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参数资料
| 型号： | DS1337U/T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/16页 |
| 文件大小： | 0K |
| 描述： | IC RTC SERIAL 2WIRE LP 8-USOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 3,000 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，方波输出，涓流充电器 |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | I²C，2 线串口 |
| 电源电压： | 1.8 V ~ 5.5 V |
| 电压 - 电源，电池： | 1.3 V ~ 1.8 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (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)
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1338 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:I2C RTC with 56-Byte NV RAM |
| DS1338_08 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:I2C RTC with 56-Byte NV RAM |
| DS1338_11 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:I2C RTC with 56-Byte NV RAM |
| DS1338_1203 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:I2C RTC with 56-Byte NV RAM |
| DS1338C-18 | 功能描述:实时时钟 I2C Serial RTC w/56 Byte 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 |
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