HD6413003RVF RENESAS [Renesas Technology Corp], HD6413003RVF Datasheet - Page 268

• Manufacturer Part Number: HD6413003RVF
• Description: microcontroller (MCU)
• Manufacturer: RENESAS [Renesas Technology Corp]

9.4 Port 6
9.4.1 Overview
Port 6 is a 3-bit input/output port that is also used for input and output of bus control signals
(BACK, BREQ, and WAIT). Port 6 has the same set of pin functions in all operating modes.
Figure 9-7 shows the pin configuration of port 6.
Pins in port 6 can drive one TTL load and a 90-pF capacitive load. They can also drive a
darlington transistor pair.
9.4.2 Register Descriptions
Table 9-6 summarizes the registers of port 6.
Table 9-6 Port 6 Registers
Address*
H'FFC9
H'FFCB
Note: * Lower 16 bits of the address.
Name
Port 6 data direction register
Port 6 data register
Port 6
Figure 9-7 Port 6 Pin Configuration
Port 6 pins
P6 (input/output)/
P6 (input/output)/
P6 (input/output)/
2
1
0
250
Abbreviation
P6DDR
P6DR
BACK
BREQ
WAIT
(output)
(input)
(input)
R/W
W
R/W
Initial Value
H'80
H'80