Specification :

EM78P451 (hereinafter referred to as 451) for YiLong electronic product of 8 - bit microprocessor, with low voltage, quick speed and a burn (OTP) characteristics, its core adopted the is reduced instruction set (RISC) structure. In addition, 451 relatively special is having SPI (Peripheral interfaces with) *, for use in the Serial users is very convenient. In 451, each instruction length for 13 bits are fixed in 13 bits of information, also includes the computational code (op - code) and computation yuan (operand), this is RISC architectures features provide instructions in 451 concentrated, can find every instructions are only occupied a program memory cell, also is the 13 bits. The program memory in 451 through internal 12 yuan width (a11-111 ~ 118) the program counter ~ A0) to addressing