CHAPTER 12 PORT FUNCTIONS
584
User’s Manual U15195EJ5V0UD
(2) Timer 3 noise elimination time selection register (NRC3)
The NRC3 register is used to set the clock source of the timer 3 input pin noise elimination time.
It can be read or written in 8-bit or 1-bit units.
Caution The noise elimination function starts operating by setting the TM3CE0 bit of the TMC30
register to 1 (enabling count operations).
7
0
NRC3
6
0
5
0
4
0
3
NRC33
2
NRC32
1
NRC31
0
NRC30
Address
FFFFF698H
After reset
00H
Bit position
Bit name
Function
Selects the TO3/INTP31 pin noise elimination clock.
NRC33
NRC32
Noise elimination clock
0 0
f
XXTM3
/256
0 1
f
XXTM3
/128
1 0
f
XXTM3
/64
1 1
f
XXTM3
/32
3, 2
NRC33,
NRC32
Remark
f
XXTM3
: Clock of TM3 selected by PRM03 register
Selects the TI3/INTP30/TCLR3 pin noise elimination clock.
NRC31
NRC30
Noise elimination clocks
0 0
f
XXTM3
/16
0 1
f
XXTM3
/8
1 0
f
XXTM3
/4
1 1
f
XXTM3
/2
1, 0
NRC31,
NRC30
Remark
f
XXTM3
: Clock of TM3 selected by PRM03 register
Содержание PD703114
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