RESET flag) of status register_1.
Also, the IC must be initialized when the POC flag is set to “1”. After initialization, the POC flag is set to “0”. For normal
operation of the power-on detector, first hold the IC power supply voltage at 0 V and then increase it.
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相关代理商/技术参数 |
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| PT7C4363 | 制造商:PERICOM 制造商全称:Pericom Semiconductor Corporation 功能描述:Real-time Clock Module (I2C Bus) |
| PT7C4363P | 制造商:PERICOM 制造商全称:Pericom Semiconductor Corporation 功能描述:Real-time Clock Module (I2C Bus) |
| PT7C4363W | 制造商:PERICOM 制造商全称:Pericom Semiconductor Corporation 功能描述:Real-time Clock Module (I2C Bus) |
| PT7C4363WEX | 制造商:Pericom 功能描述:Real-time Clock Module(I2C Bus) |
| PT7C4372ALE | 制造商:Pericom Semiconductor Corporation 功能描述: |
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