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参数资料
| 型号： | DS1689SN+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/36页 |
| 文件大小： | 0K |
| 描述： | IC RTC SER NV RAM CTRL IN 28SOIC |
| 标准包装： | 1,000 |
| 类型： | 时钟/日历 |
| 特点： | NVSRAM |
| 存储容量： | 114B |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | 并联 |
| 电源电压： | 2.7 V ~ 3.3 V，4.5 V ~ 5.5 V |
| 电压 - 电源，电池： | 2.5 V ~ 3.7 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC |
| 包装： | 带卷 (TR) |
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DS1689/DS1693
21 of 36
EXTENDED CONTROL REGISTERS
Two extended control registers are provided to supply controls and status information for the extended
features offered by the DS1689/DS1693. 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
*Reserved bits. These bits are reserved for future use by Dallas Semiconductor. They can be read and written, but have no effect on
operation.
Bit 7: 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 logic 0, the external
battery should be replaced.
Bit 6: INCR (Increment in Progress Status). This bit is set to 1 when an increment to the time/date
registers is in progress and the alarm checks are being made. INCR is set to 1 at 122
s before the update
cycle starts and is cleared to 0 at the end of each update cycle.
Bit 4: PAB (Power Active Bar Control). When this bit is 0, the
PWR pin is in the active-low state. The
user can write this bit to logic 1 or logic 0. If either [WF and WIE = 1] or [KF and KSE = 1], the PAB bit
is cleared to 0.
Bit 2: RF (RAM Clear Flag). This bit is set to 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 logic 0. This bit can also be written to logic 1 to
force an interrupt condition.
Bit 1: 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 1. WF is cleared by writing it to 0.
Bit 0: KF (Kickstart Flag). This bit is set to 1 when a kickstart condition occurs or when the user writes
it to 1. This bit is cleared by writing it to logic 0.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1689S-TRL | 功能描述:IC RTC SER W/NV RAM CTRL 28-SOIC RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 实时时钟 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 类型:时钟/日历 特点:警报器，闰年，SRAM 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:SPI 电源电压:2 V ~ 5.5 V 电压 - 电源，电池:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN EP 包装:管件 |
| DS1691 | 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 |
| DS1691 WAF | 制造商:Texas Instruments 功能描述: |
| DS1691/1692 WAF | 制造商:Texas Instruments 功能描述: |
| DS1691A | 制造商:NSC 制造商全称:National Semiconductor 功能描述:(RS-422/RS-423) Line Drivers with TRI-STATE Outputs |
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