参数资料
型号: M68HC05M68H
厂商: Motorola, Inc.
英文描述: HCMOS Microcontroller Unit
中文描述: HCMOS微控制器
文件页数: 27/130页
文件大小: 1541K
代理商: M68HC05M68H
MC68HC705P6A
Rev. 2.0
Advance Information
MOTOROLA
Memory
27
Advance Information
MC68HC705P6A
Section 2. Memory
2.1 Contents
2.2
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
2.3
User Mode Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
2.4
Bootloader Mode Memory Map . . . . . . . . . . . . . . . . . . . . . . . .28
2.5
Input/Output and Control Registers . . . . . . . . . . . . . . . . . . . . .29
2.6
RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
2.7
EPROM/ROM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
2.8
Mask Option Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
2.9
Computer Operating Properly (COP) Clear Register . . . . . . . .34
2.2 Introduction
The MC68HC705P6A utilizes 13 address lines to access an internal
memory space covering 8 Kbytes. This memory space is divided into
I/O, RAM, ROM, and EPROM areas.
2.3 User Mode Memory Map
When the MC68HC705P6A is in the user mode, the 32 bytes of I/O,
176 bytes of RAM, 4608 bytes of user EPROM, 48 bytes of user page
zero EPROM, 239 bytes of bootloader ROM, and 16 bytes of user
vectors EPROM are all active as shown in
Figure 2-1
.
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