Renesas H8 Series Hardware Manual page 239

Port Pull-Up Control Register 1 (PUCR1)
Bit 7
PUCR1
Initial value 0
Read/Write R/W
PUCR1 controls whether the MOS pull-up of each of the port 1 pins P1
or off. When a PCR1 bit is cleared to 0, setting the corresponding PUCR1 bit to 1 turns on the
MOS pull-up for the corresponding pin, while clearing the bit to 0 turns off the MOS pull-up.
Note: * Pin 1 and the associated function are not implemented on the H8/38124 Group.
6
The register is both readable and writeable.
Port Mode Register 1 (PMR1)
Bit 7
IRQ3
Initial value 0
Read/Write R/W
PMR1 is an 8-bit read/write register, controlling the selection of pin functions for port 1 pins.
Bit 7—P1 / /TMIF Pin Function Switch (IRQ3)
7 3
I R Q
This bit selects whether pin P1
Bit 7
IRQ3 Description
0 Functions as P1
1 Functions as
Note: Rising or falling edge sensing can be designated for
settings, see 3. Timer Control Register F (TCRF) in section 9.4.2.
Bit 6—Reserved
This bit is reserved; it is always read as 1 and cannot be modified.
Bit 5—Reserved
This bit is reserved; it can only be written with 0.
6 5
PUCR1 —
*
7 6
0 —
R/W W
6 5
— —
1 —
— W
/ /TMIF is used as P1
7 3
I R Q
I/O pin
7
/TMIF input pin
3
I R Q
4 3
PUCR1 PUCR1
4 3
0 0
R/W R/W
4 3
IRQ4 TMIG
0 0
R/W R/W
or as /TMIF.
7 3
I R Q
, TMIF. For details on TMIF
3
I R Q
Rev. 7.00 Mar 10, 2005 page 197 of 652
Section 8 I/O Ports
2 1
— — —
— — —
W W W
, P1 *, P1 , and P1 is on
7 6 4 3
2 1
— — —
— 1 —
W — W
(initial value)
REJ09B0042-0700
0
0