Renesas SH7781 - Manual (Page 1470)

28. General Purpose I/O Ports (GPIO)
Rev.1.00 Jan. 10, 2008 Page 1440 of 1658
REJ09B0261-0100
28.2.39 Port N Pull-Up Control Register (PNPUPR)
PNPUPR is an 8-bit readable/writable register that performs the pull-up control for each of the
port N7 to N0 (PN7 to PN0) pins when the port N pins are used by peripheral modules. When the
port N pins are used by the GPIO, the setting for this register is ignored.
0 1 2 3 4 5 6 7
1 1 1 1 1 1 1 1
PN0
PUPR
PN1
PUPR
PN2
PUPR
PN3
PUPR
PN4
PUPR
PN5
PUPR
PN6
PUPR
PN7
PUPR
R/W R/W R/W R/W R/W R/W R/W R/W
Bit:
Initial value:
R/W:
Bit Bit Name
Initial
value R/W Description
7 PN7PUPR 1 R/W
6 PN6PUPR 1 R/W
5 PN5PUPR 1 R/W
4 PN4PUPR 1 R/W
3 PN3PUPR 1 R/W
2 PN2PUPR 1 R/W
1 PN1PUPR 1 R/W
Pull-up of each Port N pin can be controlled
independently.
0: PNn pull-up off
1: PNn pull-up on
0 PN0PUPR 1 R/W
Note: n = 7 to 0