8051微控制器的指令可分为五个不同的组。这些组如下
数据传输组
算术组
逻辑组
计划处小组
位处理组
该位处理组也称为布尔变量操作。
像8085一样,某些指令具有两个操作数。第一个操作数是目标,第二个操作数是源。
在以下示例中,您将获得一些符号。表示法就像-
Rn = Any register from R0to R7 Ri = Either R0 or R1 d8 = Any 8-bit immediate data (00H to FFH) d16 = 16-bit immediate data a8 = 8-bit address bit = 8-bit address of bit which is bit addressable rel = 8-bit signed displacement. The range is -128 to 127. It is relative to the first byte of the instruction.