Freescale Semiconductor, Inc.
Ge ne ra l Re le a se Sp e c ific a tion — MC68HC705P6A
Se c tion 2. Me m ory
2.1 Conte nts
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
User Mode Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Bootloader Mode Memory Map . . . . . . . . . . . . . . . . . . . . . . . .24
Input/Output and Control Registers . . . . . . . . . . . . . . . . . . . . .25
RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
EPROM/ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Mask Option Register (MOR) $1EFF–$1F00 . . . . . . . . . . . . . .28
COP Clear Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
2.2 Introd uc tion
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 Use r Mod e Me m ory Ma p
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.
MC68HC705P6A — Rev. 1.0
General Release Specification
Memory
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