HD6433713 datasheet(139/324 Pages) RENESAS

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7.8 Port 9

7.8.1 Overview

Port 9 is an 8-bit standard I/O port. Figure 7-9 shows the pin configuration.

Figure 7-9 Port 9 Pin Configuration

7.8.2 Register Configuration and Description

Table 7-23 shows the port 9 register configuration.

Table 7-23 Port 9 Registers

Name

Abbrev.

R/W

Initial Value

Address

Port mode register 2

PMR2

R/W

H'00

H'FFEC

Port control register 9

PCR9

H'00

H'FFE9

Port data register 9

PDR9

R/W

H'00

H'FFD9

Port mode register 2 (PMR2)

PMR2 is an 8-bit read/write register, controlling the selection of port 9 pin functions.

Upon reset, PMR2 is initialized to H'00.

P9 /UD

P9 /SO

P9 /SI /CS

P9 /SCK

P9 /SO

P9 /SI

P9 /SCK

P9 /PWM

Port 9

(IO/input)

(IO/output)

(IO/input/output)

(IO/IO)

(IO/output)

(IO/input)

(IO/IO)

(IO/output)

Note: IO indicates input/output.

Bit

Initial value

Read/Write

R/W

SO2

R/W

SI2

R/W

SCK2

R/W

SO1

R/W

PWM

R/W

SI1

R/W

SCK1

R/W

UP/

DOWN

128

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