HD64F3048VTF8 Datasheet, PDF(315/903 Page) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip

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HD64F3048VTF8 Datasheet, PDF (315/903 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip

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Section 9 I/O Ports

Port 8

Port 8 pins

P84 / CS0

P83 / CS1 / IRQ3

P82 / CS2 / IRQ2

P81 / CS3 / IRQ1

P80 / RFSH /IRQ 0

Pin functions in modes 1 to 6

(expanded modes)

P84 (input)/ CS0 (output)

P83 (input)/ CS1 (output)/ IRQ3 (input)

P82 (input)/ CS2 (output)/ IRQ2 (input)

P81 (input)/ CS3 (output)/ IRQ1 (input)

P80 (input/output)/ RFSH (output)/ IRQ 0 (input)

Pin functions in mode 7

(single-chip mode)

P84 /(input/output)

P83/(input/output)/ IRQ3 (input)

P82/(input/output)/ IRQ2 (input)

P81/(input/output)/ IRQ1 (input)

P80/(input/output)/ IRQ0 (input)

Figure 9.8 Port 8 Pin Configuration

9.9.2 Register Descriptions

Table 9.13 summarizes the registers of port 8.

Table 9.13 Port 8 Registers

Address* Name

Abbreviation R/W

H'FFCD Port 8 data direction

P8DDR

W

register

H'FFCF

Port 8 data register

P8DR

R/W

Note: * Lower 16 bits of the address.

Initial Value

Modes 1 to 4 Modes 5 to 7

H'F0

H'E0

H'E0

H'E0

Rev. 3.00 Sep 27, 2006 page 287 of 872

REJ09B0325-0300

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