UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 131
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UPD784026
Manufacturer Part Number
UPD784026
Description
16/8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD784026.pdf
(759 pages)
- Current page: 131 of 759
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5.2.4 Internal Pull-Up Resistors
and the mounting area to be reduced.
up resistor option register (PUO) and the port 0 mode register (PM0). When PUO0 is 1, the internal pull-up resistors of the pins
for which input is specified by PM0 are enabled (PM0n = 1, n = 0 to 7).
Port 0 incorporates pull-up resistors. Use of these internal resistors when pull-up is necessary enables the number of parts
Whether or not an internal pull-up resistor is to be used can be specified for each pin by means of the PUO0 bit of the pull-
Remark When STOP mode is entered, assigning 00H to PUO is effective in reducing the current consumption.
PUO
7
0
PUO6
6
PUO5
Figure 5-6 Pull-Up Resistor Option Register (PUO) Format
5
PUO4
4
PUO3
CHAPTER 5 PORT FUNCTIONS
3
PUO2
2
PUO1
1
PUO0
0
PUO0
0FF4EH
Address
0
1
Port 0 Pull-Up Resistor Specification
Not used in port 0
Used in port 0
On Reset
00H
R/W
R/W
91
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