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參數(shù)資料
| 型號(hào)： | MC68HC05LJ5P |
| 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, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁(yè)數(shù)： | 16/85頁(yè) |
| 文件大?。?/td> | 899K |
| 代理商： | MC68HC05LJ5P |
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November 10, 1998
GENERAL RELEASE SPECIFICATION
MC68HC05LJ5
CENTRAL PROCESSING UNIT
MOTOROLA
REV 1
3-1
SECTION 3
CENTRAL PROCESSING UNIT
The MC68HC05LJ5 has an 4k-bytes memory map. The stack has only 64 bytes.
Therefore, the stack pointer has been reduced to only 6 bits and will only
decrement down to $00C0 and then wrap-around to $00FF. All other instructions
and registers behave as described in this chapter.
3.1
REGISTERS
The MCU contains ve registers which are hard-wired within the CPU and are not
part of the memory map. These ve registers are shown in Figure 3-1 and are
described in the following paragraphs.
Figure 3-1. MC68HC05 Programming Model
CONDITION CODE REGISTER
I
ACCUMULATOR
60
A
INDEX REGISTER
71
X
4
52
3
STACK POINTER
SP
14
8
15
9
12
13
10
11
PC
CC
111
11
0
PROGRAM COUNTER
H
NZC
HALF-CARRY BIT (FROM BIT 3)
INTERRUPT MASK
NEGATIVE BIT
ZERO BIT
CARRY BIT
F
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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