mc9s08gt32a Freescale Semiconductor, Inc, mc9s08gt32a Datasheet - Page 70

• Manufacturer Part Number: mc9s08gt32a
• Description: Hcs08 Microcontrollers 8-bit Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

Chapter 5 Resets, Interrupts, and System Configuration
configured for low bandwidth operation (RANGE = 0). If active BDM mode is enabled in stop3, the
internal RTI clock is not available.
The SRTISC register includes a read-only status flag, a write-only acknowledge bit, and a 3-bit control
value (RTIS2:RTIS1:RTIS0) used to select one of seven RTI periods. The RTI has a local interrupt enable,
RTIE, to allow masking of the real-time interrupt. The module can be disabled by writing 0:0:0 to
RTIS2:RTIS1:RTIS0 in which case the clock source input is disabled and no interrupts will be generated.
See
Section 5.8.6, “System Real-Time Interrupt Status and Control Register
(SRTISC),”
for detailed
information about this register.
5.8
Reset, Interrupt, and System Control Registers and Control Bits
One 8-bit register in the direct page register space and eight 8-bit registers in the high-page register space
are related to reset and interrupt systems.
Refer to the direct-page register summary in
Chapter 4,
“Memory” of this data sheet for the absolute
address assignments for all registers. This section refers to registers and control bits only by their names.
A Freescale-provided equate or header file is used to translate these names into the appropriate absolute
addresses.
Some control bits in the SOPT and SPMSC2 registers are related to modes of operation. Although brief
descriptions of these bits are provided here, the related functions are discussed in greater detail in
Chapter 3, “Modes of
Operation.”
MC9S08GB60A Data Sheet, Rev. 1.02
70
Freescale Semiconductor