DS2401芯片解密/DS2431/DS28E01等加密芯片破解专业服务商，开云登录入口官网 ，目前已经成功破解了多款应用于医疗，工控，国防安全等领域的Dallas芯片。
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Dallas半导体公司设计、制造和销售广泛的混合信号专用半导体。该公司结合了专有的晶圆厂和电路技术，产品丰富。服务的市场包括宽带电信、无线手机、蜂窝基站、安全互联网通信、网络、服务器、数据存储和各种工业设备。Dallas达拉斯半导体公司1984年成立,总部位于美国德克萨斯州,晶片工厂位于德州达拉斯城。Dallas达拉斯目前公司的产品主要集中于三个战略方向:1.混合信号产品:包括NVSRAM、实时时钟、CPU监控电路、延迟线、数字电位器、热传感器、温度补偿晶体振荡器(TCXO)等;2.通讯:发展一系列符合现有各种通讯协议的高级程度芯片。3.Wire&NetworkComputing:如微控制器产品。
以下是DALLAS系列部分解密型号供参考查找：
DS1258AB　DS2401　DS1258Y　DS2433　DS2431　DS1213B　DS1213C　DS1388　DS1220AD　DS1845　DS1220　DS1846　DS1225　DS1230　DS3902　DS1235　DS3906　DS1243　DS3930　DS1244　DS1245. DS28E01等
以下是DS2401芯片特性：
DESCRIPTION
The DS2401 enhanced Silicon Serial Number is a low-cost, electronic registration number that provides an absolutely unique identity which can be determined with a minimal electronic interface, typically a single port pin of a microcontroller. The DS2401 consists of a factory-lasered, 64-bit ROM that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit Family Code (01h). Data is transferred serially via the 1-Wire protocol which requires only a single data lead and a ground return. Power for reading and writing the device is derived from the data line itself with no need for an external power source. The DS2401 is an upgrade to the DS2400. The DS2401 is fully reverse-compatible with the DS2400 but provides the additional multi-drop capability that enables many devices to reside on a single data line. The familiar TO-92, SOT-223 or TSOC package provides a compact enclosure that allows standard assembly equipment to handle the device easily.
OPERATION
The DS2401’s internal ROM is accessed via a single data line. The 48-bit serial number, 8-bit family code and 8-bit CRC are retrieved using the Dallas 1-Wire protocol. This protocol defines bus transactions in terms of the bus state during specified time slots that are initiated on the falling edge of sync pulses from the bus master. All data is read and written least significant bit first.
1-WIRE BUS SYSTEM
The 1-Wire bus is a system which has a single bus master system and one or more slaves. In all instances, the DS2401 is a slave device. The bus master is typically a microcontroller. The discussion of this bus system is broken down into three topics: hardware configuration, transaction sequence, and 1-Wire signaling (signal type and timing). For a more detailed protocol description, refer to Chapter 4 of the Book of DS19xx iButton Standards.
Hardware Configuration
The 1-Wire bus has only a single line by definition; it is important that each device on the bus be able to drive it at the appropriate time. To facilitate this, each device attached to the 1-Wire bus must have an open drain connection or 3-state outputs. The DS2401 is an open drain part with an internal circuit equivalent to that shown in Figure 2. The bus master can be the same equivalent circuit. If a bidirectional pin is not available, separate output and input pins can be tied together. The bus master requires a pullup resistor at the master end of the bus, with the bus master circuit equivalent to the one shown in Figure 3. The value of the pullup resistor should be approximately 5 k for short line lengths. A multidrop bus consists of a 1-Wire bus with multiple slaves attached. The 1-Wire bus has a maximum data rate of 16.3 kbits per second.
The idle state for the 1-Wire bus is high. If, for any reason, a transaction needs to be suspended, the bus MUST be left in the idle state if the transaction is to resume. If this does not occur and the bus is left low for more than 120 s, one or more of the devices on the bus may be reset.
DS2401 MEMORY MAP Figure 1
8-Bit CRC Code 48-Bit Serial Number 8-Bit Family Code (01h)
DS2401 DS23431 DS28E01等加密芯片破解联系电话。13717069599