MC68HC08AZ32A Datasheet, PDF (29/312 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Chapter 2
Memory
2.1 Introduction
The CPU08 can address 64 Kbytes of memory space. The memory map includes:
• 1024 bytes of RAM
• 32,256 bytes of user ROM
• 512 bytes of EEPROM
• 52 bytes of user-defined vectors
• 256 bytes of monitor ROM
The following definitions apply to the memory map representation of reserved and unimplemented
locations.
• Reserved — Accessing a reserved location can have unpredictable effects on MCU operation.
• Unimplemented — Accessing an unimplemented location can cause an illegal address reset
(within the constraints as outlined in Chapter 15 System Integration Module (SIM)).
$0000
↓
$004F
$0050
↓
$044F
$0450
↓
$04FF
$0500
↓
$057F
$0580
↓
$07FF
$0800
↓
$09FF
$0A00
↓
$7FFF
I/O REGISTERS (80 BYTES)
RAM (1024 BYTES)
UNIMPLEMENTED (176 BYTES)
CAN CONTROL AND MESSAGE BUFFERS (128 BYTES)
UNIMPLEMENTED (640 BYTES)
EEPROM (512 BYTES)
UNIMPLEMENTED (30,108 BYTES)
Figure 2-1. MC68HC08AZ32A Memory Map (Sheet 1 of 2)
MC68HC08AZ32A Data Sheet, Rev. 2
Freescale Semiconductor
29