Block Diagram Of P21 - NEC switch User Manual

WR
PU0
PU02
RD
WR
PORT
Output latch
WR
PM
PM21
Alternate
function
PU0: Pull-up resistor option register 0
PM: Port mode register
RD: Port 2 read signal
WR: Port 2 write signal
CHAPTER 4 PORT FUNCTIONS
Figure 4-5. Block Diagram of P21
(P21)
User's Manual U12978EJ3V0UD
V
DD0
P-ch
P21/SO10
63