Freescale Semiconductor, Inc.
Me m ory
$0000
$001F
$0020
I/O REGISTERS
32 BYTES
USER RAM
224 BYTES
$00C0
$00FF
STACK RAM
64 BYTES
$00FF
$0100
$06FF
$0700
UNIMPLEMENTED
1536 BYTES
USER EPROM
6144 BYTES
$1EFF
$1F00
$1FEF
$1FF0
$1FFF
INTERNAL TEST ROM
240 BYTES
USER VECTORS
(EPROM) 16 BYTES
Figure 2-1. Memory Map
2.4 Inp ut/ Outp ut Re g iste rs
The first 32 addresses of the memory space, $0000–$001F, contain the
I/O registers section as summarized in Figure 2-2.
One I/O register is located outside the 32-byte I/O section, which is the
computer operating properly (COP) register mapped at $1FF0.
The assignment of each control, status, and data bit in the I/O register
space from $0000–$001F is given in Figure 2-3 and Figure 2-4.
General Release Specification
MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0
Memory
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