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参数资料
| 型号： | DS2417X/T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/15页 |
| 文件大小： | 0K |
| 描述： | IC TIMECHIP W/INTRPT 1WIRE CSP |
| 标准包装： | 10,000 |
| 类型： | 二进制计数器 |
| 特点： | 唯一 ID |
| 时间格式： | 二进制 |
| 数据格式： | 二进制 |
| 接口： | 1 线 串行 |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-XBGA，FCBGA |
| 供应商设备封装： | 6-覆晶（2.82x2.54） |
| 包装： | 带卷 (TR) |
DS2417
1-WIRE CRC GENERATOR Figure 4
Polynomial = X8 + X5 + X4 + 1
4 of 15
R
X2
X1
X0
X8
X7
X6
X5
X4
X3
8TH
STAGE
7TH
STAGE
6TH
STAGE
S
2ND
STAGE
3RD
STAGE
4TH
STAGE
5TH
STAGE
1ST
STAGE
INPUT DATA
TIMEKEEPING
A 32.768kHz crystal oscillator is used as the time base for the real-time clock counter. The oscillator can
be turned on or off under software control. The oscillator must be on for the real-time clock to function.
The real-time clock counter is double buffered. This allows the master to read time without the data
changing while it is being read. To accomplish this, a snapshot of the counter data is transferred to a
read/write buffer, which the user accesses.
DEVICE CONTROL BYTE
The DS2417 can generate interrupt pulses to trigger activities that have to occur at regular intervals. The
selection of this interval and the on/off control of the 32.768kHz crystal oscillator are done through the
device control byte. This byte can be read and written through the Clock Function commands.
Device Control Byte
7
6
5
4
3
2
1
0
IE
IS2
IS1
IS0
OSC OSC
0
Bit 0 - 1
0
No function
Bits 0 and 1 are hard-wired to read all 0’s.
Bit 2 - 3 OSC Oscillator Enable/Disable
These bits control/report whether the 32.768kHz crystal oscillator is running. If the oscillator is running,
both OSC bits will read 1. If the oscillator is turned off these bits will all read 0. When writing the
device control byte both occurrences of the OSC bit should have identical data. Otherwise, the value in
bit address 3 (bold) takes precedence.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2421FP000 | 制造商:Thomas & Betts 功能描述:200A,CON,3P4W,MG,421,3P440V |
| DS2421FR000 | 制造商:Thomas & Betts 功能描述:200A,REC,3P4W,MG,421,3P440V |
| DS2421FRA00 | 制造商:Thomas & Betts 功能描述:200A,REC,3P4W,MG,421,AGL,3P440V |
| DS2421FRAB0 | 制造商:Thomas & Betts 功能描述:200A,REC,3P4W,MG,421,AB0,3P440V |
| DS2421FRABK | 制造商:Thomas & Betts 功能描述:200A,REC,3P4W,MG,421,ABK,3P440V |
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