C.2 Port 2 Block Diagram
Figure C-2 Port 2 Block Diagram
Reset
R
P2 DR
n
WP2
Q
D
C
Reset
R
P2 DDR
n
WP2D
Q
D
C
Reset
R
P2 PCR
n
WP2P
Q
D
C
Mode 7
Mode
1 to 6
Internal data bus (upper)
Internal address bus
P2
n
RP2P
RP2
WP2P:
RP2P:
WP2D:
WP2:
RP2:
n = 0 to 7
Write to P2PCR
Read P2PCR
Write to P2DDR
Write to port 2
Read port 2
External bus
released
Hardware standby
Software
standby
Mode 7
Mode 1 to 4
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