CHAPTER 4 PORT FUNCTIONS
Preliminary User’s Manual U16315EJ1V0UD
89
Figure 4-10. Block Diagram of P16 and P17
P16/TOH1/INTP5,
P17/TI50/TO50
WR
PU
RD
WR
PORT
WR
PM
PU16, PU17
Alternate
function
Output latch
(P16, P17)
PM16, PM17
Alternate
function
EV
DD
P-ch
Selector
Internal bus
PU1:
Pull-up resistor option register 1
PM:
Port mode register
RD:
Port 1 read signal
WR:
Port 1 write signal