2.1 程序存储器 ROM(MTP) ......................................................................................................... 9 2.2 用户数据存储器（ RAM ） ................................................................................................... 10 2.3 特殊寄存器（ SFR ） ........................................................................................................... 11 2.4 CPU 内核常用 SFR （ PC/ACC/SP/IAP0/MP0/STATUS ） ................................................... 14 2.4.1 程序计数器 PC .............................................................................................................. 14 2.4.2 累加器 ACC .................................................................................................................. 14 2.4.3 堆栈指针 SP .................................................................................................................. 14 2.4.4 间接寻址寄存器 IAR0 、 MP0 ........................................................................................ 15 2.4.5 程序状态寄存器 STATUS ............................................................................................. 16