hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 240
hd64338023s
Manufacturer Part Number
hd64338023s
Description
Renesas 8-bit Single-chip Microcomputer Super Low Power Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD64338023S.pdf
(697 pages)
- Current page: 240 of 697
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Section 8 I/O Ports
Bit 4—P1
This bit selects whether pin P1
Bit 4
IRQ4
0
1
Note: For details of
Bit 3—P1
This bit selects whether pin P1
Bit 3
TMIG
0
1
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)
PMR2 is an 8-bit read/write register. It controls whether the PMOS transistor internal to P3
or off, the selection of the watchdog timer clock, the selection of TMIG noise cancellation, and
switching of the P4
Upon reset, PMR2 is initialized to H'D8.
Rev. 7.00 Mar 10, 2005 page 198 of 652
REJ09B0042-0700
Bit
Initial value
Read/Write
Trigger Input.
4
3
/
/TMIG Pin Function Switch (TMIG)
I R Q
Description
Functions as P1
Functions as
Description
Functions as P1
Functions as TMIG input pin
4
/
A D T R G
3
—
—
/
7
1
I R Q
A D T R G
0
pin functions.
Pin Function Switch (IRQ4)
I R Q
pin setting, see section 12.3.2, Start of A/D Conversion by External
4
3
—
—
4
3
6
1
4
/
I/O pin
/TMIG is used as P1
I/O pin
I R Q
/
A D T R G
4
/
A D T R G
POF1
R/W
input pin
5
0
is used as P1
—
—
4
1
3
or as TMIG.
4
—
—
or as
3
1
I R Q
WDCKS
R/W
4
/
2
0
A D T R G
NCS
R/W
.
1
0
(initial value)
(initial value)
IRQ0
5
R/W
is on
0
0
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