4.4 Input Only I/O CellΒΆ

Figure 4.3 Functional Schematic of CMOS Input Only Pad, gf180mcu_fd_io__in_c

Figure 4.4 Functional Schematic of Schmitt Trigger Input Only Pad, gf180mcu_fd_io__in_s
gf180mcu_fd_io__in_c and gf180mcu_fd_io__in_s are input only pads configured in CMOS and Schmitt trigger modes respectively. Both pads are equipped with pull-up/down programmability. The logical operation of the pad is as shown below.
Input
Output
PU
PD
PAD
Y
X
X
0
0
X
X
1
1
0
1
weak 0
0
1
0
weak 1
1