Figure C-11 (b) Port B Block Diagram (Pins PB
4
, PB
5
)
PB
n
WPBD:
WPB:
RPB:
n = 4 and 5
Write to PBDDR
Write to port B
Read port B
WPB
RPB
Reset
Q
D
R
C
PB DDR
n
WPBD
Reset
Q
D
R
C
PB DR
n
Internal data bus
TPC output
enable
Next data
Output trigger
Output enable
Compare
match output
TPC
ITU
846
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