參數(shù)資料
型號(hào)： DMC73C168
英文描述： 8Bit Single Chip Microcontroller
中文描述： 8位單芯片微控制器
文件頁(yè)數(shù)： 16/90頁(yè)
文件大小： 742K
代理商： DMC73C168
16
8Bit Single Chip Microcontroller
DMC73C167
4. ARCHITECTURE
4.1 Overview
The DMC73C167 has a maximum memory address space of 16 kbytes on-chip ROM and
only a single-chip mode. On-chip memory spaces are configured as shown if Figure 4-1
below. In the section that follow, the register file(RF) and the peripheral file(PF) are described
along with three important registers in the CPU : the stack pointer(SP), the status register
(ST), and the program counter(PC).
Figure 4-1. DMC73C167 Memory Maps
Memory address
0000h
Register File (RF)
00FFh
0100h
Peripheral File (PF)
01FFh
0200h
Not Available
C005h
C006h
16Kbytes ROM
FFFFh
4.2 Register File (RF)
The 256-byte on-chip RAM resides in locations 0000h to 00FFh of the DMC73C167's
address space and is called the register file (RF). The RAM is treated as a register by much
of the instruction set and is numbered R0-R255. The first two registers, R0 and R1, are also
called the A and B registers, respectively. Several instructions specify A or B as either the
source or destination register. For example, STSP stores the contents of the stack pointer
(SP) in the B register. Except where stated otherwise, any register in the register file can be
addressed as an 8-bit source or destination register. The stack is also located in the register
file. Refer to Section 4.4 for information regarding the initialization of the stack pointer and
stack definition in the register file.
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