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CHAPTER 13 16-BIT I/O TIMER
Table 13.5-2 Input Capture Control Status Register Bits (Upper and Lower)
Bit name
ICPn+1/3:
Interrupt request flag
bit15/bit7
bit (Input capture
n+1/3)
ICPn/2:
Interrupt request flag
bit14/bit6
bit (Input capture n/
2)
ICEn+1/3:
Interrupt request
bit13/bit5
enable bit (Input
capture n+1/3)
ICEn/2:
Interrupt request
bit12/bit4
enable bit (Input
capture n/2)
bit11/bit10
EG[n+1]1, EG[n+1]0 /
bit3/bit2
EG31, EG30
bit9/bit8
EGn1, EGn0 / EG21,
bit1/bit0
EG20
n = 0, 4
218
• This bit is used as interrupt request flag for input capture n and m
• "1" is set to this bit upon detection of a valid edge of an external input pin.
• While the interrupt enable bit (ICEn+1/3) is set, an interrupt can be generated
upon detection of a valid edge.
• Writing "0" will clear this bit.
• Writing "1" has no effect.
• In read-modify-write (RMW) instruction, "1" is always read.
• This bit is used as interrupt request flag for input capture n and m
• "1" is set to this bit upon detection of a valid edge of an external input pin.
• While the interrupt enable bit (ICEn/2) is set, an interrupt can be generated upon
detection of a valid edge.
• Writing "0" will clear this bit.
• Writing "1" has no effect.
• In read-modify-write (RMW) instruction, "1" is always read.
• This bit is used to enable input capture interrupt request for input capture n+1/3
• While "1" is written to this bit, an input capture interrupt is generated when the
interrupt flag (ICPn+1/3) is set.
• This bit is used to enable input capture interrupt request for input capture n/2
• While "1" is written to this bit, an input capture interrupt is generated when the
interrupt flag (ICPn/2) is set.
• These bits are used to specify the valid edge polarity of an external input for
input capture n+1/3
• These bits are also used to enable input capture operation
• These bits are used to specify the valid edge polarity of an external input for
input capture n/2
• These bits are also used to enable input capture operation
Function
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