CHAPTER 4 PORT FUNCTIONS
Preliminary User’s Manual U16846EJ1V0UD
73
Figure 4-9. Block Diagram of P16 and P17
P16/TOH1/INTP5,
P17/TI50/TO50/FLMD1
WR
PU
RD
WR
PORT
WR
PM
PU16, PU17
Alternate
function
Output latch
(P16, P17)
PM16, PM17
PU1
PM1
Alternate
function
V
DD
P-ch
Selector
Internal bus
PU1:
Pull-up resistor option register 1
PM1:
Port mode register 1
RD: Read
signal
WR
××
: Write
signal