參數(shù)資料
型號(hào): MC68HC05L1B
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP56
封裝: SDIP-56
文件頁數(shù): 61/102頁
文件大?。?/td> 632K
代理商: MC68HC05L1B
MC68HC05L1
MOTOROLA
8-1
CPU CORE AND INSTRUCTION SET
8
CPU CORE AND INSTRUCTION SET
This section provides a description of the CPU core registers, the instruction set and the
addressing modes of the MC68HC05L1.
8.1
Registers
The MCU contains ve registers, as shown in the programming model of Figure 8-1. The interrupt
stacking order is shown in Figure 8-2.
8.1.1
Accumulator (A)
The accumulator is a general purpose 8-bit register used to hold operands and results of
arithmetic calculations or data manipulations.
Figure 8-1 Programming model
Accumulator
Index register
Program counter
Stack pointer
Condition code register
Carry / borrow
Zero
Negative
Interrupt mask
Half carry
70
15
7
0
15
7
0
0 0 0 0 0 0 0 1 1
70
1 1 1 H I N Z C
TPG
59
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