
CHAPTER 4 PORT FUNCTIONS
User鈥檚 Manual U15905EJ2V1UD
98
Figure 4-4. Block Diagram of P01 to P04
Internal
bus
WRPMC
RD
Address
INTP0 to INTP3 input
TI2 to TI5 input
WRPORT
P01/INTP0/TI2,
P02/INTP1/TI3,
P03/INTP2/TI4,
P04/INTP3/TI5
PMC0n
WRINTF
INTF0n
Selector
WRPU
PU0n
WRPM
PM0n
Output latch
(P0n)
Noise
elimination
Edge
detection
WRINTR
INTR0n
PMC0
INTF0
PU0
PM0
P0
INTR0
EVDD
P-ch
Caution
These pins do not have hysteresis characteristics in the port mode.
They have hysteresis characteristics only when an input-pin alternate function is used.
Remarks 1. P0:
Port register 0
PM0:
Port mode register 0
PMC0: Port mode control register 0
PU0:
Pull-up resistor option register 0
INTR0: External interrupt rising edge specification register 0
INTF0: External interrupt falling edge specification register 0
2. n = 1 to 4