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参数资料
| 型号： | DS1646-120 |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, DMA32 |
| 封装： | MODULE, DIP-32 |
| 文件页数： | 7/11页 |
| 文件大小： | 382K |
| 代理商： | DS1646-120 |
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DATA RETENTION MODE
When VCC is within nominal limits (VCC > 4.5 volts) the DS1646 can be accessed as described above with
read or write cycles. However, when VCC is below the power-fail point VPF (point at which write
protection occurs) the internal clock registers and RAM are blocked from access. This is accomplished
internally by inhibiting access via the CE signal. At this time the power-fail output signal ( PFO) will be
driven active low and will remain active until VCC returns to nominal levels. When VCC falls below the
level of the internal battery supply, power input is switched from the VCC pin to the internal battery and
clock activity, RAM, and clock data are maintained from the battery until VCC is returned to nominal
level.
相关PDF资料 |
PDF描述 |
|---|---|
| DS1646P-120 | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
| DS1646L-120 | 0 TIMER(S), REAL TIME CLOCK, DSO34 |
| DS1646 | 0 TIMER(S), REAL TIME CLOCK, DMA32 |
| DS1646P | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
| DS1647-120 | 0 TIMER(S), REAL TIME CLOCK, DMA28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1646-120+ | 功能描述:实时时钟 NV Timekeeping RAM RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1646-15 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:NVRAM (Battery Based) |
| DS1646H-120 | 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1646L-12 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:NVRAM (Battery Based) |
| DS1646L-120 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:NVRAM (Battery Based) |
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