mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 67

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

4.1 Contents
4.2 Introduction
4.3 Functional Description
MC68HC08QA24
Freescale Semiconductor
Technical Data — MC68HC08QA24
4.2
4.3
This section describes the 24,064 bytes of user read-only memory
(ROM), 224 bytes of monitor ROM, and 36 bytes of user vectors.
The user ROM consists of 24,064 bytes of ROM from addresses
$A000–$FDFF. The monitor ROM is located from $FE20–$FEFF. See
Figure 2-1. Memory
Twenty of the user vectors, $FFD8–$FFFF, are dedicated to
user-defined reset and interrupt vectors.
Security has been incorporated into the MC68HC08QA24 to prevent
external viewing of the ROM contents. This feature ensures that
customer-developed software remains proprietary.
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or
copying the ROM difficult for unauthorized users.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Section 4. Read-Only Memory (ROM)
Read-Only Memory (ROM)
Map.
(1)
Technical Data
65