MC9S08QD2MPS FREESCALE [Freescale Semiconductor, Inc], MC9S08QD2MPS Datasheet - Page 65
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MC9S08QD2MPS
Manufacturer Part Number
MC9S08QD2MPS
Description
8-Bit HCS08 Central Processor Unit (CPU)
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC9S08QD2MPS.pdf
(202 pages)
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5.8.7
This high-page register contains status and control bits for the RTI.
Freescale Semiconductor
RTICLKS
Reset:
Reset:
RTIACK
ID[7:0]
Field
Field
RTIE
RTIS
RTIF
7:0
2:0
7
6
5
4
W
W
R
R
System Real-Time Interrupt Status and Control Register (SRTISC)
RTIF
ID7
Part Identification Number — Each derivative in the HCS08 family has a unique identification number. The
MC9S08QD4 series is hard coded to the value 0x011. 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 32 kHz ICS clock.
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
0
0
7
7
= Unimplemented or Reserved
Figure 5-8. System Device Identification Register — Low (SDIDL)
= Unimplemented or Reserved
Figure 5-9. System RTI Status and Control Register (SRTISC)
RTIACK
ID6
0
0
0
6
6
Table 5-10. SRTISC Register Field Descriptions
Table 5-9. SDIDL Register Field Descriptions
MC9S08QD4 Series MCU Data Sheet, Rev. 3
RTICLKS
ID5
0
0
5
5
RTIE
ID4
0
0
4
4
Description
Description
Chapter 5 Resets, Interrupts, and General System Control
ID3
3
1
3
0
0
Table
ID2
0
0
2
2
5-8.
RTIS
ID1
0
0
1
1
Table 5-11
ID0
1
0
0
0
65
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