參數(shù)資料
型號： MC68HC05E16CFU
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 16256 bytes of user ROM, 320bytes of EPROM and 352 bytes of RAM
中文描述： 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP64
封裝： QFP-64
文件頁數(shù)： 51/96頁
文件大小： 3045K
代理商： MC68HC05E16CFU
MC68HC05SR3
Freescale
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 MC68HC05SR3.
8.1
Registers
The MCU contains five 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
53
05SR3.Book Page 1 Thursday, August 4, 2005 1:08 PM
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