US38024-BAG1 Renesas Electronics America, US38024-BAG1 Datasheet - Page 234
![no-image](/images/manufacturer_photos/0/5/560/renesas_electronics_america_sml.jpg)
US38024-BAG1
Manufacturer Part Number
US38024-BAG1
Description
DEV EVALUATION KIT H8/38024
Manufacturer
Renesas Electronics America
Series
H8®r
Type
MCUr
Datasheet
1.US38024-BAG1.pdf
(684 pages)
Specifications of US38024-BAG1
Contents
2G (Second-generation) Evaluation Board, HEW debugger support, Cable and CD-ROM
For Use With/related Products
H8/38024
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- Current page: 234 of 684
- Download datasheet (5Mb)
Section 8 I/O Ports
Port Control Register 4 (PCR4)
PCR4 is an 8-bit register for controlling whether each of port 4 pins P4
input pin or output pin. Setting a PCR4 bit to 1 makes the corresponding pin an output pin, while
clearing the bit to 0 makes the pin an input pin. PCR4 and PDR4 settings are valid when the
corresponding pins are designated for general-purpose input/output by SCR3.
Upon reset, PCR4 is initialized to H'F8.
PCR4 is a write-only register, which is always read as all 1s.
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.
This section only deals with the bit that controls switching of the P4
functions of the other bits, see the descriptions of port 1 (WDCKS and NCS) and port 3 (POF1).
Bit 0—P4
This bit selects whether pin P4
Bit 0
IRQ
0
1
Rev. 8.00 Mar. 09, 2010 Page 212 of 658
REJ09B0042-0800
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
0
3
/IRQ
Description
Functions as P4
Functions as IRQ
0
Pin Function Switch (IRQ
3
/IRQ
⎯
⎯
⎯
⎯
7
1
7
1
0
pin functions.
3
⎯
⎯
⎯
⎯
3
6
1
6
1
0
/IRQ
input pin
input pin
0
is used as P4
POF1
R/W
⎯
⎯
5
1
5
0
0
)
⎯
⎯
⎯
⎯
3
4
1
4
1
or as IRQ
⎯
⎯
⎯
⎯
3
1
3
1
0
.
WDCKS
PCR4
3
/IRQ
R/W
W
2
0
2
2
0
to P4
0
2
pin functions. For the
0
PCR4
functions as an
NCS
R/W
W
1
0
1
0
1
(initial value)
PCR4
IRQ
R/W
W
0
0
0
0
5
is on
0
0
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