W78LE54解密

　　这里，我们仅以W78LE54芯片为例，针对其主要性能特征进行简单介绍.
　　The W78LE54 is an 8-bit microcontroller which can accommodate a wide supply voltage range withlow power consumption. The instruction set for the W78LE54 is fully compatible with the standard 8051. The W78LE54 contains an 16K bytes MTP ROM (Multiple-Time Programmable ROM); a 256 bytes RAM; four 8-bit bi-directional and bit-addressable I/O ports; an additional 4-bit I/O port P4; three 16-bit timer/counters; a hardware watchdog timer and a serial port. These peripherals are supported by eight sources two-level interrupt capability. To facilitate programming and verification, the MTPROM inside the W78LE54 allows the program memory to be programmed and read electronically. Once the code is confirmed, the user can protect the code for security.
　　The W78LE54 microcontroller has two power reduction modes, idle mode and power-down mode, both of which are software selectable. The idle mode turns off the processor clock but allows for continued peripheral operation. The power-down mode stops the crystal oscillator for minimum power consumption. The external clock can be stopped at any time and in any state without affecting the processor.
　　W78LE54 FEATURES
　　Fully static design 8-bit CMOS microcontroller
　　Wide supply voltage of 2.4V to 5.5V
　　256 bytes of on-chip scratchpad RAM
　　16 KB electrically erasable/programmable MTP-ROM
　　64 KB program memory address space
　　64 KB data memory address space
　　Four 8-bit bi-directional ports
　　One extra 4-bit bit-addressable I/O port, additional INT2 / INT3
　　(available on 44-pin PLCC/QFP package)
　　Three 16-bit timer/counters
　　One full duplex serial port(UART)
　　Watchdog Timer
　　Eight sources, two-level interrupt capability
　　EMI reduction mode
　　Built-in power management
　　Code protection mechanism
　　Packages:
　　- DIP 40: W78LE54-24
　　- PLCC 44: W78LE54P-24
　　- PQFP 44: W78LE54F-24
　　以上我们简单介绍了W78LE54单片机的主要性能特征，供广大客户参考借鉴。深圳科茂隆电子科技有限公司依靠长期以来在IC解密、单片机解密技术研究领域的丰富成果与实际解密经验积累，针对每一颗芯片，都致力于为客户提供最值得信赖的解密技术支持与服务。
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