HD64F3437TF16 Datasheet, PDF(166/752 Page) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

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HD64F3437TF16 Datasheet, PDF (166/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

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Port 8

Port 8 pins

Pin configuration in master mode,

or when STAC bit is 1

P86/SCK1/IRQ5/SCL

P85/RxD1/IRQ4/CS2

P84/TxD1/IRQ3/IOW

P83/IOR

P82/CS1

P81/GA20

P80/HA0

P86 (input/output)/IRQ5 (input)/SCK1 (input/output)/SCL (output)

P85 (input/output)/IRQ4 (input)/RxD1 (input)

P84 (input/output)/IRQ3 (input)/TxD1 (output)

P83 (input/output)

P82 (input/output)

P81 (input/output)

P80 (input/output)

Pin configuration in slave mode

When STAC bit is 0

P86 (input/output)/IRQ5 (input)/SCK1 (input/output)/SCL (input/output)

IRQ4 (input)/CS2 (input)

IRQ3 (input)/IOW (input)

IOR (input)

CS1 (input)

P81 (input/output)/GA20 (output)

HA0 (input)

Figure 7.16 Port 8 Pin Configuration

7.9.2 Register Configuration and Descriptions

Table 7.16 summarizes the port 8 registers.

Table 7.16 Port 8 Registers

Name

Abbreviation Read/Write Initial Value Address

Port 8 data direction register P8DDR

W

H'80

H'FFBD

Port 8 data register

P8DR

R/W

H'80

H'FFBF

Note: The port 8 data direction register (P8DDR) has the same address as the port B input data

register (PBPIN).

137

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