MC-78F0712-KIT Renesas Electronics America, MC-78F0712-KIT Datasheet - Page 60

• Manufacturer Part Number: MC-78F0712-KIT
• Description: KIT REF SYSTEM 78K0 UPD78F0712
• Manufacturer: Renesas Electronics America

Specifications of MC-78F0712-KIT

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.2
4.2.1
using port mode register 0 (PM0). When the P00 to P03 pins are used as an input port, use of an on-chip pull-up
resistor can be specified by pull-up resistor option register 0 (PU0).
trigger input.
58
Control registers
Port
Pull-up resistor
Ports consist of the following hardware.
Port 0 is a 4-bit I/O port with an output latch. Port 0 can be set to the input mode or output mode in 1-bit units
This port can also be used for external interrupt request input, timer output stop external signal, and A/D converter
RESET input sets port 0 to input mode.
Figure 4-2 shows a block diagram of port 0.
Port Configuration
WR
Port 0
WR
WR
RD
PU0:
PM0: Port mode register 0
RD:
WR××: Write signal
PORT
PM
PU
Item
Read signal
Pull-up resistor option register 0
PM00 to PM03
PU00 to PU03
(P00 to P03)
Output latch
Alternate
function
PM0
PU0
Port mode register (PM0, PM1, PM5)
Port register (P0, P1, P2, P5)
Pull-up resistor option register (PU0, PU1, PU5)
Total: 15 (CMOS I/O: 11, CMOS input: 4)
Total: 11 (software control: 11)
Figure 4-2. Block Diagram of P00 to P03
CHAPTER 4 PORT FUNCTIONS
Table 4-3. Port Configuration
User’s Manual U17890EJ2V0UD
Configuration
EV
DD
P-ch
P00/INTP0/TW0TOFFP,
P01/INTP1,
P02/INTP2,
P03/INTP3/ADTRG