NOTE
The implementation of this register is chip-specific. See the
Chip Configuration details.
18.4.1.6.3 Diagram
Bits
7
6
5
4
3
2
1
0
R
W
Reset
0
0
0
0
0
0
0
0
18.4.1.6.4 Fields
Field
Function
7-0
CLK_DIV
CLK_DIV
Selected low power clock source for running the EWM counter can be prescaled as below.
• Prescaled clock frequency = low power clock source frequency / ( 1 + CLK_DIV )
18.5 Functional Description
The following sections describe functional details of the EWM module.
NOTE
When the BUS_CLK is lost, then EWM module doesn't
generate the EWM_OUT_b signal and no refresh operation is
possible
18.5.1 The EWM_OUT_b Signal
The EWM_OUT_b is a digital output signal used to gate an external circuit (application
specific) that controls critical safety functions. For example, the EWM_OUT_b could be
connected to the high voltage transistors circuits that control an AC motor in a large
appliance.
The EWM_OUT_b signal remains deasserted when the EWM is being regularly
refreshed by the CPU within the programmable refresh window, indicating that the
application code is executed as expected.
Functional Description
MWCT101xS Series Reference Manual, Rev. 3, 07/2019
426
NXP Semiconductors
Summary of Contents for MWCT101 S Series
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Page 50: ...Conventions MWCT101xS Series Reference Manual Rev 3 07 2019 50 NXP Semiconductors...
Page 70: ...Aliased bit band regions MWCT101xS Series Reference Manual Rev 3 07 2019 70 NXP Semiconductors...
Page 78: ...Pinout diagrams MWCT101xS Series Reference Manual Rev 3 07 2019 78 NXP Semiconductors...
Page 96: ...WCT101xS safety concept MWCT101xS Series Reference Manual Rev 3 07 2019 96 NXP Semiconductors...
Page 130: ...Functional description MWCT101xS Series Reference Manual Rev 3 07 2019 130 NXP Semiconductors...
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Page 430: ...Functional Description MWCT101xS Series Reference Manual Rev 3 07 2019 430 NXP Semiconductors...
Page 472: ...Application Information MWCT101xS Series Reference Manual Rev 3 07 2019 472 NXP Semiconductors...
Page 528: ...Module clocks MWCT101xS Series Reference Manual Rev 3 07 2019 528 NXP Semiconductors...
Page 634: ...SRAM configuration MWCT101xS Series Reference Manual Rev 3 07 2019 634 NXP Semiconductors...
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Page 992: ...ADC calibration scheme MWCT101xS Series Reference Manual Rev 3 07 2019 992 NXP Semiconductors...
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Page 1726: ...Debug and security MWCT101xS Series Reference Manual Rev 3 07 2019 1726 NXP Semiconductors...
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