Freescale Semiconductor MC68HC08KH12 - Manual (Page 49)

MC68HC(7)08KH12 — Rev. 1.1 Advance Information
Freescale Semiconductor 49
Advance Information — MC68HC(7)08KH12
Section 5. Configuration Register (CONFIG)
5.1 Contents
5.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.2 Introduction
This section describes the configuration register (CONFIG). The
configuration register enables or disables the following options:
• Stop mode recovery time (32 CGMXCLK cycles or 4096
CGMXCLK cycles)
• STOP instruction
• Computer operating properly module (COP)
• COP reset period (COPRS), (2
13
–2
4
)
×
CGMXCLK or
(2
18
–2
4
)
×
CGMXCLK
5.3 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. The configuration register may be read at anytime.
This configuration register exists on both the MC68HC708KH12
(OTP part) and MC68HC08KH12 (ROM part).