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参数资料
| 型号： | DS1685S-5 |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Timer or RTC |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO24 |
| 封装： | SOIC-24 |
| 文件页数： | 14/39页 |
| 文件大小： | 290K |
| 代理商： | DS1685S-5 |
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DS1685/DS1687
21 of 39
EXTENDED CONTROL REGISTERS
Two extended control registers are provided to supply controls and status information for the extended
features offered by the DS1685/DS1687. These are designated as extended control registers A and B and
are located in register bank 1, locations 04AH and 04BH, respectively. The functions of the bits within
these registers are described as follows.
EXTENDED CONTROL REGISTER 4A
MSB
LSB
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
VRT2
INCR
*
PAB
RF
WF
KF
VRT2 - This status bit gives the condition of the auxiliary battery. It is set to a logic 1 condition when
the external lithium battery is connected to the VBAUX. If this bit is read as a logic 0, the external battery
should be replaced.
INCR - Increment in Progress status bit. This bit is set to a 1 when an increment to the time/date
registers is in progress and the alarm checks are being made. INCR will be set to a 1 at 122 ms before the
update cycle starts and will be cleared to 0 at the end of each update cycle.
PAB - Power Active Bar control bit. When this bit is 0, the PWR pin is in the active low state. When
this bit is 1, the PWR pin is in the high impedance state. This bit can be written to a logic 1 or 0 by the
user. If either WF AND WIE = 1 OR KF AND KSE = 1, the PAB bit will be cleared to 0.
RF - Ram Clear Flag. This bit will be set to a logic 1 when a high to low transition occurs on the RCLR
input if RCE=1. The RF bit is cleared by writing it to a logic 0. This bit can also be written to a logic 1
to force an interrupt condition.
WF – Wake-up Alarm Flag - This bit is set to 1 when a wake-up alarm condition occurs or when the user
writes it to a 1. WF is cleared by writing it to a 0.
KF - Kickstart Flag - This bit is set to a 1 when a kickstart condition occurs or when the user writes it to a
1. This bit is cleared by writing it to a logic 0.
* Reserved bits. These bits are reserved for future use by Dallas Semiconductor. They can be read and
written, but have no effect on operation.
相关PDF资料 |
PDF描述 |
|---|---|
| DS1685EN-3 | 1 TIMER(S), REAL TIME CLOCK, PDSO24 |
| DS1685E-3 | 1 TIMER(S), REAL TIME CLOCK, PDSO24 |
| DS1685EN-5 | 1 TIMER(S), REAL TIME CLOCK, PDSO24 |
| DS1685-5 | 1 TIMER(S), REAL TIME CLOCK, PDIP24 |
| DS1685SN-3 | 1 TIMER(S), REAL TIME CLOCK, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1685S-5/T&R | 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 |
| DS1685S-5/TR | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:3V/5V Real-Time Clocks |
| DS1685S-5_12 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:3V/5V Real-Time Clocks |
| DS1685S-5+ | 功能描述:实时时钟 3V/5V RTC 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 |
| DS1685S-5+T& | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:3V/5V Real-Time Clocks |
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