MC9RS08KA2 Datasheet, PDF (42/132 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 5 Resets, Interrupts, and General System Control
Table 5-6. SRTISC Register Field Descriptions (continued)
Field
4
RTIE
2:0
RTIS
Description
Real-Time Interrupt Enable — This read-write bit enables real-time interrupts.
0 Real-time interrupts disabled.
1 Real-time interrupts enabled.
Real-Time Interrupt Delay Selects — These read/write bits select the period for the RTI. See Table 5-7.
Table 5-7. Real-Time Interrupt Period
RTIS
RTI Timeout¹
000
Disable RTI
001
8 ms
010
32 ms
011
64 ms
100
128 ms
101
256 ms
110
512 ms
111
1.024 s
1 _{Timeout values shown based on RTI clock source of 1 ms period. Consult}
electricals for tolerances of internal 1-kHz source, t_RTI (Table A-8) and the
internal 32-kHz from ICS (Table A-7).
NOTE
To power down the internal 1-kHz oscillator completely in MCU STOP
mode, RTIS bits must be selected to %000 and RTICLKS bit must be set
to 1.
MC9RS08KA2 Series Data Sheet, Rev. 2
42
Freescale Semiconductor