W78LE812单片机解密

　　我们仅针对W78LE812单片机的主要性能特征进行简单介绍，供广大客户参考借鉴，如果客户有W78LE812单片机解密等华邦芯片解密需求.
　　The W78LE812 is an 8-bit microcontroller which can accommodate a wide range of supply voltages with low power consumption. The instruction set for the W78LE812 is fully compatible with the standard 8051. The W78LE812 contains an 8K bytes MTP ROM (Multiple-Time Programmable ROM); a 256 bytes RAM; four 8-bit bi-directional and bit-addressable I/O ports; an additional 6-bit I/O port P4; three 16-bit timer/counters; a hardware watchdog timer and a serial port. These peripherals are supported by a fourteen sources two-level interrupt capability. To facilitate programming and verification, the MTP-ROM inside the W78LE812 allows the program memory to be programmed and read electronically. Once the code is confirmed, the user can protect the code for security.
　　The W78LE812 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.
　　W78LE812 FEATURES
　　Fully static design 8-bit CMOS microcontroller
　　Wide supply voltage of 2.4V to 5.5V
　　256 bytes of on-chip scratchpad RAM
　　8 KB electrically erasable/programmable MTP-ROM
　　64 KB program memory address space
　　64 KB data memory address space
　　Four 8-bit bi-directional ports
　　Three 16-bit timer/counters
　　Timer 2 Clock-out
　　One full duplex serial port(UART)
　　Watchdog Timer
　　Direct LED drive outputs
　　Fourteen sources, two-level interrupt capability
　　Wake-up via external interrupts at Port 1
　　EMI reduction mode
　　Built-in power management
　　Code protection mechanism
　　Packages:
　　- DIP 40: W78LE812-24
　　- PLCC 44: W78LE812P-24
　　- PQFP 44: W78LE812F-24
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