mc68hc08ln56 Freescale Semiconductor, Inc, mc68hc08ln56 Datasheet - Page 217

• Manufacturer Part Number: mc68hc08ln56
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 19
Configuration Register (CONFIG)
19.1 Introduction
This section describes the configuration register (CONFIG). The configuration register enables or
disables these options:
19.2 Functional Description
The configuration register is used in the initialization of various options. The configuration register can be
written once after each reset. All of the configuration register bits are cleared during reset. Since the
various options affect the operation of the MCU, it is recommended that this register be written
immediately after reset. The configuration register is located at $001F. For compatibility, a write to the
ROM version of the MCU at this location will have no effect. The configuration register may be read at any
time.
LVISTOP — LVI Enable in Stop Mode Bit
Freescale Semiconductor
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When the LVIPWR bit is set, LVISTOP enables the LVI to operated during stop mode.
1 = LVI not disabled during stop instruction
0 = LVI disabled during stop instruction
Resets caused by the low voltage inhibit module (LVI)
Power to the LVI module
Stop mode recovery time (32 CGMXCLK cycles or 4096 CGMXCLK cycles)
STOP instruction
Computer operating properly module (COP)
CONFIG
Reset:
$001F
Read:
Write:
The CONFIG module is known as an MOR (mask option register) on a
ROM device. For references in the documentation which refer to the MOR
(mask option register), the CONFIG would be applicable for the
EPROM/OTPROM version of the device.
To meet the stop mode I
MC68HC08LN56 • MC68HC708LN56 General Release Specification, Rev. 2.1
Bit 7
0
Figure 19-1. Configuration Register (CONFIG)
LVISTOP
6
0
LVIRST
DD
5
0
specification, LVISTOP must be 0.
LVIPWR
NOTE
NOTE
4
0
SSREC
3
0
2
0
STOP
1
0
COPD
Bit 0
0
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