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參數(shù)資料
| 型號： | DS1337U/T&R |
| 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-USOP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 3,000 |
| 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： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 8-uMAX |
| 包裝： | 帶卷 (TR) |
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)
相關(guān)PDF資料 |
PDF描述 |
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| DS1337S/T&R | IC RTC SERIAL 2WIRE LP 8-SOIC |
| DS1342T+T&R | IC RTC I2C W/ALARM 6TDFN |
| DS1341T+T&R | IC RTC I2C W/ALARM 6TDFN |
| DS1337U+T&R | IC RTC SERIAL 2WIRE LP 8-USOP |
| VI-J4X-MZ | CONVERTER MOD DC/DC 5.2V 25W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1338 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:I2C RTC with 56-Byte NV RAM |
| DS1338_08 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C RTC with 56-Byte NV RAM |
| DS1338_11 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C RTC with 56-Byte NV RAM |
| DS1338_1203 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C RTC with 56-Byte NV RAM |
| DS1338C-18 | 功能描述:實時時鐘 I2C Serial RTC w/56 Byte NV RAM 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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