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3.8.5.2 IRO Drive Strength
The IRO pad requires higher current drive than can be obtained from a single pad. For
this device, the pin associated with the CMT_IRO signal is doubled bonded to two pads.
The SOPT2[PTD7PAD] field in SIM module can be used to configure the pin associated
with the CMT_IRO signal as a higher current output port pin.
3.8.6 RTC configuration
This section summarizes how the module has been configured in the chip. For a
comprehensive description of the module itself, see the module’s dedicated chapter.
Signal multiplexing
Register
access
Peripheral
bridge
Module signals
Real-time clock
Figure 3-45. RTC configuration
Table 3-54. Reference links to related information
Topic Related module Reference
Full description RTC RTC
System memory map System memory map
Clocking Clock Distribution
Power management Power management
3.8.6.1 RTC_CLKOUT signal
When the RTC is enabled and the port control module selects the RTC_CLKOUT
function, the RTC_CLKOUT signal outputs a 1 Hz or 32 kHz output derived from RTC
oscillator as shown below.
Timers
K20 Sub-Family Reference Manual, Rev. 1.1, Dec 2012
126
Preliminary
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