mc68hc705k1 Freescale Semiconductor, Inc, mc68hc705k1 Datasheet - Page 25

• Manufacturer Part Number: mc68hc705k1
• Description: Hcmos Microcontroller Unit
• Manufacturer: Freescale Semiconductor, Inc

2.1 Contents
2.2 Introduction
2.3 Memory Map
MC68HC705K1 — Rev. 2.0
Technical Data — MC68HC705K1
2.2
2.3
2.4
2.5
2.6
2.7
This section describes the organization of the on-chip memory.
The central processor unit (CPU) can address 1 Kbyte of memory space.
The program counter typically advances one address at a time through
the memory, reading the program instructions and data. The erasable,
programmable read-only memory (EPROM) portion of memory holds
the program instructions, fixed data, user-defined vectors, and interrupt
service routines. The random-access memory (RAM) portion of memory
holds variable data. Input/output (I/O) registers are memory-mapped so
that the CPU can access their locations in the same way that it accesses
all other memory locations.
Figure 2-1
Figure 2-2
section.
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Memory Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Input/Output Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Random-Access Memory (RAM) . . . . . . . . . . . . . . . . . . . . . . .26
EPROM/OTPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Personality EPROM/OTPROM . . . . . . . . . . . . . . . . . . . . . . . . .30
is a memory map of the microcontroller unit (MCU). Refer to
for a more detailed memory map of the 32-byte I/O register
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Memory
Section 2. Memory
Technical Data