CHAPTER 4 PORT FUNCTIONS
Preliminary User’s Manual U16846EJ1V0UD
68
Figure 4-4. Block Diagram of P02 and P03
WR
PU
RD
WR
PORT
WR
PM
PU02, PU03
Output latch
(P02, P03)
PM02, PM03
PU0
PM0
V
DD
P-ch
P02, P03
Selector
Internal bus
PU0:
Pull-up resistor option register 0
PM0:
Port mode register 0
RD: Read
signal
WR
××
: Write
signal