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DMC73C167 Datasheet(PDF) 16 Page - Daewoo Semiconductor |
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DMC73C167 Datasheet(HTML) 16 Page - Daewoo Semiconductor |
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16 / 90 page  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. £Ä£Á£Å£×£Ï£Ï DAEWOO ELECTRONICS CO., LTD. |
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