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CHAPTER 4 I/O PORT
4.8
Port input level select register
The port input level select register is used to set the input signal to CMOS hysteresis
input, Automotive input, or to CMOS input.
I Port input level select register (PILR)
The CMOS hysteresis and Automotive input levels are set in units of ports.For P32/SIN0 and P40/SIN1,
CMOS setting is possible as well.
Table 4.8-1 shows functions of input level select register.
Table 4.8-1 Functions of port input level select register
bit
0
1
2
3
4
5
6
7
*1:Only MB90F897S
*2:P32/SIN0 and P40/SIN1 serve for CMOS input independently of IL3/IL4 when ILS0/ILS1 is
"1".When ILS0/ILS1 is "0", the input level set by IL3/IL4 is selected.
Note:
This feature is not provided for the MB90V495G.This register therefore returns "1" whenever
read.
190
7
bit
PILR:00A2
ILS1
ILS0
H
Read/Write
(R/W)
(R/W) (R/W) (R/W) (R/W) (R/W) (R/W)
Initial value
(0)
(0)
bit name
Applicable ports
Unused bits
IL1
P00 to P17
IL2
P20 to P27
P30 to P33
IL3
P35, P36*
IL4
P40 to P44
IL5
P50 to P57
2
P32/SIN0
ILS0*
2
P40/SIN1
ILS1*
6
5
4
3
2
IL5
IL4
IL3
IL2
(0)
(0)
(0)
(0)
Write: No effect on operation
-
Read: Read value undefined
0:CMOS hysteresis level
1:Automotive level
0:CMOS hysteresis level
1:Automotive level1
0:CMOS hysteresis level
1
1
1:CMOS Automotive level
, P37*
0:CMOS hysteresis level
1:Automotive level
0:CMOS hysteresis level
1:Automotive level
0:Conform to the IL3 setting.
1:CMOS level
0:Conform to the IL3 setting.
1:CMOS level
1
0
IL1
-
(-)
(0)
(-)
Function
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