upd78f0134hgka1-9et-a Renesas Electronics Corporation., upd78f0134hgka1-9et-a Datasheet - Page 99

• Manufacturer Part Number: upd78f0134hgka1-9et-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

4.2.6 Port 5
using port mode register 5 (PM5). Use of an on-chip pull-up resistor can be specified in 1-bit units using pull-up
resistor option register 5 (PU5).
Port 5 is a 4-bit I/O port with an output latch. Port 5 can be set to the input mode or output mode in 1-bit units
RESET input sets port 5 to input mode.
Figure 4-15 shows a block diagram of port 5.
PU5:
PM5:
RD:
WR
WR
WR
WR
: Write signal
RD
PORT
Read signal
Pull-up resistor option register 5
Port mode register 5
PM
PU
PM50 to PM53
PU50 to PU53
(P50 to P53)
Output latch
PM5
PU5
Figure 4-15. Block Diagram of P50 to P53
CHAPTER 4 PORT FUNCTIONS
User’s Manual U16899EJ3V0UD
Selector
EV
DD
P-ch
P50 to P53
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