Datasheet

163
ATmega323(L)
1457E–11/01
Figure 89. Boundary-scan Cell For bidirectional Port Pin with Pull-up Function.
The Boundary-Scan logic is not included in the figures in the Data Sheet. Figure 90
shows a simple digital Port Pin as described in the section “I/O Ports” on page 134. The
Boundary-Scan details from Figure 89 replaces the dashed box in Figure 90.
DQ DQ
G
0
1
0
1
DQ DQ
G
0
1
0
1
0
1
0
1
DQ DQ
G
0
1
Port Pin (PXn)
VccEXTESTTo Next CellShiftDR
Output Control (OC)
Pullup Disable (PLD)
Output Data (OD)
Input Data (ID)
From Last Cell
UpdateDRClockDR
FF2 LD2
FF1 LD1
LD0FF0