hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 239

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

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