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Chapter 30 I/O Ports
3.Port Register Settings
3.5 Port Input Level Selection
The input levels of each port can be programmed bit-wise between CMOS Hysteresis type A and B, Automotive
Hysteresis and TTL level.
CMOS Hysteresis type A: VIL=0.3 x VDD VIH=0.7 x VDD
CMOS Hysteresis type B: VIL=0.2 x VDD VIH=0.8 x VDD
Automotive Hysteresis: VIL=0.5 x VDD VIH=0.8 x VDD
TTL VIL=0.8 V VIH=2.1 V
For setup, the Port Input Level Registers (PILR, EPILR) of each port are used.
PILRx.y EPILRx.y
Port Input Level
0 (default) 0 (default) CMOS Hysteresis A
1 0 Automotive Hysteresis
0 1 TTL
1 1 CMOS Hysteresis B
Addr 7 6 5 4 3 2 1 0 initial
PILR00 0E40h PILR00.7 PILR00.6 PILR00.5 PILR00.4 PILR00.3 PILR00.2 PILR00.1 PILR00.0 0000 0000
PILR01 0E41h PILR01.7 PILR01.6 PILR01.5 PILR01.4 PILR01.3 PILR01.2 PILR01.1 PILR01.0 0000 0000
PILR02 0E42h PILR02.7 PILR02.6 PILR02.5 PILR02.4 PILR02.3 PILR02.2 PILR02.1 PILR02.0 0000 0000
PILR03 0E43h PILR03.7 PILR03.6 PILR03.5 PILR03.4 PILR03.3 PILR03.2 PILR03.1 PILR03.0 0000 0000
PILR04 0E44h PILR04.7 PILR04.6 PILR04.5 PILR04.4 PILR04.3 PILR04.2 PILR04.1 PILR04.0 0000 0000
PILR05 0E45h PILR05.7 PILR05.6 PILR05.5 PILR05.4 PILR05.3 PILR05.2 PILR05.1 PILR05.0 0000 0000
PILR06 0E46h PILR06.7 PILR06.6 PILR06.5 PILR06.4 PILR06.3 PILR06.2 PILR06.1 PILR06.0 0000 0000
PILR07 0E47h PILR07.7 PILR07.6 PILR07.5 PILR07.4 PILR07.3 PILR07.2 PILR07.1 PILR07.0 0000 0000
PILR08 0E48h PILR08.7 PILR08.6 PILR08.5 PILR08.4 PILR08.3 PILR08.2 PILR08.1 PILR08.0 0000 0000
PILR09 0E49h PILR09.7 PILR09.6 PILR09.5 PILR09.4 PILR09.3 PILR09.2 PILR09.1 PILR09.0 0000 0000
PILR10 0E4Ah PILR10.7 PILR10.6 PILR10.5 PILR10.4 PILR10.3 PILR10.2 PILR10.1 PILR10.0 0000 0000
PILR11 0E4Bh PILR11.7 PILR11.6 PILR11.5 PILR11.4 PILR11.3 PILR11.2 PILR11.1 PILR11.0 0000 0000
PILR12 0E4Ch PILR12.7 PILR12.6 PILR12.5 PILR12.4 PILR12.3 PILR12.2 PILR12.1 PILR12.0 0000 0000
PILR13 0E4Dh PILR13.7 PILR13.6 PILR13.5 PILR13.4 PILR13.3 PILR13.2 PILR13.1 PILR13.0 0000 0000
PILR14 0E4Eh PILR14.7 PILR14.6 PILR14.5 PILR14.4 PILR14.3 PILR14.2 PILR14.1 PILR14.0 0000 0000
PILR15 0E4Fh PILR15.7 PILR15.6 PILR15.5 PILR15.4 PILR15.3 PILR15.2 PILR15.1 PILR15.0 0000 0000
PILR16 0E50h PILR16.7 PILR16.6 PILR16.5 PILR16.4 PILR16.3 PILR16.2 PILR16.1 PILR16.0 0000 0000
PILR17 0E51h PILR17.7 PILR17.6 PILR17.5 PILR17.4 PILR17.3 PILR17.2 PILR17.1 PILR17.0 0000 0000
PILR18 0E52h PILR18.7 PILR18.6 PILR18.5 PILR18.4 PILR18.3 PILR18.2 PILR18.1 PILR18.0 0000 0000
PILR19 0E53h PILR19.7 PILR19.6 PILR19.5 PILR19.4 PILR19.3 PILR19.2 PILR19.1 PILR19.0 0000 0000