HD64F38024HV Datasheet, PDF (222/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

Section 8 I/O Ports
Bit 4—P1₄/IRQ₄/ADTRG Pin Function Switch (IRQ4)
This bit selects whether pin P1₄/IRQ₄/ADTRG is used as P1₄ or as IRQ₄/ADTRG.
Bit 4
IRQ4
Description
0
1
Note:
Functions as P14 I/O pin
(initial value)
Functions as IRQ4/ADTRG input pin
For details of ADTRG pin setting, see section 12.3.2, Start of A/D Conversion by External
Trigger Input.
Bit 3—P1₃/TMIG Pin Function Switch (TMIG)
This bit selects whether pin P1₃/TMIG is used as P1₃ or as TMIG.
Bit 3
TMIG
0
1
Description
Functions as P13 I/O pin
Functions as TMIG input pin
(initial value)
Bits 2 and 0—Reserved
These bits are reserved; they can only be written with 0.
Bit 1—Reserved
This bit is reserved; it is always read as 1 and cannot be modified.
Port Mode Register 2 (PMR2)
Bit
7
—
Initial value
1
Read/Write
—
6
5
4
—
POF1
—
1
0
1
—
R/W
—
3
2
1
— WDCKS NCS
1
0
0
—
R/W
R/W
0
IRQ0
0
R/W
PMR2 is an 8-bit read/write register. It controls whether the PMOS transistor internal to P3₅ is on
or off, the selection of the watchdog timer clock, the selection of TMIG noise cancellation, and
switching of the P4₃/IRQ₀ pin functions.
Upon reset, PMR2 is initialized to H'D8.
Rev. 8.00 Mar. 09, 2010 Page 200 of 658
REJ09B0042-0800