Panasonic F77G User Manual page 138

Chapter 3 Interrupts
Noise Filter Control Register 1 (NFCTR1)
The noise filter control register (NFCTR1) sets the noise remove function for IRQ2 to IRQ4.
7 6
NFCTR1
-
Figure 3-3-5
III - 44
External Interrupts
5 4 3
- - - -
Noise Filter Control Register 1 (NFCTR1 : x'03F8D', R/W)
2 1 0
NF4EN NF3EN NF2EN
( At reset : - - - - - 0 0 0)
NF2EN
IRQ2/ noise filter setup
Noise filter OFF
0
Noise filter ON
1
NF3EN
IRQ3/noise filter setup
Noise filter OFF
0
Noise filter ON
1
NF4EN IRQ4/noise filter setup
0
Noise filter OFF
1 Noise filter ON
* Sampling cycle is fosc only.