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参数资料
| 型号： | DS1747-70+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | XO, clock |
| 英文描述： | Y2K-Compliant, Nonvolatile Timekeeping RAMs |
| 中文描述： | 0 TIMER(S), REAL TIME CLOCK, PDIP32 |
| 封装： | 0.740 INCH, ROHS COMPLIANT, EDIP-32 |
| 文件页数： | 10/16页 |
| 文件大小： | 207K |
| 代理商： | DS1747-70+ |
DS1747/DS1747P Y2K-Compliant, Nonvolatile Timekeeping RAMs
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ORDERING INFORMATION
PART
SUPPLY
VOLTAGE
(V)
TEMP RANGE
PIN-PACKAGE
TOP MARK
DS1747-70+
5.0
0°C to +70°C
32 EDIP (0.740a)
DS1747-70+
DS1747-70IND+
5.0
-40°C to +85°C
32 EDIP (0.740a)
DS1747-70IND+
DS1747P-70+
5.0
0°C to +70°C
34 PowerCap*
DS1747P+70
DS1747P-70IND+
5.0
-40°C to +85°C
34 PowerCap*
DS1747P+70 IND
DS1747W-120+
3.3
0°C to +70°C
32 EDIP (0.740a)
DS1747W-120+
DS1747W-120IND+
3.3
-40°C to +85°C
32 EDIP (0.740a)
DS1747W-120IND+
DS1747WP-120+
3.3
0°C to +70°C
34 PowerCap*
DS1747WP+120
DS1747WP-120IND+
3.3
-40°C to +85°C
34 PowerCap*
DS1747WP+120 IND
+Denotes a lead(Pb)-free/RoHS-compliant package.
*DS9034PCX+ or DS9034I-PCX+ required (must be ordered separately).
A “+” indicates lead(Pb)-free. The top mark will include a “+” symbol on lead(Pb)-free devices.
DESCRIPTION
The DS1747 is a full-function, year-2000-compliant (Y2KC), real-time clock/calendar (RTC) and
512k x 8 nonvolatile static RAM. User access to all registers within the DS1747 is accomplished with a
byte-wide interface as shown in Figure 1. The RTC information and control bits reside in the eight
uppermost RAM locations. The RTC registers contain century, year, month, date, day, hours, minutes,
and seconds data in 24-hour binary-coded decimal (BCD) format. Corrections for the date of each month
and leap year are made automatically. The RTC clock registers are double buffered to avoid access of
incorrect data that can occur during clock update cycles. The double-buffered system also prevents time
loss as the timekeeping countdown continues unabated by access to time register data. The DS1747 also
contains its own power-fail circuitry that deselects the device when the VCC supply is in an out-of-
tolerance condition. This feature prevents loss of data from unpredictable system operation brought on
by low VCC as errant access and update cycles are avoided.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1747-70+ | 功能描述:实时时钟 Timekeeping NV 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 |
| DS1747-70IND | 功能描述:实时时钟 Timekeeping NV 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 |
| DS1747-70IND+ | 功能描述:实时时钟 Timekeeping NV 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 |
| DS1747-70IND-W | 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 |
| DS1747-DS1747P | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Y2K-Compliant, Nonvolatile Timekeeping RAMs |
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