Renesas SH7781 - Manual (Page 1464)

28. General Purpose I/O Ports (GPIO)
Rev.1.00 Jan. 10, 2008 Page 1434 of 1658
REJ09B0261-0100
28.2.33 Port E Pull-Up Control Register (PEPUPR)
PEPUPR is an 8-bit readable/writable register that performs the pull-up control for each of the port
E3 and E0 (PE3 and PE0) pins when the pins are used by peripheral modules. When the port E
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
PE0
PUPR
— —
PE3
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 to 4 — All 1 R/W Reserved
These bits are always read as 1, and the write value
should always be 1.
3 PE3PUPR 1 R/W Pull-up of the Port E3 pin can be controlled
independently.
0: PE3 pull-up off
1: PE3 pull-up on
2 and 1 — All 1 R/W Reserved
These bits are always read as 1, and the write value
should always be 1.
0 PE0PUPR 1 R/W Pull-up of the Port E0 pin can be controlled
independently.
0: PE0 pull-up off
1: PE0 pull-up on