UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 188

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

5.8.4 Internal Pull-Up Resistors
necessary enables the number of parts and the mounting area to be reduced.
up resistor option register (PUO) and the port 6 mode register (PM6).
enabled .
148
P60 to P67 (P64 to P67 in the PD784021) incorporate pull-up resistors. Use of these internal resistors when pull-up is
Whether or not an internal pull-up resistor is to be used can be specified for each pin by means of the PUO6 bit of the pull-
When PUO6 is 1, the internal pull-up resistors of the pins for which input is specified by the PM6 (PM6n = 1, n = 0 to 7) are
In the PD784021, P60 to P63 do not incorporate a pull-up resistor.
Remark When STOP mode is entered, assigning 00H to PUO is effective in reducing the current consumption.
PUO
7
0
PUO6
6
PUO5
Figure 5-59 Pull-Up Resistor Option Register (PUO) Format
5
PUO4
4
PUO3
CHAPTER 5 PORT FUNCTIONS
3
PUO2
2
PUO1
1
PUO0
0
PUO6
0FF4EH
Address
0
1
Port 6 Pull-Up Registor Specification
Not used in port 6
Used in port 6
On Reset
00H
R/W
R/W