MC68HC912D60 Datasheet, PDF (174/432 Pages) Freescale Semiconductor, Inc – M68HC12 Microcontrollers

Clock Functions
Freescale Semiconductor, Inc.
12.12 Clock Function Registers
All register addresses shown reflect the reset state. Registers may be
mapped to any 2K byte space.
Bit 7
6
5
4
RTIE
RSWAI RSBCK Reserved
RESET:
0
0
0
0
RTICTL — Real-Time Interrupt Control Register
3
RTBYP
0
2
RTR2
0
1
RTR1
0
Bit 0
RTR0
0
$0014
RTIE — Real Time Interrupt Enable
Read and write anytime.
0 = Interrupt requests from RTI are disabled.
1 = Interrupt will be requested whenever RTIF is set.
RSWAI — RTI and COP Stop While in Wait
Write once in normal modes, anytime in special modes. Read
anytime.
0 = Allows the RTI and COP to continue running in wait.
1 = Disables both the RTI and COP whenever the part goes into
Wait.
RSBCK — RTI and COP Stop While in Background Debug Mode
Write once in normal modes, anytime in special modes. Read
anytime.
0 = Allows the RTI and COP to continue running while in
background mode.
1 = Disables both the RTI and COP when the part is in background
mode. This is useful for emulation.
RTBYP — Real Time Interrupt Divider Chain Bypass
Write not allowed in normal modes, anytime in special modes. Read
anytime.
0 = Divider chain functions normally.
1 = Divider chain is bypassed, allows faster testing (the divider
chain is normally XCLK divided by 2¹³, when bypassed
becomes XCLK divided by 4).
Advance Information
174
Clock Functions
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68HC(9)12D60 — Rev 4.0
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