參數(shù)資料
型號: MC68HC05J3CDW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO20
封裝: PLASTIC, SOIC-20
文件頁數(shù): 55/92頁
文件大?。?/td> 912K
代理商: MC68HC05J3CDW
MC68HC05J3
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 MC68HC05J3.
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.
Figure 8-1 Programming model
Figure 8-2 Stacking order
Accumulator
Index register
Program counter
Stack pointer
Condition code register
Carry / borrow
Zero
Negative
Interrupt mask
Half carry
7
0
7
0
15
7
0
15
7
0
0 0 0 0 0 0 0 1 1
7
0
1 1 1 H I N Z C
Condition code register
Accumulator
Index register
Program counter high
Program counter low
7
0
Stack
Unstack
Decreasing
memory
address
Increasing
memory
address
Interr
upt
Retur
n
TPG
56
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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