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参数资料
| 型号： | DS1689SN+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/36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
22 of 36
Extended Control Register 4B
MSB
LSB
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
ABE
E32K
CS
RCE
PRS
RIE
WIE
KSE
Bit 7: ABE (Auxiliary Battery Enable). This bit, when written to logic 1, enables the VBAUX pin for
extended functions.
Bit 6: E32K (Enable 32.768kHz Output). This bit, when written to logic 1, enables the 32,768Hz
oscillator frequency to be output on the SQW pin provided SQWE = 1.
Bit 5: CS (Crystal Select). When CS is set to 0, the oscillator is configured for operation with a crystal
that has a 6pF specified load capacitance. When CS = 1, the oscillator is configured for a 12.5pF crystal.
Bit 4: RCE (RAM Clear Enable). When set to a 1, this bit enables a low level on pin 4 (
RCLR) to clear
all 114 bytes of user RAM. When RCE = 0, the RAM clear function is disabled.
Bit 3: PRS (PAB Reset Select). When set to 0 the
PWR pin is set high impedance when the DS1689
goes into power-fail. When set to 1, the
PWR pin remains active upon entering power-fail.
Bit 2: RIE (RAM Clear Interrupt Enable). When RIE is set to 1, the
IRQ pin is driven low when a
RAM clear function is completed.
Bit 1: WIE (Wake-Up Alarm Interrupt Enable). When VCC voltage is absent and WIE is set to 1, the
PWR pin is driven active low when a wake-up condition occurs, causing the WF bit to be set to 1. When
VCC is then applied, the IRQ pin is also driven low. If WIE is set while system power is applied, both IRQ
and
PWR are driven low in response to WF being set to 1. When WIE is cleared to 0, the WF bit has no
effect on the
PWR or IRQ pins.
Bit 0: KSE (Kickstart Interrupt Enable). When VCC voltage is absent and KSE is set to 1, the PWR pin
is driven active low when a kickstart condition occurs (
KS pulsed low), causing the KF bit to be set to 1.
When VCC is then applied, the IRQ pin is also driven low. If KSE is set to 1 while system power is
applied, both
IRQ and PWR are driven low in response to KF being set to 1. When KSE is cleared to 0,
the KF bit has no effect on the
PWR or IRQ pins.
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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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