2C Serial Real-Time Clock CLOCK ACCURACY The accuracy of the clock is dependent upon the accur" />
參數(shù)資料
型號: DS1337
廠商: Maxim Integrated Products
文件頁數(shù): 14/16頁
文件大?。?/td> 0K
描述: IC RTC SERIAL 2WIRE LP 8-DIP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 50
類型: 時鐘/日歷
特點: 警報器,閏年,方波輸出,涓流充電器
時間格式: HH:MM:SS(12/24 小時)
數(shù)據(jù)格式: YY-MM-DD-dd
接口: I²C,2 線串口
電源電壓: 1.8 V ~ 5.5 V
電壓 - 電源,電池: 1.3 V ~ 1.8 V
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 8-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 8-PDIP
包裝: 管件
DS1337 I
2C Serial Real-Time Clock
CLOCK ACCURACY
The accuracy of the clock is dependent upon the accuracy of the crystal and the accuracy of the match between
the capacitive load of the oscillator circuit and the capacitive load for which the crystal was trimmed. Crystal
frequency drift caused by temperature shifts creates additional error. External circuit noise coupled into the
oscillator circuit can result in the clock running fast. Figure 1 shows a typical PC board layout for isolating the
crystal and oscillator from noise. Refer to
Application Note 58: Crystal Considerations with Dallas Real-Time
Clocks for detailed information.
Figure 1. Typical PC Board Layout for Crystal
LOCAL GROUND PLANE (LAYER 2)
X1
CRYSTAL
X2
GND
NOTE: AVOID ROUTING SIGNALS IN THE CROSSHATCHED
AREA (UPPER LEFT-HAND QUADRANT) OF THE PACKAGE
UNLESS THERE IS A GROUND PLANE BETWEEN THE SIGNAL
LINE AND THE PACKAGE.
DS1337C ONLY
The DS1337C integrates a standard 32,768Hz crystal in the package. Typical accuracy at nominal VCC and +25°C
is approximately +10ppm. Refer to
Application Note 58 for information about crystal accuracy vs. temperature.
OPERATING MODES
The amount of current consumed by the DS1337 is determined, in part, by the I
2C interface and oscillator
operation. The following table shows the relationship between the operating mode and the corresponding ICC
parameter.
Operating Mode
VCC
Power
I
2C Interface Active
1.8V ≤ VCC ≤ 5.5V
ICC Active (ICCA)
I
2C Interface Inactive
1.8V ≤ VCC ≤ 5.5V
ICC Standby (ICCS)
I
2C Interface Inactive
1.3V ≤ VCC ≤ 1.8V
Timekeeping (ICCTOSC)
I
2C Interface Inactive
Oscillator Disabled
1.3V ≤ VCC ≤ 1.8V
Data Retention
(ICCTDDR)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1337_06 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C Serial Real-Time Clock
DS1337_09 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C Serial Real-Time Clock
DS1337+ 功能描述:實時時鐘 I2C Serial RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
DS1337+ 制造商:Maxim Integrated Products 功能描述:SEMICONDUCTOR ((NW))
DS1337C 功能描述:實時時鐘 I2C Serial RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube