MC9RS08KA1 FREESCALE [Freescale Semiconductor, Inc], MC9RS08KA1 Datasheet - Page 41

• Manufacturer Part Number: MC9RS08KA1
• Description: RS08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

5.8.4
This high page register contains status and control bits for the RTI.
Freescale Semiconductor
RTICLKS
Reset:
Reset:
REV[3:0]
RTIACK
ID[11:8]
ID[7:0]
Field
Field
Field
RTIF
7:4
3:0
7:0
7
6
5
W
W
R
R
System Real-Time Interrupt Status and Control Register (SRTISC)
RTIF
Revision Number — The high-order 4 bits of address SDIDH are hard coded to reflect the current mask set
revision number (0–F).
Part Identification Number — Each derivative in the RS08 Family has a unique identification number. The
MC9RS08KA2 Series is hard coded to the value $0800. See also ID bits in
ID7
Part Identification Number — Each derivative in the RS08 Family has a unique identification number. The
MC9RS08KA2 Series is hard coded to the value $0800. See also ID bits in
Real-Time Interrupt Flag — This read-only status bit indicates the periodic wakeup timer has timed out.
0 Periodic wakeup timer not timed out.
1 Periodic wakeup timer timed out.
Real-Time Interrupt Acknowledge — This write-only bit is used to acknowledge real-time interrupt request
(write 1 to clear RTIF). Writing 0 has no meaning or effect. Reads always return 0.
Real-Time Interrupt Clock Select — This read/write bit selects the clock source for the real-time interrupt.
0 Real-time interrupt request clock source is internal 1-kHz oscillator.
1 Real-time interrupt request clock source is internal trimmed 32-kHz oscillator (ICS module) and is divided by
0
0
7
7
32 in RTI logic to produce a trimmed 1-kHz clock source for RTI counter.
= Unimplemented or Reserved
Figure 5-4. System Device Identification Register — Low (SDIDL)
= Unimplemented or Reserved
Figure 5-5. System RTI Status and Control Register (SRTISC)
RTIACK
ID6
0
0
0
6
6
Table 5-6. SRTISC Register Field Descriptions
Table 5-4. SDIDH Register Field Descriptions
Table 5-5. SDIDL Register Field Descriptions
RTICLKS
MC9RS08KA2 Series Data Sheet, Rev. 3
ID5
0
0
5
5
RTIE
ID4
0
0
4
4
Description
Description
Description
Chapter 5 Resets, Interrupts, and General System Control
ID3
3
0
3
0
0
ID2
0
0
2
2
Figure
Figure
5-4.
5-3.
RTIS
ID1
0
0
1
1
ID0
0
0
0
0
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