MC68HC08AZ60 Datasheet, PDF (131/452 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
Mask Options
Mask Options
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Mask Option Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Introduction
This section describes use of mask options by custom-masked ROMs
and the mask option register in the MC68HC08AZ60.
Functional Description
The mask options are hard-wired connections, specified at the same
time as the ROM code, which allow the user to customise the MCU. The
options control the enable or disable ability of the following functions:
• ROM security¹
• Resets caused by the LVI module
• Power to the LVI module
• Stop mode recovery time (32 CGMXCLK cycles or 4096
CGMXCLK cycles)
• COP timeout period (2¹⁸ – 2⁴ CGMXCLK cycles or 2¹³ – 2⁴
CGMXCLK cycles)
1-mops
MOTOROLA
1. No security feature is absolutely secure. However, Motoroola’s strategy is to make reading or
copying the ROM data dificult for unauthorized users.
MC68HC08AZ60 — Rev 1.0
Mask Options
131
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