HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 196

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

7. I/O Ports
Port 7 Data Register (P7DR)
When port 7 is read, the pin logic levels are always read. P7DR cannot be modified.
7.5
7.5.1
Port 8 is a 5-bit input/output port that is also used for CS
A/D converter ADTRG input. Figure 7.4 shows the pin configuration of port 8.
In the H8/3008, port 8 can provide CS
table 7.8 for the selection of pin functions in expanded modes.
See section 14, A/D Converter, for a description of the A/D converter's ADTRG input pin.
The IRQ
input or output. Caution is therefore required. For details see section 5.3.1, External Interrupts.
Pins in port 8 can drive one TTL load and a 90-pF capacitive load. They can also drive a
darlington transistor pair.
Pins P8
Rev.4.00 Aug. 20, 2007 Page 152 of 638
REJ09B0395-0400
Bit
Initial value
Read/Write
Note: *
2
3
to P8
Port 8
Overview
to IRQ
Determined by pins P7 to P7 .
0
have Schmitt-trigger inputs.
0
functions are selected by IER settings, regardless of whether the pin is used for
P7
⎯
R
7
*
7
P7
⎯
R
6
*
6
7
3
to CS
P7
⎯
0
R
5
*
5
0
output, IRQ
P7
⎯
R
4
*
4
3
to CS
3
to IRQ
P7
⎯
R
3
*
3
0
output, IRQ
0
input, and ADTRG input. See
P7
⎯
R
2
*
2
3
to IRQ
P7
⎯
R
1
*
1
0
input, and
P7
⎯
R
0
*
0