HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 404

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 9 I/O Ports
9.4
9.4.1
Port 3 is a 6-bit I/O port. Port 3 pins also function as SCI I/O pins (TxD
RxD
Figure 9.3 shows the port 3 pin configuration.
9.4.2
Table 9.6 shows the port 3 register configuration.
Table 9.6
Name
Port 3 data direction register
Port 3 data register
Port 3 register
Port 3 open drain control register
Notes: 1. Lower 16 bits of the address.
Rev.6.00 Sep. 27, 2007 Page 374 of 1268
REJ09B0220-0600
1
, and SCK
2. Value of bits 5 to 0.
Port 3
Overview
Register Configuration
Port 3 Registers
1
). Port 3 pin functions are the same in all operating modes.
Figure 9.3 Port 3 Pin Functions
Port 3
P3DDR
Abbreviation
P3DR
PORT3
P3ODR
Port 3 pins
P3
P3
P3
P3
P3
P3
5
4
3
2
1
0
(I/O) / SCK
(I/O) / SCK
(I/O) / RxD
(I/O) / RxD
(I/O) / TxD
(I/O) / TxD
R/W
W
R/W
R
R/W
1
0
1
0
1
0
(output)
(output)
(input)
(input)
(I/O)
(I/O)
Initial Value *
H'00
H'00
Undefined
H'00
0
, RxD
0
, SCK
2
Address *
H'FEB2
H'FF62
H'FF52
H'FF76
0
, TxD
1
,
1