MC68HC08AB16A Datasheet, PDF (75/380 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Technical Data — MC68HC08AB16A
Section 6. Mask Options (MOR)
6.1 Contents
6.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
6.3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
6.4 Mask Option Register A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
6.5 Mask Option Register B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
6.6 EEPROM Timebase Divider Mask Option Registers . . . . . . . . 79
6.2 Introduction
This section describes the mask options and the mask option registers,
MORA, MORB, EEDIVHMOR, and EEDIVLMOR. Mask options are
hard-wired connections specified at the same time as the ROM code,
which allows the user to customize the MCU. These options enable or
disable the following functions:
• Low-voltage inhibit (LVI) in stop mode
• ROM security
• LVI reset
• LVI module power
• Stop mode recovery time (32 CGMXCLK cycles or 4096
CGMXCLK cycles)
• COP timeout period (2¹⁸ – 2⁴ or 2¹³ – 2⁴ CGMXCLK cycles)
• STOP instruction
• Computer operating properly module (COP)
• EEPROM reference clock source (CPU bus clock or CGMXCLK)
• EEPROM security
MC68HC08AB16A — Rev. 2.0
MOTOROLA
Mask Options (MOR)
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Technical Data
75