MC68HC08AZ32A Datasheet, PDF (145/456 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Technical Data — MC68HC08AZ32A
Section 9. Mask Options
9.1 Contents
9.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
9.3 Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . .146
9.2 Introduction
This section describes the mask options and the mask option registers.
The mask options are hardwired connections specified at the same time
as the ROM code, which allow the user to customize the MCU. The
options control the enable or disable of the following functions:
• Resets caused by the LVI module
• Power to the LVI module
• Stop mode recovery time (32 CGMXCLK cycles or 4096
CGMXCLK cycles)
• ROM security⁽¹⁾
• STOP instruction
• Computer operating properly (COP) module enable
• EEPROM read protection⁽¹⁾
• COP time-out period
• EEPROM reference clock source
1. No security feature is absolutely secure. However, Motorola’s strategy is to make reading or
copying the ROM/EEPROM data difficult for unauthorized users
MC68HC08AZ32A — Rev 1.0
MOTOROLA
Mask Options
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Technical Data
145