upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 158

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

158
Symbol
Symbol
PUCM
PDCM
R/W
R/W
(d) Pull-up resistor option register CM (PUCM)
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.
(e) Pull-down resistor option register CM (PDCM)
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
PUCMn
PDCMn
Figure 4-55: Pull-down Resistor Option Register CM (PDCM) Format
Figure 4-54: Pull-up Resistor Option Register CM (PUCM) Format
0
1
0
1
R/W
R/W
6
0
6
0
Not connected
Connected
Not connected
Connected
R/W
R/W
5
0
5
0
Connection of a pull-down resistor control (n = 0 to 3)
Connection of a pull-up resistor control (n = 0 to 3)
User’s Manual U16702EE3V2UD00
Chapter 4 Port Functions
R/W
R/W
4
0
4
0
PUCM3 PUCM2 PUCM1 PUCM0 FFFFFA4CH
PDCM3 PDCM2 PDCM1 PDCM0 FFFFFA6CH
R/W
R/W
3
3
R/W
R/W
2
2
R/W
R/W
1
1
R/W
R/W
0
0
Address
Address
After reset
After reset
00H
00H