upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 121

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

Symbol
Symbol
PU1
R/W
PD1
R/W
(g) Pull-up resistor option register 1 (PU1)
This is an 8-bit register used to set whether to use an on-chip pull-up resistor.
This register can be read and written in 8-bit or 1-bit units.
(h) Pull-down resistor option register 1 (PD1)
This is an 8-bit register used to set whether to use an on-chip pull-down resistor.
This register can be read and written in 8-bit or 1-bit units.
R/W
R/W
7
0
7
0
PU1n
PD1n
Figure 4-17: Pull-down Resistor Option Register 1 (PD1) Format
0
1
0
1
Figure 4-16: Pull-up Resistor Option Register 1 (PU1) Format
R/W
R/W
0
6
6
0
Not connected
Connected
Not connected
Connected
R/W
R/W
5
0
5
0
User’s Manual U16702EE3V2UD00
Connection of a pull-down resistor control (n = 0 to 2)
Connection of a pull-up resistor control (n = 0 to 2)
Chapter 4 Port Functions
R/W
R/W
4
0
4
0
R/W
R/W
3
0
3
0
PU12
PD12
R/W
R/W
2
2
PU11
PD11
R/W
R/W
1
1
PU10
PD10
R/W
R/W
0
0
FFFFFCA2H
FFFFFC42H
Address
Address
After reset
After reset
00H
00H
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