sc9s12hy64j0vllr Freescale Semiconductor, Inc, sc9s12hy64j0vllr Datasheet - Page 243

• Manufacturer Part Number: sc9s12hy64j0vllr
• Description: S12 Microcontrollers Mcu 16-bit Hcs12 Cisc 32kb Flash 5v Tray
• Manufacturer: Freescale Semiconductor, Inc

7.3.2.8
This register selects the time-out period for the Real Time Interrupt.
The clock source for the RTI is either IRCCLK or OSCCLK depending on the setting of the RTIOSCSEL
bit. In Stop Mode with PSTP=1 (Pseudo Stop Mode) and RTIOSCSEL=1 the RTI continues to run, else
the RTI counter halts in Stop Mode.
Read: Anytime
Write: Anytime
Freescale Semiconductor
0x003B
RTR[6:4]
RTR[3:0]
RTDEC
Reset
Field
6–4
3–0
7
W
R
RTDEC
Decimal or Binary Divider Select Bit — RTDEC selects decimal or binary based prescaler values.
0 Binary based divider value. See
1 Decimal based divider value. See
Real Time Interrupt Prescale Rate Select Bits — These bits select the prescale rate for the RTI. See
and
Real Time Interrupt Modulus Counter Select Bits — These bits select the modulus counter target value to
provide additional
CPMURTI register.
S12CPMU RTI Control Register (CPMURTI)
0
7
A write to this register starts the RTI time-out period. A change of the
RTIOSCSEL bit (writing a different value or loosing UPOSC status)
re-starts the RTI time-out period.
Table
7-10.
RTR6
Figure 7-11. S12CPMU RTI Control Register (CPMURTI)
0
6
granularity.Table 7-9
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Table 7-8. CPMURTI Field Descriptions
RTR5
0
5
Table 7-9
Table 7-10
S12 Clock, Reset and Power Management Unit (S12CPMU) Block Description
and
RTR4
Table 7-10
NOTE
0
4
Description
show all possible divide values selectable by the
RTR3
0
3
RTR2
0
2
RTR1
0
1
Table 7-9
RTR0
0
0
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