
CHAPTER 4 PORT FUNCTIONS
User’s Manual U15905EJ2V1UD
141
Figure 4-22. Block Diagram of P911 and P914
Internal
bus
WRPMC
RD
Address
SO2, SO3 output
A11, A14 output
WRPORT
P911/A11/SO2,
P914/A14/SO3
PMC9n
WRPFC
PFC9n
Selector
Output buffer
off signal
Selector
WRPU
PU9n
WRPM
PM9n
Output latch
(P9n)
WRPF
PF9n
PMC9
PFC9
PU9
PM9
P9
PF9
EVDD
P-ch
EVDD
EVSS
P-ch
N-ch
Remarks 1. P9:
Port register 9
PM9:
Port mode register 9
PMC9: Port mode control register 9
PFC9: Port function control register 9
PF9:
Port function register 9
PU9:
Pull-up resistor option register 9
Output buffer off signal: Signal that is active in the IDLE/STOP mode or during bus hold
2. n = 11, 14