HD64F3039F18 Datasheet, PDF (181/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

7.6 Port 6
Section 7 I/O Ports
7.6.1 Overview
Port 6 is a 4-bit input/output port that is also used for input and output of bus control signals (WR,
RD, AS, and WAIT).
Figure 7.16 shows the pin configuration of port 6. In modes 1, 3 and 5, the pin functions are WR,
RD, AS, and P6₀/WAIT. In modes 6 and 7, port 6 is a generic input/output port.
Pins in port 6 can drive one TTL load and a 90-pF capacitive load. They can also drive a
Darlington transistor pair.
Port 6
Port 6 pins
P6 ₅ / WR
P6 ₄ / RD
P6 ₃ / AS
P6 ₀ / WAIT
Modes 1, 3 and 5
WR (output)
RD (output)
AS (output)
P6₀ (input/output)/WAIT (input)
Modes 6 and 7
P6 ₅ (input/output)
P6 ₄ (input/output)
P6 ₃ (input/output)
P6 ₀ (input/output)
Figure 7.16 Port 6 Pin Configuration
Rev.3.00 Mar. 26, 2007 Page 157 of 682
REJ09B0353-0300