参数资料
型号: MC68HC05BS8FB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.2 MHz, MICROCONTROLLER, PQFP44
封装: PLASTIC, QFP-44
文件页数: 117/128页
文件大小: 9691K
代理商: MC68HC05BS8FB
MC68HC05BS8
CPU CORE AND INSTRUCTION SET
10
CPU CORE AND INSTRUCTION SET
This section provides a description of the CPU core registers, the instruction set and the
addressing modes of the MC68HC05BS8.
10.1
Registers
The MCU contains ve registers, as shown in the programming model of Figure 10-1. The interrupt
stacking order is shown in Figure 10-2.
10.1.1
Accumulator (A)
The accumulator is a general purpose 8-bit register used to hold operands and results of
arithmetic calculations or data manipulations.
Figure 10-1 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
0
TPG
87
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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