MC68HC705C4A单片机解密

MC68HC705C4A解密是世纪芯科技提供的MOTOROLA系列单片机解密典型型号，分析MOTOROLA（摩托罗拉）单片机的解密，首先要分析其加密原理。摩托罗拉单片机加密主要分两个层次，其中一个就是其存储器的加密熔丝，另一个是其内部软件加密位的保护。因为MOTOROLA单片机加密熔丝在设计上采用了深埋技术，在顶层无法暴露，这样就给解密带来难度，另外其加密熔丝间于存储器间隙间，这样对熔丝的操作将成为不可能。 

正是由于其加密技术的特殊性，传统的解密技术对摩托罗拉单片机没有办法解决。我们自己研究了软件解密方法，采用下载线和单片机连接，然后利用解密软件与单片机通讯，将单片机存储器里的数据下载到计算机内。所以我们可以快速安全的提供摩托罗拉单片机解密服务。

有MC68HC705C4A解密需求者请与世纪芯科技联系咨询解密详情，这里我们仅提供MC68HC705C4A单片机的基本介绍.

    关于MC68HC705C4A

　　The MC68HC705C4A is a member of the low-cost, high-performance M68HC05 Family of 8-bit microcontroller units (MCUs). The M68HC05 Family is based on the customer-specified integrated circuit (CSIC) design strategy. All MCUs in the family use the M68HC05 central processor unit (CPU) and are available with a variety of subsystems,memory sizes and types, and package types.

The MC68HC705C4A is similar to the MC68HC705C8A. The major differences are that the MC68HC705C4A has less RAM and ROM, no selectable memory configurations, no clock monitor reset function, and only one computer operating properly (COP) watchdog timer.

 

Features of the MC68HC705C4A include:

　　M68HC05 central processor unit (CPU)

　　On-chip oscillator with crystal/ceramic resonator

　　Memory-mapped input/output (I/O)

　　Computer operating properly (COP) watchdog timer

　　Selectable port B external interrupt capability

　　High current drive on pin C7 (PC7)

　　24 bidirectional I/O lines and 7 input-only lines

　　Serial communications interface (SCI) system

　　Serial peripheral interface (SPI) system

　　Bootstrap capability

　　Power-saving stop, wait, and data-retention modes

　　Single 3.0-volt to 5.5-volt supply (2-volt data-retention mode)

　　Fully static operation

　　Software-programmable external interrupt sensitivity